A bite-type rack push transmission device

Abstract

The present invention relates to the field of mechanical transmission technology, and the present invention discloses an interlocking rack push transmission device, comprising: a housing; a flexible push rack assembly, the flexible push rack assembly is installed in the housing, the flexible push rack assembly includes two flexible toothed belts installed opposite to each other at the side ends of the carrier joint, and a channel is provided in the housing for the flexible toothed belt to travel along a U-shaped walking track; a power input assembly, the power input assembly is installed in the housing, the power input assembly is used for the flexible toothed belt to travel, and when the two flexible toothed belts are engaged, the carrier joint is pushed forward. The front sides of the two flexible toothed belts are provided with external tooth blocks for the power input assembly to engage, and the back sides of the two flexible toothed belts are detachably provided with engaging blocks for mutual engagement. The present invention provides an interlocking rack push transmission device, which has the advantages of light weight, maintenance-free, high cleanliness, low noise, high power integration, and small space.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission, in particular to an interlocking rack push transmission device. Background Art

[0002] As people's demand for automation continues to expand, reciprocating linear transmission devices are needed in many occasions, such as the seventh axis of robots, three-dimensional storage and feeding, automatic mast lifting, medical equipment scanning beds, etc. In some special application scenarios, such as nuclear magnetic resonance, aerospace and other equipment, the product must be non-magnetic to prevent interference from magnetic materials; in the fields of food, lithium batteries, medical care, etc., there are clear requirements for the cleanliness of the product. How to meet customers' requirements for materials, space dimensions, transmission methods, etc. has become a difficult problem.

[0003] At present, there are also reciprocating linear motion products with mature structures on the market, such as ball screws, traditional gear racks, chain roots, belts, hydraulic cylinders, worm gears, etc., which can achieve reciprocating motion through matching corresponding transmission mechanisms. Ball screws and gear racks have high motion accuracy, but they are generally made of metal materials and require regular maintenance. The product cannot move beyond the range of the screw or rack; chains and belts can achieve reciprocating drive by installing sprockets or pulleys, but the accuracy and stability are poor, and they also require a large installation space.

[0004] There is no mature solution on the market for a linear push product that can simultaneously meet the requirements of high precision, maintenance-free, non-magnetic, good stability, small space, low noise, high speed, and easy assembly and disassembly. Summary of the invention

[0005] In order to achieve the above object, the present invention discloses an interlocking rack push transmission device, comprising:

[0006] case;

[0007] A flexible push rack assembly is installed in the housing. The flexible push rack assembly includes two flexible toothed belts installed opposite to each other at the side ends of the carrier joint. A channel is provided in the housing for the flexible toothed belts to travel along a U-shaped travel track.

[0008] The power input assembly is installed in the shell and is used to allow the flexible toothed belt to move. When the two flexible toothed belts are engaged, the transport joint is pushed forward.

[0009] Preferably, the front sides of the two flexible toothed belts are provided with external tooth blocks for engagement with the power input assembly, and the back sides of the two flexible toothed belts are detachably provided with engaging blocks for engagement with each other.

[0010] Preferably, the power input assembly comprises:

[0011] The upper follower gear 1 and the upper follower gear 2, the driving gear and the secondary gear, the lower follower gear 1 and the lower follower gear 2 are symmetrically arranged in the shell and meshed with the outer gear block. The upper follower gear 1, the driving gear and the lower follower gear 1 are meshed with one of the flexible toothed belts, the upper follower gear 2, the secondary gear and the lower follower gear 2 are meshed with the other flexible toothed belt, the lower follower gear 1 and the lower follower gear 2 are respectively used for the walking track conversion of the two flexible toothed belts, and the driving gear and the secondary gear are connected through a pair of meshing large gears connected thereto.

[0012] Preferably, the upper follower gear 1 is installed in the housing through the upper follower shaft 1, the upper follower gear 2 is installed in the housing through the upper follower shaft 2, the driving gear is installed in the housing through the power shaft, the secondary gear is installed in the housing through the main follower shaft, the lower follower gear 1 is installed in the housing through the lower follower shaft 1, the lower follower gear 2 is installed in the housing through the lower follower shaft 2, and the shaft ends of the upper follower shaft 1, the upper follower shaft 2, the main follower shaft, the lower follower shaft 1 and the lower follower shaft 2 are all connected to the housing through screws.

[0013] Preferably, the shell is assembled from a front shell and a rear shell, two guide blocks are symmetrically installed on the inner wall of the front shell, the guide blocks are arranged close to the front side of the flexible toothed belt, the guide blocks are provided with an arc groove for accommodating a driving gear or a secondary driving gear away from the end of the flexible toothed belt, an opening for the flexible toothed belt to enter and exit is opened on the front shell, and a main guide rail for the engaged section of the flexible toothed belt to run on and a side guide rail for the unengaged section of the flexible toothed belt to run on are installed on the opening.

[0014] Preferably, one of the outer tooth blocks close to the bite block is a movable tooth, a clamping rod is installed on the movable tooth, a flexible tooth belt is passed through the clamping rod, and the bite block is detachably mounted on the clamping rod.

[0015] Preferably, a tensioning adjustment assembly connected to the side guide rail is installed on the inner wall of the rear shell body, and the tensioning adjustment assembly includes an adjustment box installed on the inner wall of the rear shell body, a flip rod is installed in the adjustment box through a rotating shaft, and a reset coil spring connected to the inner wall of the adjustment box is installed on the shaft end of the rotating shaft, the flip rod extends out of an opening away from one end of the rotating shaft and is connected to the side guide rail, and the flip rod drives the side guide rail to flip in a direction away from the main rail, thereby realizing that the unengaged section of the flexible toothed belt performs an outward-turning action synchronously with the side guide rail before entering the front shell body.

[0016] Preferably, a mounting block is fixedly installed in the adjusting box, bevel gear 1 is installed on the mounting block through rotating block 1, a driving rod is passed through the mounting block, a spiral driving groove is opened on the driving rod, a driving slider slidably connected to the driving groove is installed in the rotating block 1, bevel gear 2 and the rope winding wheel are coaxially installed on rotating shaft 2, rotating shaft 2 is installed on the inner wall of the adjusting box, bevel gear 2 and bevel gear 1 are meshed, one end of the pull rope is wound around the rope winding wheel, the other end of the pull rope passes through the mounting block and is connected to one end of the flip rod close to the rotating shaft, and an adjusting block passing through the adjusting box and the rear shell is installed on the driving rod.

[0017] Preferably, a vacuum cylinder is installed at the end of the regulating box away from the rear shell body, magnetic block one is installed at the end of the driving rod away from the regulating block, magnetic block two magnetically connected to magnetic block one is located in the vacuum cylinder, plug body one is installed on magnetic block two, the vacuum cylinder is arranged close to the flip rod at the end away from the regulating box, a limit rod is installed at the end of the vacuum cylinder away from the regulating box through a reset spring, a limit groove adapted to the limit rod is provided at the end of the flip rod close to the side guide rail, plug body two is located in the vacuum cylinder and connected to the limit rod.

[0018] Preferably, a guide cylinder is installed in the adjustment box, and the pull rope runs on the guide cylinder.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides an interlocking rack push transmission device, which is not only suitable for horizontal movement, but also for vertical lifting and lowering, and can also be used for linear reciprocating motion at other angles. Within a certain load and stroke range, it can realize unguided push motion, and can also add a guide device to improve the push accuracy, distance, load and stability;

[0021] (2) The present invention provides an interlocking rack push transmission device, which controls the speed, direction and stroke through a motor, and controls the pushing speed, direction and distance of items through the transmission of gears and toothed belts;

[0022] (3) The present invention provides an interlocking rack push transmission device, which controls the rotation accuracy through a motor, thereby controlling the position of the toothed belt extension, which can save the time of transporting items and multiple stops, and facilitate users to obtain the actual position of items;

[0023] (4) The present invention provides an interlocking rack push transmission device. The entire device is made of engineering plastics and can be used in places with high magnetic field strength without interfering with the operation of the equipment. It has the advantages of light weight, maintenance-free, high cleanliness, and low noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a back perspective view of the present invention;

[0026] Figure 2 It is a front perspective view of the present invention;

[0027] Figure 3 A three-dimensional diagram of the flexible push rack assembly of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the flexible pushing rack assembly of the present invention;

[0029] Figure 5 is a cross-sectional view of the present invention;

[0030] Figure 6 It is a schematic diagram of the installation of the driving gear and the secondary driving gear of the present invention;

[0031] Figure 7 It is a schematic diagram of the installation of the upper follower gear 1 and the upper follower gear 2 of the present invention;

[0032] Figure 8 This is a disassembled diagram of the housing of the present invention;

[0033] Fig. 9 It is a schematic diagram of the installation of the main guide rail and the side guide rail of the present invention;

[0034] Fig.10 The structure of the tension adjustment component of the present invention is schematically shown in FIG. Figure 1 (The side guide rail is in the unflipped state);

[0035] Fig.11 The structure of the tension adjustment component of the present invention is schematically shown in FIG. Figure 2 (The side rails are in flipped state);

[0036] Fig.12 The structure of the tension adjustment component of the present invention is schematically shown in FIG. Figure 3 (The side rails are in flipped state);

[0037] Fig.13 for Fig.12 Enlarged view of the number A.

[0038] In the figure: 1. Flexible toothed belt; 2. Engagement block; 3. Rotating block 1; 4. Carrying joint; 5. Front housing; 6. Rear housing; 7. Power shaft; 8. Main follower shaft; 9. Upper follower shaft 1; 10. Upper follower shaft 2; 11. Lower follower shaft 1; 12. Lower follower shaft 2; 13. Driving gear; 14. Secondary gear; 15. Upper follower gear 1; 16. Upper follower gear 2; 17. Lower follower gear 1; 18. Lower follower gear 2; 19. . Main guide; 20. Side guide; 21. Screw; 22. Adjustment box; 23. Flip rod; 24. Rotating shaft one; 25. Mounting block; 26. Bevel gear one; 27. Driving rod; 28. Bevel gear two; 29. ​​Rope winding wheel; 30. Pull rope; 31. Adjustment block; 32. Vacuum cylinder; 33. Magnetic block one; 34. Magnetic block two; 35. Reset spring; 36. Limiting rod; 37. Plug body two; 38. Guide cylinder; 39. Plug body one. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] like Figure 1 to Figure 2 As shown, the present embodiment provides an interlocking rack push transmission device, comprising:

[0043] case;

[0044] A flexible push rack assembly is installed in the housing. The flexible push rack assembly includes two flexible toothed belts 1 installed opposite to each other at the side ends of the carrier joint 4. A channel is provided in the housing for the flexible toothed belts 1 to travel along a U-shaped travel track.

[0045] The power input assembly is installed in the housing and is used to drive the flexible toothed belt 1 to move. When the two flexible toothed belts 1 are engaged, the transport joint 4 is pushed forward.

[0046] The working principle and beneficial effects of the above technical solution are:

[0047] The present invention provides an interlocking rack push transmission device, in which a power input assembly installed in a housing works to drive a flexible push rack assembly to move, a single flexible toothed belt 1 is flexible and moves along a U-shaped walking track, and when two flexible toothed belts 1 are driven and interlocked together, a rack with a certain rigidity is formed, and the rack can transmit compression and tension forces to realize the linear reciprocating motion of a transport joint 4 and an object installed on the transport joint 4. An interlocking rack push transmission device disclosed in the present invention is not only suitable for horizontal motion, but also for vertical lifting and can also be used for linear reciprocating motion at other angles. Through the power input assembly, a guideless push motion can be realized within a certain load and travel range, and a guide device can also be added to improve the push accuracy, distance, load and stability. In addition, because the two flexible toothed belts 1 are in a flexible state when not interlocked, they can be easily stored, so they occupy a small space.

[0048] The function of the transport joint 4 is to connect the two flexible toothed belts 1 with the pushed objects. The transport joint 4 is directly connected to the pushed objects, and installation and disassembly are convenient.

[0049] like Figure 3 , Figure 4 As shown, in one embodiment, the front sides of the two flexible toothed belts 1 are provided with external tooth blocks for engagement with the power input assembly, and the back sides of the two flexible toothed belts 1 are detachably provided with engagement blocks 2 for engagement with each other.

[0050] The working principle and beneficial effects of the above technical solution are:

[0051] The front of each flexible toothed belt 1 is provided with an outer tooth block for engagement with the power input assembly, and the back of each flexible toothed belt 1 is provided with a bite block 2. When the power input assembly works, with the cooperation of the outer tooth block, each flexible toothed belt 1 is driven to move along a U-shaped walking track. When the fronts of the two flexible toothed belts 1 are attached together, the bite blocks 2 bite each other to achieve interlocking, thereby making the bite sections of the two flexible toothed belts 1 form a rack with a certain rigidity. Thus, it has the advantages of high precision and good stability. In addition, a single flexible toothed belt 1 is flexible and can be easily stored, so it occupies little space.

[0052] The flexible toothed belt 1 is made of flexible material, similar to a standard synchronous belt. It is recommended to use polyurethane material first, and rubber or other flexible materials can also be used. In addition, chemical fibers such as aromatic polyamide fibers can be used inside the flexible toothed belt 1 as a toothed belt reinforcement layer, and steel wire can also be used as a reinforcement layer.

[0053] Both the bite block 2 and the carrier joint 10 can be made of engineering plastics, which have the advantages of light weight, good wear resistance, and maintenance-free.

[0054] like Figures 5 to 7As shown, in one embodiment, the power input assembly includes:

[0055] The upper follower gear 15 and the upper follower gear 2 16, the driving gear 13 and the secondary gear 14, the lower follower gear 17 and the lower follower gear 2 18 are symmetrically arranged in the housing and meshed with the outer gear block. The upper follower gear 15, the driving gear 13 and the lower follower gear 1 17 are meshed with one of the flexible toothed belts 1, the upper follower gear 2 16, the secondary gear 14 and the lower follower gear 2 18 are meshed with the other flexible toothed belt 1, the lower follower gear 17 and the lower follower gear 2 18 are respectively used for the walking trajectory conversion of the two flexible toothed belts 1, and the driving gear 13 and the secondary gear 14 are connected through a pair of meshing large gears connected thereto.

[0056] The working principle and beneficial effects of the above technical solution are:

[0057] The driving gear 13 rotates, and the secondary gear 14 is driven to rotate through a pair of meshing large gears. The driving gear 13 and the secondary gear 14 rotate in opposite directions. At this time, each flexible toothed belt 1 meshed with the driving gear 13 and the secondary gear 14 moves. When the two flexible toothed belts 1 are driven and meshed together, a rack with a certain rigidity is formed, and passes between the driving gear 13 and the secondary gear 14. The upper follower gear 1 15 and the upper follower gear 2 16 and the lower follower gear 1 17 and the lower follower gear 2 18 have the same structure, and there is no additional power input. They all passively rotate following the movement of the flexible toothed belt 1. The upper follower gear 15 and the upper follower gear 2 16 provide guidance for the flexible toothed belt 1 to ensure the stability of the extended flexible toothed belt 1, which is beneficial to increase the accuracy of the rack. In addition, the unmeshed flexible toothed belt 1 can also be conveyed to improve the stability, smoothness and accuracy of the linear motion of the flexible toothed belt 1. The lower follower gear plays a guiding role before the flexible toothed belt 1 meshes.

[0058] In one embodiment, the upper follower gear 15 is installed in the housing through the upper follower shaft 19, the upper follower gear 2 16 is installed in the housing through the upper follower shaft 2 10, the driving gear 13 is installed in the housing through the power shaft 7, the secondary driven gear 14 is installed in the housing through the main follower shaft 8, the lower follower gear 17 is installed in the housing through the lower follower shaft 11, and the lower follower gear 2 18 is installed in the housing through the lower follower shaft 2 12. The shaft ends of the upper follower shaft 19, the upper follower shaft 2 10, the main follower shaft 8, the lower follower shaft 11 and the lower follower shaft 2 12 are all connected to the housing through screws 21.

[0059] The working principle and beneficial effects of the above technical solution are:

[0060] The upper follower shaft 1 9, the upper follower shaft 2 10, the main follower shaft 8, the lower follower shaft 1 11 and the lower follower shaft 2 12 are all fixed in the housing by screws 21. The power is input from the power shaft 7, which can be connected to the motor, the reducer, the clutch and other components, and is transmitted to the driving gear 13 through the power shaft 7. The driving gear 13 and the secondary gear 14 are connected through a pair of meshing large gears. The synchronous rotation of the driving gear 13 and the secondary gear 14 completes the extension and retraction of the flexible toothed belt 1.

[0061] like Figure 8 , Fig. 9 As shown, in one embodiment, the shell is assembled by a front shell 5 and a rear shell 6, and two guide blocks are symmetrically installed on the inner wall of the front shell 5. The guide blocks are arranged close to the front side of the flexible toothed belt 1, and an arc groove for accommodating a driving gear 13 or a secondary driven gear 14 is provided at the end of the guide block away from the flexible toothed belt 1. An opening for the flexible toothed belt 1 to enter and exit is opened on the front shell 5, and a main guide rail 19 for the engaged section of the flexible toothed belt 1 to travel and a side guide rail 20 for the unengaged section of the flexible toothed belt 1 to travel are installed on the opening.

[0062] The working principle and beneficial effects of the above technical solution are:

[0063] The shell plays a good protective role. The shell is assembled in the form of a front shell 5 and a rear shell 6. First, the center pins of the 6 gears are spaced apart at a distance to ensure the relative position relationship of the gears; secondly, a guide groove is set on the movement trajectory of the flexible toothed belt 1 to prevent the flexible toothed belt 1 from falling out, limit the tooth block side movement of the flexible toothed belt 1, and play a key guiding role. Screw mounting holes are reserved on the shell for easy installation and disassembly.

[0064] The shell can be made of engineering plastics and formed by injection molding or processing. If the application does not require the use of non-magnetic materials, other metal materials can also be used. The structure can be adjusted according to the material-related production process.

[0065] In one embodiment, one of the outer tooth blocks close to the bite block 2 is a movable tooth, a clamping rod is installed on the movable tooth, a flexible tooth belt 1 is passed through the clamping rod, and the bite block 2 is detachably mounted on the clamping rod.

[0066] The working principle and beneficial effects of the above technical solution are:

[0067] The movable teeth are also made of engineering plastics, and the material and molding method are the same as those of the bite block 2. The movable teeth are provided to facilitate the disassembly and assembly of the bite block 2 on the flexible toothed belt 1.

[0068] like Figures 10 to 13As shown, in one embodiment, a tensioning adjustment assembly connected to the side guide rail 20 is installed on the inner wall of the rear shell body 6, and the tensioning adjustment assembly includes an adjustment box 22 installed on the inner wall of the rear shell body 6, and a flip rod 23 is installed in the adjustment box 22 through a rotating shaft 24, and a return coil spring connected to the inner wall of the adjustment box 22 is installed at the axial end of the rotating shaft 24. The flip rod 23 extends out of the opening away from the end of the rotating shaft 24 and is connected to the side guide rail 20. The flip rod 23 drives the side guide rail 20 to flip in a direction away from the main guide rail 19, thereby realizing that the unengaged section of the flexible toothed belt 1 is synchronously turned outward with the side guide rail 20 before entering the front shell body 5.

[0069] The working principle and beneficial effects of the above technical solution are:

[0070] The engaged section of the flexible toothed belt 1 forms a rack with a certain rigidity, while the unengaged section of the flexible toothed belt 1 is still flexible. The unengaged section of the flexible toothed belt 1 is sent into the shell from the outer end of the shell through the side guide rail 20, and is sent out in the same direction by the autonomous main rail 19 after engagement. When the flexible toothed belt 1 is sent into the shell from the side guide rail 20, the side guide rail 20 can be controlled to flip in the direction close to or away from the main rail 19 through the tensioning adjustment component. The initial state of the side guide rail 20 is arranged parallel to the main rail 19, and when the flip rod 23 drives the side guide rail 20 to flip outward in the direction away from the main rail 19, the tensioning force of the flexible toothed belt 1 can be tightened to prevent the tensioning force of the flexible toothed belt 1 from loosening after long-term use and causing guiding errors.

[0071] In one embodiment, a mounting block 25 is fixedly installed in the adjusting box 22, a bevel gear 26 is installed on the mounting block 25 through a rotating block 3, a driving rod 27 is passed through the mounting block 25, a spiral driving groove is opened on the driving rod 27, a driving slider slidably connected to the driving groove is installed in the rotating block 3, a bevel gear 28 and a rope winding wheel 29 are coaxially installed on a rotating shaft 2, and the rotating shaft 2 is installed on the inner wall of the adjusting box 22, the bevel gear 28 and the bevel gear 1 26 are meshed, one end of the pull rope 30 is wound around the rope winding wheel 29, the other end of the pull rope 30 passes through the mounting block 25 and is connected to the end of the flip rod 23 close to the rotating shaft 24, and an adjusting block 31 passing through the adjusting box 22 and the rear shell 6 is installed on the driving rod 27.

[0072] The working principle and beneficial effects of the above technical solution are:

[0073] The adjusting block 31 is pushed manually, and the adjusting block 31 drives the driving rod 27 connected thereto to move in the direction close to the rotating shaft 1 24 in the adjusting box 22. With the cooperation of the driving groove and the driving slider on the driving rod 27, the driving rod 27 drives the rotating block 1 3 to rotate on the mounting block 25. With the cooperation of the bevel gear 1 26 and the bevel gear 2 28 on the rotating block 1 3, the rope winding wheel 29 coaxially mounted on the rotating shaft 2 with the bevel gear 28 is driven to rotate. The rope winding wheel 29 winds up the pull rope 30, and the pull rope 30 pulls the flip rod 23 and the side guide rail 20 connected to the flip rod 23 to rotate around the rotating shaft 1 24. The reset coil spring is stressed. At this time, the unengaged section of the flexible toothed belt 1 sent into the shell through the side guide rail 20 is turned outward in the direction away from the main rail 19, thereby realizing the tightening of the tensioning force of the flexible toothed belt 1.

[0074] In one embodiment, a vacuum cylinder 32 is installed at the end of the regulating box 22 away from the rear shell body 6, a magnetic block 1 33 is installed at the end of the driving rod 27 away from the regulating block 31, a magnetic block 2 34 magnetically connected to the magnetic block 1 33 is located in the vacuum cylinder 32, a plug body 1 39 is installed on the magnetic block 24, the vacuum cylinder 32 is arranged close to the flip rod 23 at the end away from the regulating box 22, a limiting clamping rod 36 is installed at the end of the vacuum cylinder 32 away from the regulating box 22 through a reset spring 35, and a limiting clamping groove adapted to the limiting clamping rod 36 is opened at the end of the flip rod 23 close to the side guide rail 20, and the plug body 2 37 is located in the vacuum cylinder 32 and connected to the limiting clamping rod 36.

[0075] The working principle and beneficial effects of the above technical solution are:

[0076] When the adjusting block 31 is pushed manually and the adjusting block 31 drives the driving rod 27 connected thereto to move in the direction close to the rotating shaft 1 24 in the adjusting box 22, the magnetic block 1 33 installed on the driving rod 27 drives the magnetic block 2 34 located in the vacuum cylinder 32 and the plug 1 39 connected to the magnetic block 2 34 to move in the direction close to the plug 2 37. As the air pressure between the plug 1 39 and the plug 2 37 gradually increases, the plug 2 37 drives the limiting clamping rod 36 connected thereto to move in the contraction direction of the reset spring 35. In this way, when the flipping rod 23 drives the side guide rail 20 to turn outward in the direction away from the main guide rail 19, the limiting clamping rod 36 gradually extends out of the vacuum cylinder 32 away from the end of the adjusting box 22, and when the flipping rod 23 is located above the limiting clamping rod 36, the limiting clamping rod 36 extends into the limiting clamping groove, thereby completing the fixation of the flipping rod 23. In this way, when the side guide rail 20 drives the unengaged section of the flexible toothed belt 1 to turn outward in the direction away from the main guide rail 19, the side guide rail 20 is locked.

[0077] In one embodiment, a guide cylinder 38 is installed in the adjustment box 22 , and the pull rope 30 runs on the guide cylinder 38 .

[0078] The beneficial effects of the above technical solution are:

[0079] The guide cylinder 38 is provided to guide the pull rope 30 .

[0080] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A meshing rack push transmission device, characterized in that: include: case; A flexible push rack assembly, the flexible push rack assembly is installed in the housing, the flexible push rack assembly comprises two flexible toothed belts (1) installed opposite to each other at the side ends of the carrier joint (4), and a channel is provided in the housing for the flexible toothed belt (1) to travel along a U-shaped travel track; A power input assembly is installed in the housing and is used to drive the flexible toothed belt (1) to move. When the two flexible toothed belts (1) are engaged, the transport joint (4) is pushed forward. The power input components include: An upper follower gear 1 (15) and an upper follower gear 2 (16), a driving gear (13) and a secondary gear (14), a lower follower gear 1 (17) and a lower follower gear 2 (18) are symmetrically arranged in a housing and meshed with an external gear block. The upper follower gear 1 (15), the driving gear (13) and the lower follower gear 1 (17) mesh with one of the flexible toothed belts (1). The upper follower gear 2 (16), the secondary gear (14) and the lower follower gear 2 (18) mesh with the other of the flexible toothed belts (1). The lower follower gear 1 (17) and the lower follower gear 2 (18) are respectively used for the walking track conversion of the two flexible toothed belts (1). The driving gear (13) and the secondary gear (14) are connected to each other through a pair of meshing large gears connected thereto. The housing is composed of a front housing (5) and a rear housing (6) assembled together. Two guide blocks are symmetrically mounted on the inner wall of the front housing (5). The guide blocks are arranged close to the front side of the flexible toothed belt (1). The ends of the guide blocks away from the flexible toothed belt (1) are provided with arc grooves for accommodating a driving gear (13) or a secondary driving gear (14). The front housing (5) is provided with an opening for the flexible toothed belt (1) to enter and exit. The opening is provided with a main guide rail (19) for the meshing section of the flexible toothed belt (1) to travel and a side guide rail (20) for the non-meshing section of the flexible toothed belt (1) to travel. A tension adjustment assembly connected to the side guide rail (20) is installed on the inner wall of the rear shell (6), and the tension adjustment assembly includes an adjustment box (22) installed on the inner wall of the rear shell (6), a flip rod (23) is installed in the adjustment box (22) through a rotating shaft (24), and a return coil spring connected to the inner wall of the adjustment box (22) is installed at the shaft end of the rotating shaft (24), and the flip rod (23) extends out of the opening away from the end of the rotating shaft (24) and is connected to the side guide rail (20), and the flip rod (23) drives the side guide rail (20) to flip in a direction away from the main rail (19).

2. The interlocking rack push transmission device according to claim 1, characterized in that: External tooth blocks for engagement with a power input assembly are reserved on the front sides of the two flexible toothed belts (1), and engaging blocks (2) for engagement with each other are detachably mounted on the back sides of the two flexible toothed belts (1).

3. The interlocking rack push transmission device according to claim 1, characterized in that: The upper follower gear 1 (15) is installed in the housing through the upper follower shaft 1 (9), the upper follower gear 2 (16) is installed in the housing through the upper follower shaft 2 (10), the driving gear (13) is installed in the housing through the power shaft (7), the secondary gear (14) is installed in the housing through the main follower shaft (8), the lower follower gear 1 (17) is installed in the housing through the lower follower shaft 1 (11), the lower follower gear 2 (18) is installed in the housing through the lower follower shaft 2 (12), and the shaft ends of the upper follower shaft 1 (9), the upper follower shaft 2 (10), the main follower shaft (8), the lower follower shaft 1 (11) and the lower follower shaft 2 (12) are all connected to the housing through screws (21).

4. The interlocking rack push transmission device according to claim 2, characterized in that: One of the outer tooth blocks close to the bite block (2) is a movable tooth, on which a clamping rod is installed, through which a flexible tooth belt (1) is passed, and the bite block (2) is detachably mounted on the clamping rod.

5. The interlocking rack push transmission device according to claim 1, characterized in that: A mounting block (25) is fixedly installed in the regulating box (22), a bevel gear 1 (26) is installed on the mounting block (25) through a rotating block 1 (3), a driving rod (27) is inserted through the mounting block (25), a spiral driving groove is provided on the driving rod (27), a driving slider slidably connected to the driving groove is installed in the rotating block 1 (3), a bevel gear 2 (28) and a rope winding wheel (29) are coaxially installed on a rotating shaft 2, the rotating shaft 2 is installed on the inner wall of the regulating box (22), the bevel gear 2 (28) and the bevel gear 1 (26) are meshed, one end of a pull rope (30) is wound around the rope winding wheel (29), the other end of the pull rope (30) is inserted through the mounting block (25) and is connected to an end of the flip rod (23) close to the rotating shaft 1 (24), and an regulating block (31) is installed on the driving rod (27) which inserts the regulating box (22) and the rear housing (6).

6. The interlocking rack push transmission device according to claim 5, characterized in that: A vacuum cylinder (32) is installed at the end of the regulating box (22) away from the rear shell (6), a magnetic block 1 (33) is installed at the end of the driving rod (27) away from the regulating block (31), a magnetic block 2 (34) magnetically connected to the magnetic block 1 (33) is located in the vacuum cylinder (32), a plug body 1 (39) is installed on the magnetic block 2 (34), the end of the vacuum cylinder (32) away from the regulating box (22) is arranged close to the flip rod (23), a limit clamping rod (36) is installed at the end of the vacuum cylinder (32) away from the regulating box (22) through a return spring (35), a limit clamping groove adapted to the limit clamping rod (36) is opened at the end of the flip rod (23) close to the side guide rail (20), and the plug body 2 (37) is located in the vacuum cylinder (32) and connected to the limit clamping rod (36).

7. The interlocking rack push transmission device according to claim 5, characterized in that: A guide cylinder (38) is installed in the regulating box (22), and the pull rope (30) runs on the guide cylinder (38).

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