A pneumatically driven fixed-point moving device

Abstract

This utility model relates to a pneumatically driven fixed-point moving device, including a frame, limit switches, a guide tube, a sliding direction switch, a left driver, a fixed-point shifter, and a right driver. The limit switches are installed on the left and right sides of the frame's top beam. The two ends of the guide tube are fixedly connected to supporting columns. The sliding direction switch is installed inside the guide tube, and its two ends are elastically connected to the supporting columns. The travel direction of the fixed-point moving device is switched via the limit switches on the left and right sides. The left driver, fixed-point shifter, and right driver are all mounted on the guide tube. A reverse thrust tube is connected to the top of both the left and right drivers. A blowpipe is connected to the top of the fixed-point shifter, and the blowpipe is placed inside the reverse thrust tube. A spring is fitted onto the reverse thrust tube, with one end connected to the reverse thrust tube and the other end connected to the blowpipe. This fixed-point moving device has emergency braking and precise positioning functions, as well as autonomous reciprocating travel capabilities, exhibiting a high degree of intelligence.

Description

Technical Field

[0001] This utility model relates to a pneumatically driven fixed-point moving device, belonging to the technical field of mobile auxiliary equipment. Background Technology

[0002] Currently, in industrial production processes, the drive mechanisms of some fixed-point reciprocating production operation devices generally adopt electric drive devices. Their working principle is that the motor serves as the power source, driving gears and chains to rotate, and the chain rotation then drives the moving device forward. The fixed-point starting and stopping operations of the moving device are controlled by matching electronic limit switches and electronic limit encoders. However, due to varying production environment conditions, some workspaces are not suitable for using electrically driven self-propelled multi-fixed-point moving devices for the following reasons:

[0003] 1. The temperature in many enclosed industrial production spaces is very high, sometimes exceeding 100 degrees Celsius, and sometimes even higher. Electrical equipment or components working in such harsh environments are prone to aging and damage.

[0004] 2. The entire set of electrical drive equipment is expensive and technically complex, which brings problems such as high investment costs for engineering construction, high maintenance and operation costs of production equipment, and complex maintenance and repair technologies for production equipment;

[0005] 3. When the motor is used as a drive source, it lacks the ability to autonomously identify and avoid strong external resistance during operation, which often results in serious consequences such as motor burnout or chain breakage, causing significant impact and losses to production.

[0006] 4. Some work spaces, such as dust blowing systems, are often equipped with air sources. Air sources themselves are a good power source. They can directly and fully utilize the air sources at the work site as a driving force, greatly improving work efficiency, while conforming to the ecological concepts of energy conservation, emission reduction, and green environmental protection.

[0007] Chinese patent ZL2019209983904 discloses "a self-propelled multi-fixed-point mobile device based on air source power". However, this device has the problem that the trolley cannot brake in time at the predetermined position due to the inertia of the trolley, which seriously affects the accuracy of the trolley's fixed-point stopping action and has an adverse effect on the quality of industrial production. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a pneumatically driven fixed-point moving device. This device utilizes a high-pressure air source as the driving force and can be directly applied to industrial scenarios with existing air sources. Furthermore, this fixed-point moving device has the advantages of emergency braking and precise positioning.

[0009] The technical solution of this utility model is as follows:

[0010] A pneumatically driven fixed-point moving device includes a frame, limit switches, guide tubes, a sliding direction switch, a left driver, a fixed-point shifter, and a right driver.

[0011] The limit switches are set on the left and right sides of the frame. The two ends of the guide tube are fixedly connected by the support columns. The sliding direction switch is set inside the guide tube and its two ends are elastically connected to the support columns respectively. The direction switching of the sliding direction switch is realized by the limit switches on the left and right sides.

[0012] The left driver, the fixed-point shifter, and the right driver are all mounted on the guide tube. The top of the left driver and the right driver are each connected to a thrust reverser. The top of the fixed-point shifter is connected to a jet pipe. Both ends of the jet pipe are placed inside the thrust reverser. A spring is fitted on the thrust reverser. One end of the spring is connected to the thrust reverser and the other end is connected to the jet pipe. The high-pressure pulsed airflow pushes the left driver or the right driver forward through the jet pipe. The left driver or the right driver drives the fixed-point shifter to move forward intermittently.

[0013] Preferably, the limit switch includes a bracket, a guide plate, a limit post A, and a limit post B; the top of the bracket is connected to the frame, one end of the limit post A and the limit post B are fixedly connected to the bracket, and the other end passes through a displacement hole opened on the guide plate, and a rotating wheel is connected to the bottom end of the guide plate.

[0014] Preferably, the sliding switch includes a left sliding cylinder, a connecting plate, and a right sliding cylinder connected in sequence; the top of both the left and right sliding cylinders are provided with directional plates, and guide pulleys are symmetrically arranged on both sides of the left and right sliding cylinders; and multiple sets of symmetrically arranged lifters are provided on one side of the connecting plate.

[0015] Preferably, the lifter is a wedge-shaped plate with a ramp-type lifting slide.

[0016] Preferably, the guide tube is provided with a limit window hole, a drive baffle hole and a locking buckle rail. The locking buckle rail is provided on the upper surface of the guide tube wall, and the drive baffle hole is symmetrically arranged on both sides of the locking buckle rail.

[0017] Preferably, two parallel guide grooves are symmetrically arranged on the inner wall of the guide tube, and the guide pulley is placed in the guide groove.

[0018] Preferably, the guide pulley includes a horizontal pulley and a vertical pulley connected together. The advantage of this design is that it ensures the stability of the guide pulley within the guide groove while reducing the sliding friction of the guide pulley.

[0019] Preferably, the inner cavity of the guide tube is provided with multiple equally spaced drive stops, each drive stop group including two drive stops symmetrically arranged left and right; the drive stop includes a fixed frame, a baffle, a spring, guide shaft A, guide shaft B, and a drive lifting shaft. The fixed frame is fixed to the inner wall of the guide tube. One end of guide shaft A and guide shaft B is connected to the fixed frame, and the other end is placed in the guide hole opened in the baffle. Guide shaft B is connected to the baffle through the spring. One end of the drive lifting shaft is fixed to the bottom of the baffle, and the other end is placed in the drive lifting slide of the lifter. The top of the baffle is located at the drive blocking window hole. The advantage of this design is that during the direction switching process of the sliding switch, the lifter can make the baffle of the drive stop rise and fall, and the top of the baffle can extend out of the drive blocking window hole to achieve the interception and positioning function of the left drive, the fixed point shifter, or the right drive.

[0020] Preferably, the left and right actuators have the same structure, including a cylindrical slider, a column, and a lifting plate. The cylindrical slider is sleeved on the outer wall of the guide tube, and the top of the cylindrical slider is connected to the reverse thrust tube through the column. The lifting plate is horizontally connected to the column. The purpose of this design is that when the right actuator reaches the rightmost end of the guide tube or the left actuator reaches the leftmost end of the guide tube, the lifting plate impacts the bottom of the near-end limit switch, lifting the limit switch upward, thereby releasing the fixed restriction of the limit switch on the sliding switch. Then, under the combined action of the springs at both ends, the sliding switch begins to slide in the opposite direction of the actuator's movement, realizing the fixed restriction of the sliding switch on the other side.

[0021] Preferably, a jet pipe distance limiter is provided on the outer wall of the end of the jet pipe, and a thrust pipe distance limiter is provided on the inner wall of the end of the thrust pipe, with the jet pipe distance limiter able to contact the thrust pipe distance limiter. The advantage of this design is that, with one end of the jet pipe located inside the thrust pipe, during the relative movement of the jet pipe and the thrust pipe in opposite directions, after the jet pipe distance limiter and the thrust pipe distance limiter approach and contact each other, they can achieve mutual dragging and traction during movement.

[0022] Preferably, the top of the blowpipe is connected to an air receiving pipe, and the bottom of the blowpipe is connected to a driving pipe.

[0023] Preferably, the fixed-point shifter includes a cylindrical slider, which is sleeved on the outer wall of the guide tube, and the top of the cylindrical slider is connected to the bottom of the drive tube.

[0024] Preferably, a pressure device is provided at the bottom of the drive tube, and a left release device and a right release device are respectively provided on both sides of the drive tube, which are positioned on both sides of the fixed-point shifter. The advantage of this design is that the airflow enters the drive tube through the air receiving pipe, driving the pressure device to move downward. The downward movement of the pressure device will cause the two outer ends of the left and right release devices to tilt upward, thereby releasing the fixed restriction on the fixed-point shifter.

[0025] Preferably, the left release device includes a left-position stop bar, a crossbeam bar, and a vertical support bar that are hinged sequentially. The bottom of the vertical support bar is fixedly connected to the cylindrical slider of the fixed-point displacement device. Both the left-position stop bar and the crossbeam bar are provided with a single-sided protrusion. The advantage of this design is that the single-sided protrusion ensures that the left-position stop bar and the crossbeam bar can only rotate in one direction during rotation.

[0026] Preferably, the pressure device includes a main rod, which is provided with a pressure circular plate, a pressure rod, a limiting baffle, and a locking buckle from top to bottom; a horizontal circular hole baffle is provided on the inner wall of the drive tube, and sliding grooves are symmetrically opened on both sides of the tube wall. The pressure rod extends out of the sliding groove and contacts the crossbeam rod. The main rod passes through the circular hole baffle, and the limiting baffle is located below the circular hole baffle. A spring is sleeved on the main rod, and the spring is located between the pressure rod and the circular hole baffle.

[0027] Preferably, the locking buckle includes a left diagonal brace, a right diagonal brace, a left cross brace, and a right cross brace; the bottom ends of the left diagonal brace and the right diagonal brace are hinged to the main rod together by a connecting shaft A, the top end of the left diagonal brace is hinged to one end of the left cross brace by a connecting shaft B, the top end of the right diagonal brace is hinged to one end of the right cross brace by a connecting shaft C, and the other ends of the left cross brace and the other ends of the right cross brace are hinged to a connecting shaft D. The connecting shaft D is placed in a sliding hole opened on the main rod and the connecting shaft D is connected to the main rod by a spring.

[0028] Technical features and beneficial effects of this utility model:

[0029] This utility model relates to a pneumatically driven fixed-point mobile device. Compared to traditional, existing pneumatically powered work systems, it features emergency braking and precise positioning. Furthermore, it enables automatic steering, eliminating the need for manual direction switching, thus achieving a comprehensive benefit of improved work efficiency, reduced labor costs, and lower operating costs. The entire operation utilizes only high-pressure pulsed airflow as its power source, replacing electricity and other power sources, making the operation safer and more reliable, and aligning with the ecological principles of energy conservation, emission reduction, and low-carbon environmental protection. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the fixed-point moving device of this utility model;

[0031] Figure 2 This is a partial structural schematic diagram of the fixed-point moving device of this utility model;

[0032] Figure 3 This is a schematic diagram of the fixed-point shifter in this utility model;

[0033] Figure 4 This is a schematic diagram of the pressure device in this utility model;

[0034] Figure 5 This is a schematic diagram of the locking buckle in this utility model;

[0035] Figure 6 This is a schematic diagram of the drive tube in this utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the left release device in this utility model;

[0037] Figure 8 This is a schematic diagram of the right release device in this utility model;

[0038] Figure 9 This is a schematic diagram of the guide tube structure in this utility model;

[0039] Figure 10 for Figure 9 Section I in the middle;

[0040] Figure 11 This is a schematic diagram of the sliding switch in this utility model;

[0041] Figure 12 This is a front view of the limit switch in this utility model;

[0042] Figure 13 This is a side view of the limit switch in this utility model;

[0043] Figure 14 This is a schematic diagram of the lifting device in this utility model;

[0044] Figure 15 This is a schematic diagram of the drive gear in this utility model;

[0045] Figure 16 for Figure 11 Sectional view II of the sliding switch;

[0046] Figure 17 This is a schematic diagram showing the cooperation between the drive gear and the lifter in this utility model;

[0047] Figure 18 This is a schematic diagram of the structure of the left driver in this utility model;

[0048] Figure 19 This is a schematic diagram of the right driver in this utility model;

[0049] Figure 20 This is a cross-sectional view of the locking buckle rail in this utility model;

[0050] In the diagram: 1-Frame, 2-Guide tube, 3-Sliding switch, 4-Left driver, 5-Fixed positioner, 6-Right driver, 7-Limit stop, 8-Limit switch, 9-Spring, 10-Support column, 11-Puff pipe, 12-Reverse thrust pipe, 13-Spring, 14-Reverse thrust pipe distance limit, 15-Puff pipe distance limit, 16-Left puff pipe, 17-Air receiving pipe, 18-Right puff pipe, 19-Drive pipe, 20-Left release device, 21- 22-Pressure device, 23-Right release device, 24-Cylindrical slider, 25-Circular hole baffle, 26-Main rod, 27-Pressure circular plate, 28-Pressure rod, 29-Limit baffle, 30-Locking buckle, 31-Spring, 32-Left cross brace, 33-Coupling B, 34-Left diagonal brace, 35-Sliding hole, 36-Coupling D, 37-Right cross brace, 38-Coupling C, 39-Right diagonal brace, 40-Coupling A, 41-Slide groove, 42-Crossbeam rod 43-Left position stop lever, 44-Upright support rod, 45-Upright support rod, 46-Crossbeam rod, 47-Right position stop lever, 48-Symbol tube, 49-Limiting window hole, 50-Locking buckle rail, 51-Drive stop window hole, 52-Guide groove, 53-Slide cylinder, 54-Directional plate, 55-Connecting plate, 56-Lifter, 57-Spring, 58-Roller, 59-Rolling shaft, 60-Limiting post A, 61-Limiting post B, 62-Displacement hole, 63-Guide plate 64-Bracket, 65-Drive lifting slide, 66-Wedge plate, 67-Baffle, 68-Fixed frame, 69-Spring, 70-Guide shaft B, 71-Guide hole, 72-Guide shaft A, 73-Drive lifting shaft, 74-Horizontal rotating wheel, 75-Vertical rotating wheel, 76-Slide rail square tube, 77-Left drive stop, 78-Right drive stop, 79-Column, 80-Lifting plate, 81-Protruding stop, 82-Left rail, 83-Right rail, 84-Guide pulley. Detailed Implementation

[0051] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto.

[0052] Example 1:

[0053] like Figure 1-2 As shown, this embodiment provides a pneumatically driven fixed-point moving device, including a frame 1, a limit switch 8, a guide tube 2, a sliding direction switch 3, a left driver 4, a fixed-point shifter 5, and a right driver 6;

[0054] The limit switches 8 are fixedly connected to the left and right sides of the top beam of frame 1. The two ends of the guide tube 2 are fixedly connected to the support column 10. The sliding switch 3 is set in the guide tube 2 and its two ends are elastically connected to the support column 10 respectively. The direction conversion of the sliding switch 3 is realized through the limit switches 8 on the left and right sides.

[0055] The left driver 4, the fixed-point shifter 5, and the right driver 6 are all mounted on the guide tube 2. The top of the left driver 4 and the right driver 6 are each connected to a reverse thrust tube 12. The top of the fixed-point shifter 5 is connected to a blow pipe 11. Both ends of the blow pipe 11 are placed inside the reverse thrust tube 12. A spring 13 is mounted on the reverse thrust tube 12. One end of the spring 13 is connected to the reverse thrust tube 12, and the other end is connected to the blow pipe 11. The high-pressure pulsed airflow pushes the left driver 4 or the right driver 6 through the blow pipe 11 to drive the fixed-point shifter 5 to move forward intermittently.

[0056] Specifically, frame 1 can be an independent steel frame structure, or it can be an existing frame structure at the work site, with the limit switches 8 on both sides installed on the frame. For example... Figure 12 , 13 As shown, the limit switch 8 includes a bracket 64, a guide plate 63, a limit post A60, and a limit post B61. The top of the bracket 64 is connected to the top beam of the frame 1. One end of the limit post A60 and the limit post B61 are fixedly connected to the bracket 64, and the other end passes through the displacement hole 62 opened on the guide plate 63. A rotating wheel 58 is connected to the bottom of the guide plate 63. The bottom of the guide plate 63 is arc-shaped, which facilitates the lifting plate 80 of the left driver 4 or the right driver 6 to lift the guide plate 63. The rotating wheel 58 at the bottom of the guide plate 63 can ensure that the guide plate 63 moves up and down smoothly without jamming.

[0057] like Figure 11 As shown, the sliding switch 3 includes a left slide cylinder 53, a connecting plate 55, and a right slide cylinder connected in sequence. A guide plate 54 is provided at the top of both the left and right slide cylinders. Guide pulleys 84 are symmetrically arranged on both sides of the left and right slide cylinders. The connecting plate 55 is a long strip plate, and multiple sets of symmetrically arranged wedge-shaped lifters 56 are provided on one side of the connecting plate 55. This embodiment shows three sets of symmetrically arranged lifters. The left and right slide cylinders are connected to the ends of the support column 10 via springs 57. The left and right slide cylinders cooperate with the limit switches 8 on the left and right sides. The limit switch on the left can lock the guide plate on the left slide cylinder, and the limit switch on the right can lock the guide plate on the right slide cylinder, thereby allowing the left and right actuators to move in one direction.

[0058] like Figure 9 As shown, the guide tube 2 is provided with a limit window 49, a drive baffle 51, and a locking latch rail 50. The locking latch rail 50 is located on the upper surface of the guide tube wall and between the left and right drive baffles 51. The directional plate 54 extends upward from the limit window 49, thereby cooperating with the limit switch 8. At the same time, the directional plate 54 has a certain horizontal movement space within the limit window 49. The limit switch 8 is located above the limit window 49 and can block the directional plate 54.

[0059] like Figure 2As shown, in this embodiment, three drive stops are provided on the inner wall of the guide tube 2. Each drive stop includes two opposing drive stops, such as... Figure 17 The left drive gear 77 and right drive gear 78 shown are each movably connected to a lifter. Figure 15 As shown, the drive gear includes a fixed frame 68, a baffle 67, a spring 69, a guide shaft A72, a guide shaft B70, and a drive lifting shaft 73. The fixed frame 68 is connected to the inner wall of the guide tube 2. One end of the guide shafts A72 and B70 is connected to the fixed frame 68, and the other end is placed in the guide hole 71 of the baffle 67. The guide shaft B70 is connected to the baffle 67 through the spring 69. One end of the drive lifting shaft 73 is fixed to the bottom of the baffle 67, and the other end is placed in the drive lifting slide 65 of the lifter 56. The drive lifting slide 65 forms a certain angle with the horizontal plane, and the top of the baffle 67 is located in the drive baffle hole 51. During the direction switching process, the lifter 56 can make the baffle 67 of the drive gear rise and fall, so that the top of the baffle rises out or falls from the drive baffle hole 51.

[0060] The top of the baffle 67 is a slope, which makes the left drive 4 and the right drive 6 pass through the baffle 67 more smoothly. When the drive shaft 73 is at the top of the drive lifting slide 65, the baffle 67 rises up and is just level with the cylindrical slider 24. When the drive shaft 73 is at the bottom of the drive lifting slide 65, the baffle 67 falls down and is just level with the upper surface of the guide tube 2.

[0061] like Figure 18 , 19 As shown, the left actuator 4 and the right actuator 6 have the same structure, both including a cylindrical slider 24, a column 79, and a lifting plate 80. The cylindrical slider 24 is sleeved on the outer wall of the guide tube 2, and the top of the cylindrical slider 24 is connected to the push tube 12 through the column 79. The lifting plate 80 is horizontally connected to the column 79. The lifting plate 80 realizes the direction change of the sliding switch (the lifting plate can lift the limit switch, thereby releasing the limit switch from restricting the directional plate), thus driving the fixed-point shifter to move left or right through the operation of the left or right actuator. In addition, the wall thickness of the cylindrical sliders of the left actuator 4, the fixed-point shifter 5, and the right actuator 6 should be less than the height of the top inclined surface of the baffle 67 of the drive stop, and the top of the cylindrical slider wall is flush with the top of the baffle. The purpose of this design is to enable the cylindrical slider wall to form a downward squeezing impact force on the baffle, so as to ensure that the cylindrical slider can smoothly pass over the baffle and continue to move forward.

[0062] like Figure 2 , 18As shown in Figure 19, a jet pipe distance limiter 15 is provided on the outer wall of the end of the jet pipe 11, and a thrust pipe distance limiter 14 is provided on the inner wall of the open end of the thrust pipe 12. The other end of the thrust pipe 12 is a closed end, and the jet pipe distance limiter 15 can contact the thrust pipe distance limiter 14. The end of the jet pipe 11 is located inside the thrust pipe 12. During the relative movement of the jet pipe 11 and the thrust pipe 12, when the jet pipe distance limiter 15 contacts the thrust pipe distance limiter 14, a dragging or blocking effect can be achieved between the two.

[0063] like Figure 3 As shown, the top of the blowpipe 11 is connected to the air receiving pipe 17, and the bottom of the blowpipe 11 is connected to the drive pipe 19. High-pressure pulsed airflow enters from the air receiving pipe 17, reaches the blowpipe 11 and the drive pipe 19, and then enters the reverse thrust pipe 12 from the blowpipe 11. The fixed-point shifter 5 includes a cylindrical slider 24, which is sleeved on the outer wall of the guide tube 2, and the top of the cylindrical slider 24 is connected to the bottom of the drive pipe 19.

[0064] like Figure 3 As shown, a pressure device 21 is provided at the bottom of the drive tube 19, and a left release device 20 and a right release device 23 are respectively provided on both sides of the drive tube 19. The left release device 20 and the right release device 23 are respectively placed on the top walls of the left and right ends of the cylindrical slider 24 of the fixed-point shifter. Airflow enters the drive tube 19 through the air receiving pipe 17, driving the pressure device 21 to descend. As the pressure device 21 descends, the two ends of the left release device 20 and the right release device 23 tilt upwards, thereby releasing their fixed state on the fixed-point shifter.

[0065] like Figure 7 As shown, the left release device 20 includes a left-position stop bar 43, a crossbeam bar 42, and a vertical support bar 44, which are hinged sequentially. The bottom of the vertical support bar 44 is fixedly connected to the cylindrical slider 24 of the fixed-point shifter. Both the left-position stop bar 43 and the crossbeam bar 42 are provided with a single-sided protrusion 81. The single-sided protrusion 81 ensures that the left-position stop bar 43 and the crossbeam bar 42 can only rotate in one direction during rotation, and the left-position stop bar 43 can be blocked and limited by the baffle 67 of the drive stop. The right release device 23 has the same structure as the left release device 20, as shown... Figure 8 As shown.

[0066] like Figure 4 , 6As shown, the pressure device 21 includes a main rod 26, from top to bottom, a pressure circular plate 27, a pressure rod 28, a limiting baffle 29, and a locking buckle 30. A horizontal circular hole baffle 25 is provided on the inner wall of the drive tube 19, and symmetrical grooves 41 are formed on both sides of the tube wall. The pressure rod 28 extends out of the groove 41 and contacts the crossbeam 42. The main rod 26 passes through the circular hole baffle 25, and the limiting baffle 29 is located below the circular hole baffle 25. A spring 22 is sleeved on the main rod 26, located between the pressure rod 28 and the circular hole baffle 25. High-pressure pulsed airflow directly impacts the pressure circular plate 27, pushing the main rod 26 downwards. The main rod 26 rises with the restoring force of the spring 22. As the pressure device 21 descends, the pressure rod 28 presses down on the inner ends of the crossbeam rod 42 and the crossbeam rod 46. At the same time, the outer ends of the crossbeam rod 42 and the crossbeam rod 46 tilt upward, causing the left stop rod 43 and the right stop rod 47 to tilt upward simultaneously, thereby releasing their fixed state on the fixed point shifter.

[0067] like Figure 5 As shown, the locking buckle 30 includes a left diagonal brace 34, a right diagonal brace 39, a left horizontal brace 32, and a right horizontal brace 37. The bottom ends of the left diagonal brace 34 and the right diagonal brace 39 are hinged to the main rod 26 via a connecting shaft A40. The top end of the left diagonal brace 34 is hinged to one end of the left horizontal brace 32 via a connecting shaft B33. The top end of the right diagonal brace 39 is hinged to one end of the right horizontal brace 37 via a connecting shaft C38. The other ends of the left horizontal brace 32 and the right horizontal brace 37 are hinged to each other via a connecting shaft D36. The connecting shaft D36 is placed in a sliding hole 35 on the main rod 26 and is connected to the main rod 26 via a spring 31. During the descent of the main rod 26, when the locking buckle 30 passes through the locking buckle clamp rail 50, the left diagonal brace 34 and the right diagonal brace 39 retract inward. After passing through the locking buckle clamp rail 50, the left diagonal brace 34 and the right diagonal brace 39 return to a horizontal state and are located below the locking buckle clamp rail 50. Figure 20 As shown.

[0068] The working principle of the technical solution in this embodiment:

[0069] (I) The autonomous movement principle of the fixed-point shifter:

[0070] Assuming the current direction of travel of the fixed-point shifter is to the right, the sliding switch is limited by the right limit switch. The lifter causes the baffle of the left drive position to be raised (extending from the drive baffle window), while the baffle of the right drive position is lowered. After the high-pressure pulse airflow enters the drive tube of the fixed-point shifter from the receiving pipe, the pressure unit inside the drive tube begins to move downward due to the impact of the high-pressure airflow. The locking buckle moves downward rapidly. When the locking buckle passes through the locking buckle clamp rail, the left and right diagonal supports of the locking buckle are subjected to the inward squeezing force of the locking buckle clamp rail, and the left and right diagonal supports begin to close inward. After the locking buckle passes through the gap between the locking buckle clamp rails, the left and right diagonal supports quickly return to the open state, and the left and right diagonal supports of the locking buckle are intercepted below the locking buckle clamp rails. During the above process of the pressure unit descending, the pressure rod of the pressure unit simultaneously presses down the crossbeam of the left / right release device, and the outer ends of the left / right position stops and crossbeams simultaneously tilt upward, releasing the stop lock state of the fixed-point shifter.

[0071] Following the above actions, the high-pressure pulsed airflow enters the left and right reverse thrust pipes corresponding to the left and right blowpipes, respectively, generating reverse thrust forces on the left and right actuators. Because the left actuator is blocked to the left by the left drive gear, its position remains temporarily stationary. The right actuator begins to glide to the right, passing the next left drive gear and continuing forward. When the right blowpipe limiter and the right reverse thrust pipe limiter collide, the right actuator's forward movement is obstructed, its kinetic energy gradually decreases to zero, and it stops moving forward. Under the spring's recoil force, the right actuator begins to glide back and is eventually stopped in front of the nearest left drive gear on its left. The right actuator remains stationary, and under the pull of the spring's recoil force, the stationary shifter is dragged to the right. Simultaneously, the stationary shifter also begins to drag the left actuator to the right.

[0072] During the aforementioned forward movement of the positioning shifter, the locking buckle at the bottom of the pressure unit slides forward synchronously. The locking buckle exits the locking buckle clamp rail, and the pressure unit quickly retracts upward due to the spring's return force. The crossbeam of the left / right release device, which was raised at its outer end, is released to a horizontal position. The positioning shifter moves to the left drive stop corresponding to its next position. The right release device freely passes through this left drive stop, and the cylindrical slider of the positioning shifter presses down on this drive stop to pass. However, the left release device is stopped here by this drive stop. Therefore, the positioning shifter can no longer continue moving forward to the right. At the same time, due to the interception of the left drive stop it just passed, the positioning shifter cannot move to the left either. Thus, the positioning shifter is securely locked at this point.

[0073] The left drive continues to move forward to the right. After passing its corresponding next left drive gear, it is blocked on its right by the left drive gear. Finally, after the spring force is exhausted and the kinetic energy is reduced to zero, it stops at this point.

[0074] At this point, the fixed-point shifter has completed a full movement to the right.

[0075] (II) Working principle of the sliding switch:

[0076] When the right actuator reaches the rightmost end of the guide tube, the lifting plate of the right actuator lifts the right limit switch. After the right limit switch disengages from the right directional plate of the sliding switch, the sliding switch is pushed by the right spring and pulled by the left spring, and slides to the left. Subsequently, all the right lifters on the sliding switch simultaneously lift their corresponding right drive positions upward and pull down the corresponding left drive positions of all the left lifters. When the left directional plate of the sliding switch passes the left limit switch, the sliding switch is locked at the left end of the guide tube by the left limit switch.

[0077] At this point, the switching action of the slider changing direction from "right" to "left" is complete.

[0078] (III) Working principle of the release mechanism locking the fixed-point shifter:

[0079] When the current direction of travel of the fixed-point shifter is to the right, the fixed-point shifter quickly moves to the left side in front of the left drive gear at a certain fixed position. The right position lever of the right release is blocked by the baffle of the left drive gear. The right position lever is lifted by force in a clockwise direction and passes through the baffle of the left drive gear. Then, the tube wall of the cylindrical slider of the fixed-point shifter impacts and squeezes the baffle to the right, causing the baffle to move down and the cylindrical slider passes through the baffle. After that, the left position lever of the left release is blocked by the baffle. Because the left position lever is restricted by its one-sided protrusion, the left position lever cannot swing up. Therefore, the left position lever is stopped by the baffle of the left drive gear.

[0080] At this point, the left stop lever and the cylindrical slider of the fixed-point shifter are positioned on either side of the baffle of the left drive gear, thus locking the position of the fixed-point shifter here and preventing it from moving further.

[0081] Example 2:

[0082] A pneumatically driven fixed-point moving device, with the structure described in Embodiment 1, differs in that: Figure 10 , 16 As shown, symmetrical guide grooves 52 are provided on the inner wall of the guide tube 2 for the guide pulley 84 to slide. The guide pulley 84 includes a horizontal rotating wheel 74 and a vertical rotating wheel 75 connected to each other. The guide pulley 84 moves in the guide groove 52, which can not only ensure the stability of the guide pulley in the guide groove, but also reduce the sliding friction of the guide pulley.

[0083] Example 3:

[0084] A method for operating a pneumatically driven fixed-point moving device as described in Embodiment 1 includes the following steps:

[0085] 1) When the travel direction of the fixed-point shifter 5 is to the right, after the high-pressure pulse airflow enters the drive pipe 19 through the air receiving pipe 17, the pressure device 21 moves downward under the push of the high-pressure airflow. The outer ends of the left release device 20 and the right release device 23 simultaneously tilt upward, the fixed-point locking state of the fixed-point shifter 5 is released, the locking buckle 30 passes through the cylindrical slider 24 and the locking buckle clamp rail 50, the left diagonal brace 34 and the right diagonal brace 39 of the locking buckle 30 spring open, and the locking buckle 30 is restricted below the locking buckle clamp rail 50, such as Figure 20 As shown;

[0086] 2) At the same time, the high-pressure airflow enters the left jet pipe 16 and the right jet pipe 18. Since the left drive 4 is limited by the left drive gear 77 at this time, it remains stationary. The right drive 6 moves to the right and passes the left drive gear 77 at the next point.

[0087] 3) The right drive unit 6 continues to move to the right. The distance stops of the left and right jet pipes contact their corresponding distance stops of the left and right reverse thrust pipes, respectively, and a pulling action is generated. Afterward, the left drive unit 4, the fixed-point shifter 5, and the right drive unit 6 form a single unit and slide synchronously to the right. When the kinetic energy of the right drive unit 6 decreases to zero, the right drive unit 6 stops moving forward. However, under the pull of the spring 13, the right drive unit 6 begins to slide back and is eventually stopped in front of the nearest left drive gear 77. Afterward, the right drive unit 6 remains stationary and continues to be pulled by the spring 13, while the fixed-point shifter 5 and the left drive unit 4 continue to move forward.

[0088] 4) During the rightward movement of the fixed-point shifter 5, the locking buckle 30 disengages from the locking buckle rail 50, and the pressure device 21 returns to its original position under the restoring force of the spring 22. The left release device 20 and the right release device 23 return to the horizontal state, and the locking state of the fixed-point shifter 5 is released. When the fixed-point shifter 5 slides to the next set of drive gears, the left release device 20 is stopped by the left drive gear 77. Therefore, the rightward movement of the fixed-point shifter is stopped. At the same time, after the cylindrical slider of the fixed-point shifter passes the left drive gear, it is prevented from moving to the left by the left drive gear, and the fixed-point shifter 5 stops at this point.

[0089] 5) The fixed-point shifter 5 stops moving forward and remains stationary at this position; the left drive 4 continues to move forward to the right. After it passes its next corresponding left drive gear, it is blocked on its right side by the left drive gear. Finally, after the spring force is exhausted and the kinetic energy is reduced to zero, it stops at this point.

[0090] 6) Steps 1)-5) are an intermittent forward movement of the fixed-point shifter 5. The fixed-point shifter 5 intermittently repeats the forward movement of steps 1)-5). Finally, the right driver 6 reaches the rightmost end of the guide tube 2.

[0091] 7) When the right drive 6 reaches the rightmost end, the lifting plate 80 of the right drive 6 lifts the right limit switch 8, and the sliding switch 3 slides to the left under the action of the spring force of the springs 9 at both ends. The left guide plate 54 passes the left limit switch 8, and the sliding switch 3 is locked by the left limit switch 8.

[0092] 8) During the reverse conversion process, the lifter 56 raises all the right drive gears 78 upwards and lowers all the left drive gears 77 simultaneously.

[0093] 9) At this point, the sliding switch 3 has completed the reverse conversion of the travel direction of the fixed point shifter 5 and the left driver 4 and right driver 6. The fixed point shifter 5 and the left driver 4 and right driver 6 begin to perform the movement action from "right" to "left". The left driver 4 replaces the "locomotive" traction action of the right driver 6, dragging the fixed point shifter 5 and the right driver 6 to move towards the predetermined target position point one by one in the left direction. After the fixed point shifter 5 intermittently repeats multiple forward movements, the left driver 4 finally reaches the leftmost end of the guide tube 2.

[0094] 10) The lifting plate 80 of the left driver 4 lifts the left limit switch 8, and the sliding switch 3 begins to slide to the right under the action of the spring force of the springs 57 at both ends. The right guide plate 54 passes over the right limit switch 8, and the position of the sliding switch 3 is locked by the right limit switch 8.

[0095] 11) Repeat steps 1)-10), the fixed-point shifter 5 and the left driver 4 and right driver 6 continuously perform intermittent sliding motions that are synchronously cyclically moving left or right.

[0096] The above description is only a specific embodiment of this utility model. The protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A pneumatic drive type point moving device characterized by comprising: Includes a frame, limit switches, guide tubes, sliding direction switch, left actuator, fixed-point shifter, and right actuator; The limit switches are set on the left and right sides of the frame. The two ends of the guide tube are fixedly connected by the support columns. The sliding direction switch is set inside the guide tube and its two ends are elastically connected to the support columns respectively. The direction switching of the sliding direction switch is realized by the limit switches on the left and right sides. The left driver, the fixed-point shifter, and the right driver are all mounted on the guide tube. The top of the left driver and the right driver are each connected to a thrust reverser. The top of the fixed-point shifter is connected to a jet pipe. Both ends of the jet pipe are placed inside the thrust reverser. A spring is fitted on the thrust reverser. One end of the spring is connected to the thrust reverser and the other end is connected to the jet pipe. The high-pressure pulsed airflow pushes the left driver or the right driver forward through the jet pipe. The left driver or the right driver drives the fixed-point shifter to move forward intermittently.

2. The air-propelled spot moving device according to claim 1, wherein The limit switch includes a bracket, a guide plate, a limit post A, and a limit post B; the top of the bracket is connected to the frame, one end of the limit post A and the limit post B are fixedly connected to the bracket, and the other end passes through the displacement hole opened on the guide plate, and a rotating wheel is connected to the bottom end of the guide plate.

3. The air-propelled spot-moving device according to claim 1, wherein The sliding switch includes a left sliding cylinder, a connecting plate, and a right sliding cylinder connected in sequence; the top of the left and right sliding cylinders are provided with directional plates, and guide pulleys are symmetrically arranged on both sides of the left and right sliding cylinders; multiple sets of symmetrically arranged lifters are provided on one side of the connecting plate.

4. The air-propelled spot moving device according to claim 3, wherein The lifter is a wedge-shaped plate with a ramp-type lifting slide.

5. The air-propelled spot moving device according to claim 1, wherein The guide tube is provided with a limit window hole, a drive baffle hole and a locking buckle rail. The locking buckle rail is provided on the upper surface of the guide tube wall, and the drive baffle hole is symmetrically arranged on both sides of the locking buckle rail.

6. The pneumatically driven fixed-point moving device as described in claim 5, characterized in that, The inner cavity of the guide tube is provided with multiple equally spaced drive stops. Each drive stop group includes two drive stops arranged symmetrically on the left and right. The drive stops include a fixed frame, a baffle, a spring, a guide shaft A, a guide shaft B, and a drive lifting shaft. The fixed frame is fixed to the inner wall of the guide tube. One end of the guide shaft A and the guide shaft B are connected to the fixed frame, and the other end is placed in the guide hole opened in the baffle. The guide shaft B is connected to the baffle through the spring. One end of the drive lifting shaft is fixed to the bottom of the baffle, and the other end is placed in the drive lifting slide of the lifter. The top of the baffle is located at the drive baffle hole.

7. The air-propelled spot moving device according to claim 1, wherein The left and right actuators have the same structure, including a cylindrical slider, a column and a lifting plate. The cylindrical slider is sleeved on the outer wall of the guide tube, and the top of the cylindrical slider is connected to the reverse thrust tube through the column. The lifting plate is horizontally connected to the column.

8. The air-propelled spot moving device according to claim 1, wherein The top of the blowpipe is connected to an air receiving pipe, and the bottom of the blowpipe is connected to a drive pipe.

9. The air-propelled spot moving device according to claim 8, wherein A pressure device is provided at the bottom of the drive tube, and a left release device and a right release device are provided on both sides of the drive tube respectively. The left release device and the right release device are located on both sides of the fixed-point shifter.

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