随着科技进步的发展螺旋输送机已经成为了在机械制造业，交通运输业等方面发

With the development of science and technology, screw conveyors have become machines that play an important role in machinery manufacturing, transportation, etc. He has important significance for improving production efficiency and conveyor automation in various industries. <br>This design is the subject that I selected during the internship and based on the experience of supplementary points in my life. I will design the various parts of the screw conveyor to ensure that the fracturing sand can be directly transferred from the sand stack to the sand through the screw conveyor Within the stack, it can effectively solve the problem of fracturing sand transportation in the current shale gas development site. <br>In order to achieve this goal, the screw conveyor designed this time should be a vertical screw conveyor to ensure the direction and goal of sand transportation. When working, start the motor, the motor drives the low-speed shaft of the reducer to rotate, and the spiral shaft rotates after one-stage deceleration. The rotating shaft with spiral blades rotates in the closed groove, so that the material loaded in the groove is gravity and Its effect on the friction of the trough does not rotate with the screw shaft, and only moves forward along the trough. This time we designed a vertical screw conveyor. In the vertical screw conveyor, the centrifugal force can move the material upward due to the frictional force generated by the groove wall. It is not suitable for conveying materials that are easily deteriorated, sticky, lumpy and bulky. It's really good that the material we choose is sand and gravel, which is suitable for the application scope of vertical screw conveyor. <br>In order to ensure the overall power and applicable performance, I will design the first-stage reducer in the transmission scheme and add a belt drive for protection. <br>The general principle is that when the friction between the object and the shell is greater than the friction between the object and the spiral surface and the component force caused by its own weight to slide down the spiral, the object will slide with the spiral surface and spiral in the opposite direction The shape of the trajectory rises, that is, the object is pushed up by the spiral of the vertical part, so as to achieve the purpose of vertically conveying the gravel. <br>On the other hand, I will adopt two vertical spiral shafts for upward sand conveying work, and a horizontal shaft for horizontal conveying function. Relevant designs will be adopted for the bracket, base, and sand bucket to comprehensively improve the overall conveying efficiency and level .

With the development of scientific and technological progress spiral conveyor has become in the machinery manufacturing industry, transportation industry and other plays an important role in the machine, he is to improve production efficiency and transport automation in various industries has an important significance.<br>This design is my internship and according to the life of the complementary experience to choose the topic, I will be the spiral conveyor parts of the relevant design, to ensure that the spiral conveyor from the outside of the sand stack directly into the sand stack, can effectively solve the current shale gas development site of the problem of fracking sand transport.<br>In order to achieve this goal, the design of the spiral conveyor should be a vertical spiral conveyor, to ensure the direction and target of sand transmission. In the work, start the motor, the motor drives the low-speed shaft of the gearbox rotation, after the first-stage deceleration to drive the spiral shaft rotation, with the spiral blade rotation shaft in the closed groove, so that the loading material in its own gravity and its friction of the groove does not rotate with the spiral shaft, only along the feedway forward. We are designing a vertical spiral conveyor this time. In a vertical spiral conveyor, the material is moved upward by centrifugal force to the friction generated by the groove wall. It is not appropriate to transport materials that are prone to deterioration, stickiness, and bulk. It is good that the conveying material we choose is sandstone, which conforms to the scope of application of vertical spiral conveyors.<br>Later, in order to ensure overall power and applicable performance, I will be the transmission plan of the first-stage gearbox design, the addition of a belt drive for protection.<br>The general principle is that when the friction between the object and the shell is greater than the friction between the object and the spiral surface and the separation force that slides along the spiral caused by self-weight, the object will slide with the spiral surface and rise along the spiral trajectory in the opposite direction, i.e. the object is pushed up by the vertical part of the spiral, thus achieving the purpose of vertical transport of sand.<br>On the other hand, I will take two vertical spiral shafts to carry out upward sand transmission work, a horizontal shaft for horizontal transport function, the bracket, base, sand bucket will take the relevant design, improve the overall transport efficiency and level.

With the development of science and technology, screw conveyor has become a machine which plays an important role in the mechanical manufacturing industry, transportation industry and other aspects. It is of great significance to improve the production efficiency and the transportation automation of various industries.<br>This design is the subject selected by me in practice and according to the relevant experience of supplementary points in my life. I will design the components of the screw conveyor to ensure that the fracturing sand can be directly transported from the outside of the sand stack to the inside of the sand stack through the screw conveyor, which can effectively solve the problem of fracturing sand transportation in the current shale gas development site.<br>In order to achieve this goal, the designed screw conveyor should be vertical screw conveyor to ensure the direction and goal of sand transportation. When working, start the motor, the motor drives the low-speed shaft of the reducer to rotate, and drives the spiral shaft to rotate after the first level of deceleration. The rotating shaft with spiral blades rotates in the closed groove, so that the material loaded into the groove will not rotate together with the spiral shaft in its own gravity and its effect on the friction force of the groove, but only move forward along the groove. Our design is vertical screw conveyor. In the vertical screw conveyor, the material can move upward by the friction force generated by the centrifugal force on the groove wall. It is not suitable to transport perishable, viscous, caking and bulky materials. It's good that we choose sand and gravel as the conveying material, which is in line with the applicable scope of vertical screw conveyor.<br>Later, in order to ensure the overall power and applicable performance, I will design the primary reducer in the transmission scheme, and add a belt drive for protection.<br>The general principle is that when the friction between the object and the shell is greater than the friction between the object and the spiral surface and the component force of sliding along the spiral caused by the self weight, the object will slide with the spiral surface and rise along the spiral track in the opposite direction, that is, the object will be pushed up by the spiral of the vertical part, so as to achieve the purpose of vertical transportation of sand and stone.<br>On the other hand, I will take two vertical spiral axes to transport sand upward, and one horizontal axis to transport sand horizontally. I will take relevant design for support, base and sand hopper, so as to comprehensively improve the overall transport efficiency and level.