Centering and positioning device for primary-secondary shuttle vehicle

Abstract

The utility model relates to the technical field of primary and secondary shuttle vehicles, in particular to a primary and secondary shuttle vehicle centering and positioning device which comprises a primary vehicle body and a secondary vehicle body, the secondary vehicle body is movably arranged above the primary vehicle body, a walking mechanism is arranged below the secondary vehicle body, a positioning mechanism is arranged above the primary vehicle body, and the primary vehicle body and the secondary vehicle body are arranged on the primary vehicle body. Two first sliding rails are fixedly installed on the upper portion of the primary vehicle body, and a clamping groove is fixedly formed in the outer wall of the lower end of the secondary vehicle body. According to the centering and positioning device for the child-mother shuttle vehicle, through the sliding sleeve, the sliding vertical plate, the clamping sliding groove and the switching assembly, the running state of the child vehicle body located in the middle of the mother vehicle body is relieved, the child vehicle body stops when running to the middle position, stress balance of a goods shelf rail during running of the mother vehicle body is improved, and the safety of the child-mother shuttle vehicle is improved when the mother vehicle runs. The centering and positioning device for the child-mother shuttle vehicle solves the problem that the position of a child vehicle body deviates easily due to the bumping phenomenon, and the use safety of the centering and positioning device for the child-mother shuttle vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mother-and-child shuttle vehicles, in particular to a centering and positioning device for a mother-and-child shuttle vehicle. Background Art

[0002] In the field of logistics and warehousing, the mother-and-child shuttle has been widely used because it overcomes the bottleneck of two-way shuttle in storage efficiency and realizes the four-directional movement of the shuttle.

[0003] For example, the publication number "CN107662780A" is called a mother-and-child shuttle vehicle. By having two mobile vehicles, the mother and child, the workload of a single vehicle can be reduced, the service life can be extended, and the transportation of warehouse goods can be facilitated. However, the existing mother-and-child shuttle vehicles do not perform centering when the child vehicle is loaded with goods and drives to the surface of the mother vehicle, so that the position of the child vehicle is generally biased to one side relative to the mother vehicle, so that when the mother vehicle drives on the shelf track, the pressure on the tracks on both sides of the shelf is inconsistent. In the long run, it is easy to cause a height difference in the shelf track, causing safety problems. At the same time, there will be bumps when the mother vehicle is driving, which can easily cause the position of the child vehicle to shift, and then cause the above-mentioned safety problems. Utility Model Content

[0004] The utility model aims to solve the safety problem caused by the mother-and-child shuttle and proposes a centering and positioning device for the mother-and-child shuttle.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A centering and positioning device for a mother-and-child shuttle car is designed, comprising a mother car body and a child car body. The child car body is movably arranged above the mother car body, a walking mechanism is provided below the child car body, a positioning mechanism is provided above the mother car body, two slide rails are fixedly installed above the mother car body, and a positioning groove is fixedly opened on the outer wall of the lower end of the child car body.

[0007] Preferably, the walking mechanism includes a wheel axle and a mounting plate, multiple of the mounting plates are fixedly connected to the bottom end of the vehicle body, and multiple of the wheel axles are rotatably connected to the outside of the mounting plate, the lower end of the vehicle body is fixedly installed with a motor mounting seat, the outside of the motor mounting seat is fixedly connected to the motor, the output shaft end of the motor is fixedly connected to the driving shaft, the other end of the driving shaft is keyed to a sliding sleeve, the other end of the sliding sleeve is movably connected to a chimeric shaft, the outer wall of the chimeric shaft is movably sleeved with a synchronous belt, the other side of the synchronous belt is movably sleeved with the outer wall of the wheel axle, the outer side of the wheel axle is rotatably connected to a connecting plate, the other end of the connecting plate is rotatably connected to the chimeric shaft, and running wheels are rotatably connected on both sides of the wheel axle, and multiple running wheels roll on slide rail one.

[0008] Preferably, a tooth profile 1 and a guide groove are provided on the inner side of the sliding sleeve, the guide groove is fixedly opened on the inner side of the sliding sleeve, and the tooth profile 1 is fixedly opened on the front end of the sliding sleeve.

[0009] Preferably, the inner side of the engaging shaft is provided with a second tooth-shaped surface and a protruding shaft end, the second tooth-shaped surface is fixedly opened at the end of the engaging shaft, the protruding shaft end is fixedly installed at the front end of the engaging shaft, and the outer side of the protruding shaft end is movably connected to the inner side of the guide groove.

[0010] Preferably, the positioning mechanism includes a sliding vertical plate, a magnet and a positioning slide groove, the positioning slide groove is movably installed above the mother car body, the inner side of the positioning slide groove is movably connected with the sliding vertical plate, the magnet is fixedly installed at the bottom end of the sliding vertical plate, the top of the sliding vertical plate is slidably connected with slide rail 2, and slide rail 3 is fixedly installed on the top surface of the mother car body, the lower end of the positioning slide groove is slidably connected to slide rail 3, a switching component is provided on the outer side of the positioning slide groove, the bottom end of the mother car body is provided with hydraulic movable component 1, the outer wall of the bottom end of the mother car body is provided with hydraulic movable component 2, and the lower end of the mother car body is provided with a guide pipe.

[0011] Preferably, the switching assembly includes electromagnet 1 and electromagnet 2, and the electromagnet 2 is movably connected to one side of the outer wall of the locking slot. The lower end side wall of the electromagnet 2 is fixedly connected to a guide column, and the other end of the guide column is fixedly connected to the electromagnet 1. The outer side of the electromagnet 1 is movably sleeved with a return spring, and the other end of the return spring is movably connected to the other side of the outer wall of the locking slot.

[0012] Preferably, the hydraulic movable component includes a hydraulic cylinder and a connecting block, the hydraulic cylinder is fixedly installed at the bottom end of the mother vehicle body, the front end of the hydraulic cylinder is movably connected to a hydraulic rod, the connecting block is fixedly installed at the end of the hydraulic rod, and the top of the connecting block is fixedly connected to the lower end of the positioning slot.

[0013] Preferably, the hydraulic movable component 2 includes a hydraulic cylinder 2 and a locking block. The hydraulic cylinder 2 is fixedly installed in front of the lower end of the mother vehicle body. The front end of the hydraulic cylinder 2 is movably connected to a hydraulic rod 2. The front end of the hydraulic rod 2 is fixedly connected to the locking block. The inner side of the locking block is movably connected to the locking groove.

[0014] The utility model proposes a centering and positioning device for a mother-and-child shuttle vehicle, which has the beneficial effects of: through the sliding sleeve, the sliding vertical plate, the locking slide groove and the switching component, the running state of the child vehicle body in the middle position of the mother vehicle body is released, the child vehicle body is stopped when it runs to the middle position, and the force balance of the shelf rail when the mother vehicle body is running is improved. In view of the problem that there is a bumpy phenomenon when the mother vehicle is running, which easily causes the position of the child vehicle body to shift, the middle position of the child vehicle is locked through the switching component, the locking slide groove and the hydraulic movable part, preventing it from sliding and shifting due to the bumps during the movement of the mother vehicle, thereby improving the safety of the centering and positioning device for the mother-and-child shuttle vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a bottom three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a top three-dimensional schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of a combined cross section of the present utility model;

[0018] Figure 4 Schematic diagram of the three-dimensional structure of the switching component;

[0019] Figure 5 for Figure 4 An enlarged side cross-sectional view of the structure;

[0020] Figure 6 It is a schematic diagram of the side structure of the positioning mechanism;

[0021] Figure 7 is a cross-sectional schematic diagram of a hydraulic movable component 1;

[0022] Figure 8 It is a cross-sectional schematic diagram of the hydraulic movable component 2.

[0023] In the figure: 1, mother car body, 11, slide rail 1, 2, sub-car body, 21, positioning slot, 3, walking mechanism, 30, running wheel, 31, wheel axle, 32, motor, 33, motor mounting seat, 34, driving shaft, 35, sliding sleeve, 351, tooth profile 1, 352, guide groove, 36, fitting shaft, 361, tooth profile 2, 362, protruding shaft end, 37, synchronous belt, 38, connecting plate, 39, mounting plate, 4, positioning mechanism, 41, sliding Movable vertical plate, 42. Magnet, 43. Slide rail 2, 44. Positioning slide groove, 45. Slide rail 3, 46. Switching assembly, 461. Electromagnet 1, 462. Electromagnet 2, 463. Guide column, 464. Return spring, 47. Hydraulic movable assembly 1, 471. Hydraulic cylinder 1, 472. Hydraulic rod 1, 473. Connecting block, 48. Hydraulic movable assembly 2, 481. Hydraulic cylinder 2, 482. Hydraulic rod 2, 483. Positioning block, 49. Guide pipe. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Example 1:

[0026] See also Figure 1-6 : In this embodiment, a centering and positioning device for a mother-child shuttle car includes a mother car body 1 and a child car body 2. The child car body 2 is movably arranged above the mother car body 1, and the child car body 2 can slide in and out above the mother car body 1. A walking mechanism 3 is provided below the child car body 2, and a positioning mechanism 4 is provided above the mother car body 1. Two slide rails 11 are fixedly installed above the mother car body 1, and a positioning groove 21 is fixedly opened on the outer wall of the lower end of the child car body 2.

[0027] The walking mechanism 3 includes a wheel axle 31 and a mounting plate 39. Multiple mounting plates 39 are fixedly connected to the bottom end of the vehicle body 2. The mounting plate 39 is welded to the bottom end of the vehicle body 2. Multiple wheel axles 31 are rotatably connected to the outer side of the mounting plate 39. A motor mounting seat 33 is fixedly installed at the lower end of the vehicle body 2. A motor 32 is fixedly connected to the outer side of the motor mounting seat 33. The motor 32 is a servo motor. When selecting a servo motor, you can choose a motor that can meet the use requirements. The output shaft end of the motor 32 is fixedly connected to the driving shaft 34, and the other end of the driving shaft 34 is keyed to a sliding sleeve 35.

[0028] In the initial state, the return spring 464 is at its original length, the positioning slot 44 is located on the side close to the electromagnet 2 462, the sliding sleeve 35 and the engaging shaft 36 are engaged through the tooth surface 1 351 and the tooth surface 2 361, and the other end of the sliding sleeve 35 is movably connected to the engaging shaft 36, and the outer wall of the engaging shaft 36 is movably sleeved with a synchronous belt 37, and the other side of the synchronous belt 37 is movably sleeved with the outer wall of the wheel axle 31, and the outer side of the wheel axle 31 is rotatably connected to the connecting plate 38, and the inner side of the other end of the connecting plate 38 is rotatably connected to the engaging shaft 36, and the two sides of the wheel axle 31 are rotatably connected to the running wheels 30, and multiple running wheels 30 roll on the slide rail 11.

[0029] The inner side of the sliding sleeve 35 is provided with a tooth surface 1 351 and a guide groove 352. The guide groove 352 is fixedly opened on the inner side of the sliding sleeve 35, and the tooth surface 1 351 is fixedly opened at the front end of the sliding sleeve 35. When the sub-trolley body 2 is loaded with goods and returns to the mother car body 1, the motor 32 is started, driving the driving shaft 34 to rotate, driving the sliding sleeve 35 key-connected with the driving shaft 34 to rotate, and the sliding sleeve 35 drives the interlocking shaft 36 to rotate through the mutually interlocking tooth surface 1 351 and tooth surface 2 361. The interlocking shaft 36 drives the wheel shaft 31 to rotate through the synchronous belt 37 on its outer circumference. The wheel shaft 31 drives the running wheel 30 to move from the shelf track to above the slide rail 11 on the mother car body.

[0030] The inner side of the interlocking shaft 36 is provided with a second tooth surface 361 and a protruding shaft end 362. The second tooth surface 361 is fixedly opened at the end of the interlocking shaft 36, and the protruding shaft end 362 is fixedly installed at the front end of the interlocking shaft 36. The outer side of the protruding shaft end 362 is movably connected to the inner side of the guide groove 352.

[0031] The positioning mechanism 4 includes a sliding vertical plate 41, a magnet 42 and a locking slot 44. The locking slot 44 is movably installed above the mother vehicle body 1. The inner side of the locking slot 44 is movably connected with the sliding vertical plate 41. The magnet 42 is fixedly installed at the bottom end of the sliding vertical plate 41. The top end of the sliding vertical plate 41 is slidably connected with the slide rail 2 43. The top surface of the mother vehicle body 1 is fixedly installed with the slide rail 3 45. The lower end of the locking slot 44 is slidably connected to the slide rail 3 45. The outer side of the locking slot 44 is provided with a switching component 46.

[0032] When the sub-car body 2 moves to the center position of the mother car body 1, the sliding vertical plate 41 that is rotated and sleeved outside the sliding sleeve 35 moves to the middle of the locking slot 44, and the magnet 42 fixedly connected to the lower part of the sliding vertical plate 41 is facing the circular hole opening on the side of the locking slot 44. At this time, the electromagnet 1 461 is energized, and the electromagnet 1 461 generates suction force on the magnet 42, driving the sliding vertical plate 41 and the locking slot 44 to overcome the reset spring 464 and move closer to the side of the electromagnet 1 461.

[0033] Driven by the sliding vertical plate 41, the sliding sleeve 35 synchronously approaches one end of the driving shaft 34, and the tooth surface 1 351 at the other end of the sliding sleeve 35 is released from the tooth surface 2 361 on the engaging shaft 36. The protruding shaft end 362 on the engaging shaft 36 is still in the guide groove 352. At this time, the motor 32 can no longer drive the running wheel to rotate, and the sub-trolley body 2 stops moving. The bottom end of the mother car body 1 is provided with a hydraulic movable component 1 47, and the outer wall of the bottom end of the mother car body 1 is provided with a hydraulic movable component 2 48. The lower end of the mother car body 1 is installed with a guide pipe 49.

[0034] The switching assembly 46 includes an electromagnet 1 461 and an electromagnet 2 462. The electromagnet 2 462 is movably connected to one side of the outer wall of the locking slot 44. The lower end side wall of the electromagnet 2 462 is fixedly connected to a guide column 463. The other end of the guide column 463 is fixedly connected to the electromagnet 1 461. The outer side of the electromagnet 1 461 is movably sleeved with a return spring 464. The other end of the return spring 464 is movably connected to the other side of the outer wall of the locking slot 44.

[0035] The hydraulic movable component 47 includes a hydraulic cylinder 471 and a connecting block 473. The hydraulic cylinder 471 is fixedly installed at the bottom end of the mother vehicle body 1. The front end of the hydraulic cylinder 471 is movably connected to a hydraulic rod 472. The connecting block 473 is fixedly installed at the end of the hydraulic rod 472. During the movement of the positioning slide 44 toward the electromagnet 461, the connecting block 473 fixedly connected to the positioning slide 44 drives the hydraulic rod 472 to retract into the hydraulic cylinder 471. The oil in the rodless cavity of the hydraulic cylinder 471 enters the rodless cavity in the hydraulic cylinder 481 through the guide pipe 49. The hydraulic rod 482 extends, driving the positioning block 483 fixedly connected to the hydraulic rod 482 to move upward and enter the positioning groove 21 on the sub-trolley body 2. The position of the sub-trolley body 2 relative to the mother vehicle body 1 is fixed, and the top of the connecting block 473 is fixedly connected to the lower end of the positioning slide 44.

[0036] When the trolley body 2 needs to enter the shelf track again, the electromagnet 1 461 is powered off and the electromagnet 2 462 is powered on. The electromagnet 2 462 generates suction on the magnet 42. The magnet 42 drives the sliding vertical plate 41 and the positioning groove 44 close to the side of the electromagnet 2 462 under the action of suction and spring force. The sliding sleeve 35 is driven by the sliding vertical plate 41 to synchronously approach one end of the engaging shaft 36. The tooth profile 1 351 on the sliding sleeve 35 is re-engaged with the tooth profile 2 361 on the engaging shaft 36. At the same time, the positioning block 483 withdraws from the positioning groove 21, the positioning effect is released, and the inner side of the positioning block 483 is movably connected to the positioning groove 21.

[0037] By means of the sliding sleeve 35, the sliding vertical plate 41, the locking slot 44 and the switching assembly 4, the running state of the sub-trolley body 2 in the middle position of the mother car body 1 is released, and the sub-trolley body 2 is stopped at the middle position, which improves the force balance of the shelf track when the mother car body 1 is running. In view of the problem that there will be bumps when the mother car is running, which may easily cause the position of the sub-trolley body 2 to shift, the middle position of the sub-trolley is locked by the switching assembly, the locking slot and the hydraulic movable part, preventing it from sliding and shifting due to the bumps during the movement of the mother car, thereby improving the safety of the centering and positioning device of the mother-child shuttle.

[0038] Working principle:

[0039] The utility model is mainly used for centering and positioning of the child shuttle when the child shuttle returns to the mother shuttle;

[0040] First, in the initial state, the return spring 464 is at its original length, the locking slot 44 is located on the side close to the second electromagnet 462, and the sliding sleeve 35 and the fitting shaft 36 are fitted together through the tooth profile 1 351 and the tooth profile 2 361;

[0041] Then, when the sub-trolley body 2 is loaded with goods and returns to the mother-trolley body 1, the motor 32 is started, driving the driving shaft 34 to rotate, driving the sliding sleeve 35 connected to the driving shaft 34 to rotate, and the sliding sleeve 35 drives the interlocking shaft 36 to rotate through the mutually interlocking tooth profile 1 351 and tooth profile 2 361. The interlocking shaft 36 drives the wheel shaft 31 to rotate through the synchronous belt 37 on its outer circumference. The wheel shaft 31 drives the running wheel to move from the shelf track to above the slide rail 11 on the mother-trolley body;

[0042] When the trolley body 2 moves to the center position of the mother car body 1, the sliding vertical plate 41 of the sliding sleeve 35 rotates outside and moves to the middle of the locking slot 44. The magnet 42 fixed to the lower part of the sliding vertical plate 41 is opposite to the circular hole opening on the side of the locking slot 44. At this time, the electromagnet 1 461 is energized, and the electromagnet 1 461 generates an attraction force on the magnet 42, driving the sliding vertical plate 41 and the locking slot 44 to overcome the return spring 464 and move closer to the side of the electromagnet 1 461. The sliding sleeve 35 is driven by the sliding vertical plate 41 to synchronously approach one end of the driving shaft 34. The tooth profile 1 351 at the other end of the sliding sleeve 35 and the tooth profile 2 361 on the interlocking shaft 36 are released from the interlocking state. The protruding shaft end 362 on the interlocking shaft 36 is still in the guide groove 352. At this time, the motor 32 can no longer drive the running wheel to rotate, and the trolley body 2 stops moving.

[0043] Then, during the movement of the positioning chute 44 toward the electromagnet 1 461, the connecting block 473 fixedly connected to the positioning chute 44 drives the hydraulic rod 1 472 to retract into the hydraulic cylinder 1 471. The oil in the rodless cavity of the hydraulic cylinder 1 471 enters the rodless cavity of the hydraulic cylinder 2 481 through the guide pipe 49. The hydraulic rod 2 482 extends, driving the positioning block 483 fixedly connected to the hydraulic rod 2 482 to move upward and enter the positioning groove 21 on the sub-trolley body 2. The position of the sub-trolley body 2 relative to the mother vehicle body 1 is fixed;

[0044] Finally, when the sub-carriage body 2 needs to re-enter the rack track, the first electromagnet 461 is de-energized and the second electromagnet 462 is energized. The second electromagnet 462 generates an attractive force on the magnet 42. Under the action of the attraction and the spring force, the magnet 42 drives the sliding plate 41 and the locking groove 44 toward the side of the second electromagnet 462. Driven by the sliding plate 41, the sliding sleeve 35 simultaneously approaches one end of the interlocking shaft 36. The tooth profile 1 351 on the sliding sleeve 35 re-engages the tooth profile 2 361 on the interlocking shaft 36. At the same time, the locking block 483 exits the locking groove 21, and the locking effect is released. At this time, the motor 32 reverses, driving the running wheel to rotate, so that the sub-carriage body 2 moves off the surface of the mother car body 1 and enters the rack track.

[0045] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A centering and positioning device for a mother-child shuttle vehicle, comprising a mother vehicle body (1) and a child vehicle body (2), wherein the child vehicle body (2) is movably arranged above the mother vehicle body (1), and is characterized in that: A walking mechanism (3) is provided below the sub-trolley body (2), a positioning mechanism (4) is provided above the mother car body (1), two slide rails (11) are fixedly installed above the mother car body (1), and a positioning groove (21) is fixedly provided on the outer wall of the lower end of the sub-trolley body (2).

2. The centering and positioning device for a mother-and-child shuttle according to claim 1, characterized in that: The walking mechanism (3) includes a wheel axle (31) and a mounting plate (39), a plurality of the mounting plates (39) are fixedly connected to the bottom end of the sub-car body (2), a plurality of the wheel axles (31) are rotatably connected to the outside of the mounting plate (39), a motor mounting seat (33) is fixedly installed at the lower end of the sub-car body (2), a motor (32) is fixedly connected to the outside of the motor mounting seat (33), an output shaft end of the motor (32) is fixedly connected to a driving shaft (34), and the other end of the driving shaft (34) is keyed to a sliding sleeve (3 5), the other end of the sliding sleeve (35) is movably connected to the interlocking shaft (36), the outer wall of the interlocking shaft (36) is movably sleeved with a synchronous belt (37), the other side of the internal part of the synchronous belt (37) is movably sleeved with the outer wall of the wheel shaft (31), the outer side of the wheel shaft (31) is rotatably connected to a connecting plate (38), the inner side of the other end of the connecting plate (38) is rotatably connected to the interlocking shaft (36), and the two sides of the wheel shaft (31) are rotatably connected to running wheels (30), and a plurality of running wheels (30) roll on the slide rail (11).

3. The centering and positioning device for a mother-and-child shuttle according to claim 2, characterized in that: The inner side of the sliding sleeve (35) is provided with a tooth profile surface 1 (351) and a guide groove (352), the guide groove (352) is fixedly opened on the inner side of the sliding sleeve (35), and the tooth profile surface 1 (351) is fixedly opened at the front end of the sliding sleeve (35).

4. The centering and positioning device for a mother-and-child shuttle according to claim 2, characterized in that: The inner side of the engaging shaft (36) is provided with a second tooth-shaped surface (361) and a protruding shaft end (362), wherein the second tooth-shaped surface (361) is fixedly provided at the end of the engaging shaft (36), and the protruding shaft end (362) is fixedly installed at the front end of the engaging shaft (36), and the outer side of the protruding shaft end (362) is movably connected to the inner side of the guide groove (352).

5. The centering and positioning device for a mother-and-child shuttle according to claim 1, characterized in that: The positioning mechanism (4) includes a sliding vertical plate (41), a magnet (42) and a positioning slot (44), wherein the positioning slot (44) is movably mounted above the mother vehicle body (1), the inner side of the positioning slot (44) is movably connected to the sliding vertical plate (41), the magnet (42) is fixedly mounted on the bottom end of the sliding vertical plate (41), the top end of the sliding vertical plate (41) is slidably connected to the second slide rail (43), the top surface of the mother vehicle body (1) is fixedly mounted with the third slide rail (45), the lower end of the positioning slot (44) is slidably connected to the third slide rail (45), the outer side of the positioning slot (44) is provided with a switching component (46), the bottom end of the mother vehicle body (1) is provided with a hydraulic movable component (1) (47), the outer wall of the bottom end of the mother vehicle body (1) is provided with a hydraulic movable component (2) (48), and the lower end of the mother vehicle body (1) is provided with a guide pipe (49).

6. The centering and positioning device for a mother-and-child shuttle according to claim 5, characterized in that: The switching assembly (46) includes an electromagnet 1 (461) and an electromagnet 2 (462), wherein the electromagnet 2 (462) is movably connected to one side of the outer wall of the locking slot (44), the lower end side wall of the electromagnet 2 (462) is fixedly connected to a guide column (463), the other end of the guide column (463) is fixedly connected to the electromagnet 1 (461), the outer side of the electromagnet 1 (461) is movably sleeved with a return spring (464), and the other end of the return spring (464) is movably connected to the other side of the outer wall of the locking slot (44).

7. The centering and positioning device for a mother-and-child shuttle according to claim 5, characterized in that: The hydraulic movable component 1 (47) includes a hydraulic cylinder 1 (471) and a connecting block (473), wherein the hydraulic cylinder 1 (471) is fixedly mounted on the bottom end of the mother vehicle body (1), the front end of the hydraulic cylinder 1 (471) is movably connected to a hydraulic rod 1 (472), the connecting block (473) is fixedly mounted on the end of the hydraulic rod 1 (472), and the top end of the connecting block (473) is fixedly connected to the lower end of the positioning slot (44).

8. The centering and positioning device for a mother-and-child shuttle according to claim 5, characterized in that: The hydraulic movable component 2 (48) includes a hydraulic cylinder 2 (481) and a blocking block (483). The hydraulic cylinder 2 (481) is fixedly installed in front of the lower end of the mother vehicle body (1). The front end of the hydraulic cylinder 2 (481) is movably connected to the hydraulic rod 2 (482). The front end of the hydraulic rod 2 (482) is fixedly connected to the blocking block (483). The inner side of the blocking block (483) is movably connected to the blocking groove (21).

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