A high-speed drive system for rail transport equipment

Abstract

The application discloses a high-speed driving system for a track transportation device and belongs to the technical field of track transportation driving mechanisms. The high-speed driving system comprises a track and a driving system slidingly arranged on the track. The driving system comprises a driving wheel mounted on a base. A load wheel is assembled on the base and located at the top of the track. The driving wheel is located at the positions on the two sides of the track. The driving wheel is elastically connected with the base through an elastic assembly. A sleeve is arranged on the end of the elastic assembly away from the base. Cavities are arranged in the base and located at the positions on the two sides of the load wheel. When the medium in the cavity is extruded into the sleeve through a flow guide pipe, a limiting spring can be compressed, so that the driving wheel can be further attached to the side of the track, so as to guarantee the friction between the driving wheel and the side of the track.

Description

Technical Field

[0001] This invention relates to the field of rail transport drive mechanism technology, and in particular to a high-speed drive system for rail transport equipment. Background Technology

[0002] Stacker cranes are automated equipment used in automated warehouses for storing, retrieving, handling, and stacking goods. They are one of the core pieces of equipment in logistics automation systems. They typically run along tracks in the aisles of the warehouse and complete the storage and retrieval of goods on the shelves through the coordinated work of a lifting mechanism (to achieve vertical movement) and telescopic forks (to achieve horizontal picking and placing).

[0003] Traditional stacker cranes have a relatively tall body. During instantaneous start-up, shutdown, or operation, the speed and displacement at the lower and upper crossbeams are inconsistent, causing the crane to sway in the front-to-back direction. In addition, there is a gap between the horizontal guide wheels and the side of the track in traditional stacker cranes, and they are not in close contact with the side of the track at all times, which also causes the crane to sway in the left-to-right direction. The above-mentioned swaying problems have restricted the development of stacker cranes in high-speed and ultra-high body technologies.

[0004] Therefore, it is necessary to provide a high-speed drive system for rail transport equipment to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-speed drive system for rail transport equipment, in order to solve the problem mentioned in the background art that the horizontal guide wheels of traditional stacker cranes have gaps with the side of the rail and do not always maintain close contact with the side of the rail, which also causes the machine body to swing in the left and right directions.

[0006] Based on the above ideas, the present invention provides the following technical solution: a high-speed drive system for rail transport equipment, including a rail and a drive system slidably configured on the rail. The drive system includes a drive wheel mounted on a base, a load-bearing wheel mounted on the base, the load-bearing wheel being located at the top of the rail, and the drive wheel being located at both sides of the rail.

[0007] The drive wheel is elastically connected to the base via an elastic component. A sleeve is fitted onto the end of the elastic component away from the base. Cavities are arranged inside the base on both sides of the load-bearing wheel. The cavities are connected to the sleeve via a guide pipe. When the base moves along the track, the medium inside the cavity is squeezed into the sleeve through the guide pipe to compress the elastic component, and the drive wheel can be pushed and moved toward the track.

[0008] As a further embodiment of the present invention: a wheel frame is installed on the outer side of the drive wheel, and a vertical plate is provided on the top of the wheel frame. The elastic component includes a connecting shaft fixedly disposed on the side of the base. The connecting shaft passes through the vertical plate and slides with the vertical plate. A piston is slidably disposed at one end of the connecting shaft passing through the vertical plate. A limit spring is provided between the piston and the vertical plate. The piston slides in the sleeve and is sealed with the sleeve.

[0009] As a further aspect of the present invention: a sleeve is provided inside the base, both ends of the sleeve pass through the base and are rotatably engaged with the base, and the sleeve is fixedly connected to the load-bearing wheel. A collar is sleeved on the part of the sleeve located inside the cavity, and a protrusion is fixedly provided on the outer peripheral wall of the collar. A sealing plate is slidably provided inside the cavity and below the sleeve. When the sleeve drives the collar and the protrusion to rotate through the snap-fit ​​assembly, the protrusion can drive the sealing plate to move downward during the rotation to squeeze the medium in the cavity into the sleeve.

[0010] As a further aspect of the present invention: the snap-fit ​​assembly includes a snap pin elastically disposed on the sleeve wall, and the inner wall of the collar is uniformly provided with a plurality of insertion holes that cooperate with the snap pin;

[0011] A pressure rod is slidably provided at the end of the sleeve. The outer peripheral wall of the pressure rod, near the position of the locking pin, is set as a conical surface. When the pressure rod moves outward along the axis of the sleeve, the locking pin can be squeezed outward relative to the sleeve through the conical surface.

[0012] As a further aspect of the present invention: a housing is fitted at one end of the sleeve through which the pressure rod passes, and an electromagnet is provided at the inner end face of the housing. The pressure rod is elastically connected to the electromagnet, and when the electromagnet is energized, it can attract the pressure rod and cause the pressure rod to move outward.

[0013] As a further aspect of the present invention: a ranging unit is mounted on both sides of the cavity via a bracket, and the ranging unit is electrically connected to the electromagnet.

[0014] As a further aspect of the present invention, a support rod is fixedly provided between the sleeve and the base.

[0015] As a further aspect of the present invention: a roller is mounted on the top of the wheel frame via a support frame, and the roller is disposed on the top of the base.

[0016] As a further aspect of the present invention: one end of the guide tube connected to the cavity is located below the sealing plate, and the other end of the guide tube connected to the sleeve is located on the side of the piston away from the base.

[0017] As a further aspect of the present invention, the housing is fixedly connected to the base by a fixing rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When the medium inside the cavity is squeezed into the sleeve through the guide pipe, the limiting spring can be compressed, allowing the drive wheel to further contact the side of the track, thus ensuring the friction between the drive wheel and the side of the track. Furthermore, the compression of gas or oil is achieved by the bearing wheel driving the sealing plate downward during rotation. Since the weight of the transport equipment is concentrated on the bearing wheel, the gas or oil below the sealing plate can be squeezed into the sleeve more easily, so that the entire device can operate more smoothly.

[0020] This invention provides power by constantly pressing the drive wheel against the side of the track, which can effectively solve the problem of left and right swaying of the stacker crane. At the same time, it can be installed and used on both the upper and lower crossbeams of the stacker crane, so that the upper and lower crossbeams of the stacker crane can operate synchronously. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 3 This is a cross-sectional view of the present invention;

[0025] Figure 4 This is the present invention. Figure 3 A magnified structural diagram at point A;

[0026] Figure 5 This is the present invention. Figure 3 A magnified structural diagram at point B;

[0027] Figure 6 This is a schematic diagram of the internal structure of the cavity in this invention;

[0028] Figure 7 This is a schematic diagram of the collar and protrusion structure of the present invention;

[0029] Figure 8 This is a top view of the present invention.

[0030] In the diagram: 1. Track; 2. Sleeve; 201. Support rod; 3. Limiting spring; 4. Drive wheel; 401. Rotating shaft; 5. Guide pipe; 6. Load-bearing wheel; 7. Base; 8. Motor; 9. Housing; 901. Electromagnet; 10. Cavity; 11. Distance measuring unit; 12. Wheel frame; 1201. Vertical plate; 13. Pressure rod; 1301. Conical surface; 14. Locking pin; 1401. Base plate; 15. Piston; 16. Connecting shaft; 17. Collar; 1701. Protrusion; 18. Magnetic ring; 19. Sleeve; 20. Insertion hole; 21. Roller; 22. Protrusion; 23. Sealing plate. Detailed Implementation

[0031] like Figures 1-8 As shown, a high-speed drive system for rail transport equipment includes an "I"-shaped track 1 and a drive system slidably mounted on the track 1. The drive system can drive transport equipment such as stacker cranes and trolleys to move along the track 1. Specifically, the drive system includes drive wheels 4. In actual use, the drive wheels 4 can be positioned at the top of the track 1. In this case, the drive wheels 4 not only transmit power but also bear weight. This requires the drive wheels 4 to have high strength and a large frictional force with the track 1 to stably drive the transport equipment along the track 1. However, in practical applications, the drive wheels 4 positioned above the track 1 are prone to slippage, especially when there is dust or oil on the top surface of the track 1. Based on this, this solution positions the power-transmitting drive wheels 4 on both sides of the track 1, while a separate load-bearing wheel 6 is installed at the top of the track 1. Figures 1-5 As shown, a base 7 is provided above the track 1. The drive wheel 4 is elastically connected to the bottom of the base 7 via an elastic component on the side of the base 7. Due to errors during the installation of the track 1 or deformation of the track 1, the track 1 is not distributed along a strictly straight line. This problem is particularly prominent when the length of the track 1 is long. The elastic component ensures that the drive wheel 4 can always be in close contact with the side of the track 1 when moving, thereby stably transmitting power. The load-bearing wheel 6 ensures that the overall weight of the transport equipment is applied to the load-bearing wheel 6. Therefore, plastic or colloid can be wrapped around the outside of the drive wheel 4 to increase the friction between it and the track 1, allowing the drive wheel 4 to better contact the track 1 and avoid slippage. In actual use, two guide pipes 5 can be set between the cavity 10 and the sleeve 2. One guide pipe 5 is equipped with a first one-way valve, which allows the medium in the cavity 10 to flow unidirectionally into the sleeve 2. The other guide pipe 5 is equipped with a second one-way valve, which allows the medium in the sleeve 2 to flow unidirectionally into the inner cavity 10. The guide pipe 5 equipped with the first one-way valve has a larger diameter and a faster flow rate, which is beneficial for stabilizing the movement of the drive piston 15.

[0032] Although the elastic component can maintain stable contact between the drive wheel 4 and the side of the track 1, the pressure exerted by the elastic component on the drive wheel 4 will decrease when the side of the track 1 is displaced or deformed away from the drive wheel 4. This problem becomes more prominent as the deformation or displacement of the track 1 increases. Based on this, this solution provides a sleeve 2 at the end of the elastic component away from the base 7. Cavities 10 are arranged inside the base 7 on both sides of the load-bearing wheel 6. The cavities 10 are fixedly connected to the base 7. The cavities 10 and the sleeve 2 are connected by a guide pipe 5. When a section of the track 1 undergoes large deformation or displacement, the transport equipment can compress the medium gas or oil in the cavity 10 into the sleeve 2 through the guide pipe 5 to compress the elastic component during the process of traveling through the base 7, thereby helping to maintain the pressure of the elastic component on the drive wheel 4.

[0033] Reference Figures 1-3 As shown, in order to elastically mount the drive wheel 4 onto the base 7, a wheel frame 12 is provided on the outer side of the drive wheel 4, so that the drive wheel 4 is rotatably mounted in the wheel frame 12. A vertical plate 1201 is welded to the top outer side of the wheel frame 12. The elastic component includes a connecting shaft 16 fixedly mounted on the side of the base 7. The connecting shaft 16 passes through the vertical plate 1201 and slides with it. A piston 15 is disposed at one end of the connecting shaft 16 passing through the vertical plate 1201. The piston 15 can slide relative to the connecting shaft 16, and there is a sealing fit between the piston 15 and the connecting shaft 16. A limit spring 3 is provided between the piston 15 and the vertical plate 1201. The piston 15 slides on the sleeve... The cylinder 2 is sealed to the sleeve 2. In actual use, the limiting spring 3 can be sleeved on the outside of the connecting shaft 16. With this structure, when the piston 15 is stationary, the pressure of the limiting spring 3 can push the vertical plate 1201 and the wheel frame 12, thereby making the drive wheel 4 close to the track 1 and contact the side of the track 1. When the medium in the cavity 10 is squeezed into the sleeve 2 through the guide pipe 5, the air pressure in the sleeve 2 will increase and push the piston 15 to move outward along the sleeve 2. During this process, the limiting spring 3 can be further compressed, so that the drive wheel 4 can make close contact with the side of the track 1.

[0034] The base 7 is provided with a sleeve 19. Specifically, both ends of the sleeve 19 pass through the base 7 and are rotatably engaged with the base 7 through bearings. The sleeve 19 passes through the center of the load-bearing wheel 6 and is fixedly connected to the load-bearing wheel 6, so that the load-bearing wheel 6 can drive the sleeve 19 to rotate when it moves along the track 1. The sleeve 19 passes through the cavity 10 and can rotate relative to the cavity 10.

[0035] Furthermore, a collar 17 is fitted onto the sleeve 19 and is located inside the cavity 10. A protrusion 1701 is fixedly provided on the outer peripheral wall of the collar 17. The protrusion 1701 is triangular in shape. A sealing plate 23 is slidably provided inside the cavity 10 and below the sleeve 19. The sealing plate 23 can slide up and down relative to the cavity 10 and is sealed to the cavity 10. When the sleeve 19 drives the collar 17 to rotate through the snap-fit ​​assembly, the pressure of the protrusion 1701 on the sealing plate 23 can cause the sealing plate 23 to move downward, thereby squeezing the medium in the cavity 10 into the sleeve 2. In actual use, oil can also be filled into the cavity 10 and the sleeve 2 to drive the piston 15 to move.

[0036] Reference Figures 3-6 As shown, the snap-fit ​​assembly includes a snap-fit ​​pin 14 disposed on the wall of the sleeve 19. The snap-fit ​​pin 14 is elastically connected to the sleeve 19 and can slide relative to the sleeve 19 along its diameter. The inner wall of the collar 17 is evenly provided with a plurality of insertion holes 20 that cooperate with the snap-fit ​​pin 14. When the snap-fit ​​pin 14 is squeezed out so that one end is inserted into the insertion hole 20, the sleeve 19 can drive the collar 17 to rotate synchronously. Since the weight of the transport equipment is concentrated on the load-bearing wheel 6, the load-bearing wheel 6 has a large inertia when walking. Therefore, during the process of the load-bearing wheel 6 driving the sleeve 19 to rotate, it can drive the sealing plate 23 to move downward along the cavity 10 and squeeze the gas or oil in the cavity 10 into the sleeve 2. The motor 8, which is connected to the drive wheel 4, has little impact on the entire process.

[0037] Combination Figures 1-5 As shown, in order to move the locking pin 14, a pressure rod 13 is provided at the end of the sleeve 19. A conical surface 1301 is provided on the outer peripheral wall of the pressure rod 13 near the locking pin 14. When the pressure rod 13 moves outward along the axis of the sleeve 19, the conical surface 1301 can squeeze the locking pin 14, thereby causing the locking pin 14 to move outward along the diameter direction of the sleeve 19, so that the end of the locking pin 14 away from the pressure rod 13 can be inserted into the insertion hole 20.

[0038] Furthermore, a housing 9 is fitted onto one end of the pressure rod 13 that protrudes from the sleeve 19. The housing 9 is fixedly connected to the base 7 via a fixing rod, and an electromagnet 901 is fixedly installed on the inner end face of the housing 9. A spring is connected between the end of the pressure rod 13 located inside the housing 9 and the electromagnet 901. When the electromagnet 901 is energized, it can attract the pressure rod 13, thereby causing the pressure rod 13 to move outward. Figures 1-2As shown, in order to detect the deformation or displacement of track 1, this scheme has a ranging unit 11 installed on both the left and right sides of the cavity 10 by means of a bracket, and the ranging unit 11 is electrically connected to the electromagnet 901 via a single-chip microcomputer. When the distance from the ranging unit 11 to the side of track 1 is greater than a threshold, the ranging unit 11 can control the electromagnet 901 to be in an energized state.

[0039] Working principle: The transport equipment is mounted on the track 1 via the base 7. The load-bearing wheels 6 support the transport equipment, and the drive wheels 4 on the side transmit power, enabling the base 7 to drive the transport equipment to move stably on the track 1. When the ranging unit 11 detects deformation or displacement of the track 1, causing the distance from the ranging unit 11 to the side of the track 1 to exceed a threshold, the ranging unit 11 controls the electromagnet 901 to be energized. This allows the electromagnet 901 to attract the pressure rod 13 and move it outwards. The conical surface 1301 on the pressure rod 13 presses against the locking pin 14. When the end of the locking pin 14 away from the pressure rod 13 is inserted into the insertion hole 20, the sleeve 19, as the load-bearing wheels 6 rotate, can also rotate the collar 17 and the protrusion 1701. When the protrusion 1701 contacts the sealing plate 23 and causes the sealing plate 23 to rotate relative to the cavity 1... When the piston moves downward, the gas or oil in the cavity 10 can be squeezed into the sleeve 2 through the guide pipe 5, so that the pressure in the sleeve 2 increases and pushes the piston 15 to move outward. During this process, the limiting spring 3 can be compressed, so that the drive wheel 4 can further fit against the side of the track 1, thereby ensuring the friction between the drive wheel 4 and the side of the track 1. In this way, the compression of gas or oil is achieved by the bearing wheel 6 driving the sealing plate 23 to move downward during rotation. Since the weight of the transport equipment is concentrated on the bearing wheel 6, the kinetic energy of the bearing wheel 6 when it moves is large (i.e., it has a large inertia), so that the gas or oil below the sealing plate 23 can be squeezed into the sleeve 2 more easily, and the motor 8 connected to the drive wheel 4 will not be affected, so that the whole device can operate more smoothly.

[0040] When the distance from the ranging unit 11 to the side of the track 1 is less than or equal to a threshold, the ranging unit 11 can control the electromagnet 901 to be de-energized, thereby allowing the pressure rod 13 to reset, and one end of the locking pin 14 can move out of the insertion hole 20. At this time, the gas or oil in the sleeve 2 can return to the cavity 10 and push the sealing plate 23 to reset. Figure 3 , Figure 5 As shown, protrusions 22 are fixedly provided on both sides of the inner wall of the cavity 10. When the sealing plate 23 moves upward and contacts the protrusions 22, the sealing plate 23 is in the reset state.

[0041] Reference Figure 3As shown, a rotating shaft 401 is fixedly installed at the center of the drive wheel 4. The rotating shaft 401 and the wheel frame 12 are rotatably connected by a bearing. Figures 1-2 As shown, the motor 8 can be installed in several ways. First, the motor 8 can be installed on the base 7, so that the output shaft of the motor 8 is connected to the rotating shaft 401 for transmission. Second, the motor 8 can be fixedly connected to the wheel frame 12. In this case, the motor 8 can be connected to the rotating shaft 401 for transmission through a gear set.

[0042] Reference Figure 1 , Figure 3 As shown, one end of the guide pipe 5 connected to the cavity 10 is located near the bottom of the cavity 10 (the end of the guide pipe 5 connected to the cavity 10 is always located below the sealing plate 23), while the end of the guide pipe 5 connected to the sleeve 2 is located on the side of the piston 15 away from the base 7, so that the gas or oil entering the sleeve 2 through the guide pipe 5 can push the piston 15 to move towards the base 7.

[0043] Reference Figure 1 As shown, a support rod 201 is fixedly installed between the sleeve 2 and the base 7 to install the sleeve 2.

[0044] The aforementioned ranging unit 11 is arranged on both sides of the drive wheel 4. When the base 7 moves along different directions on the track 1, the ranging unit 11 in the forward direction can be activated, while the ranging unit 11 on the other side is in a non-working state. The ranging unit 11 can be an infrared sensor or an ultrasonic sensor, etc.

[0045] Reference Figure 4 As shown, a base plate 1401 is fixedly installed on the outside of the locking pin 14 and near the bottom. A spring is fixedly installed between the base plate 1401 and the inner wall of the sleeve 19. When the pressure rod 13 is reset, the pressure of the spring on the base plate 1401 can drive one end of the locking pin 14 to move out of the insertion hole 20. In actual use, a ball bearing can also be installed on the end of the locking pin 14 near the pressure rod 13 so that the locking pin 14 can be stably engaged with the pressure rod 13.

[0046] Combination Figures 4-5 , Figure 7 As shown, a rotating wheel can be rotatably installed at a position of the protrusion 1701 away from the collar 17, so that the protrusion 1701 and the sealing plate 23 can be stably matched.

[0047] Reference Figure 6 As shown, a roller 21 is mounted on the top of the wheel frame 12 via a support frame. The roller 21 rotates with the support frame and is attached to the top of the base 7. This structure enables the wheel frame 12 to move more stably relative to the base 7 in the horizontal direction.

[0048] from Figure 3 , Figure 6 As can be seen, a magnetic ring 18 can be fixedly sleeved at the end of the pressure rod 13 away from the locking pin 14, and the magnetic ring 18 extends into the housing 9 and slides with it. When the electromagnet 901 is energized, the side of the electromagnet 901 opposite to the magnetic ring 18 has different magnetic poles, which can drive the pressure rod 13 to move outward.

[0049] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A high speed drive system for a track transportation vehicle, comprising a track and a drive system configured to slide on the track, the drive system comprising drive wheels mounted on a base, said base being fitted with load bearing wheels, and the load bearing wheels being located on top of the track, characterized in that: The driving wheels are located at both sides of the track; The driving wheels are elastically connected with the base through elastic components, one end of the elastic components away from the base is sleeved with a sleeve, cavities are arranged at both sides of the load wheels in the base, the cavities and the sleeve are connected through a flow guide pipe, when the base walks along the track, the medium in the cavities is extruded into the sleeve through the flow guide pipe to compress the elastic components, the driving wheels can be pushed and moved towards the track; The outer side of the driving wheels is provided with a wheel frame, and a vertical plate is arranged on the top of the wheel frame, the elastic components include a connecting shaft fixedly arranged on the side of the base, the connecting shaft penetrates through the vertical plate and is in sliding fit with the vertical plate, one end of the connecting shaft penetrating through the vertical plate is slidably provided with a piston, a limiting spring is arranged between the piston and the vertical plate, the piston slides in the sleeve and is in sealing fit with the sleeve; A sleeve is arranged in the base, both ends of the sleeve penetrate through the base and are in rotary fit with the base, the sleeve is fixedly connected with the load wheels, a sleeve ring is sleeved on the part of the sleeve inside the cavity, a protrusion is fixedly arranged on the outer side of the sleeve ring, a sealing plate is slidably arranged in the cavity below the sleeve, when the sleeve drives the sleeve ring and the protrusion to rotate through the clamping assembly, the protrusion can drive the sealing plate to move downward to extrude the medium in the cavity into the sleeve during rotation; The clamping assembly includes a clamping pin elastically arranged on the wall of the sleeve, a plurality of insertion holes matched with the clamping pin are uniformly arranged on the inner wall of the sleeve ring; A pressing rod is slidably arranged at the position of the end of the sleeve, the outer side of the pressing rod and the position close to the clamping pin are provided with a conical surface, when the pressing rod moves outward along the axis of the sleeve, the clamping pin can be extruded to move outward relative to the sleeve through the conical surface; One end of the pressing rod penetrating out of the sleeve is sleeved with a shell, an electromagnet is arranged on the inner end surface of the shell, the pressing rod is elastically connected with the electromagnet, when the electromagnet is in an electrified state, the pressing rod can be attracted and moved outward; Both sides of the cavity are provided with a distance measuring unit through a support, the distance measuring unit is electrically connected with the electromagnet.

2. A high speed drive system for a rail transport vehicle as claimed in claim 1 wherein: A support rod is fixedly arranged between the sleeve and the base.

3. A high speed drive system for a rail transport vehicle as defined in claim 1, characterized in that: A roller is arranged on the top of the base through a support frame.

4. A high speed drive system for a rail transport vehicle as defined in claim 1, wherein: One end of the flow guide pipe connected with the cavity is below the sealing plate, and one end of the flow guide pipe connected with the sleeve is on the side away from the base of the piston.

5. A high speed drive system for a rail transport vehicle as defined in claim 1, wherein: The shell is fixedly connected with the base through a fixing rod.

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