Shuttle vehicle with positioning unit

Abstract

The invention discloses a shuttle vehicle with a positioning unit, which belongs to the technical field of cargo transportation and comprises a shuttle vehicle body, a correlation photoelectric switch is mounted on the shuttle vehicle body, a check block is arranged at the correlation photoelectric switch, a sliding rail is arranged above the check block, and a sliding block in sliding fit with the sliding rail is fixedly arranged on the top surface of the check block. The sliding blocks are elastically connected with the sliding rails, inserting holes are formed in the top faces of the sliding blocks, and inserting rods matched with the inserting holes are elastically connected to the sliding rails. According to the device, through the arranged pressing strips, when a plurality of cargoes are stacked on the tray and a gap exists between every two adjacent cargoes, the two pressing strips can be inserted into the gap and gradually separated along with the two pressing strips, the pressing strips can tightly press the side faces of the cargoes, and in the process that the telescopic pallet fork drives the cargoes to move, the check blocks can be located in the gap between every two adjacent cargoes; therefore, light beams emitted by the emitter can be shielded, and normal use of the correlation photoelectric switch is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of cargo transportation, and in particular to a shuttle vehicle with a positioning unit. Background Art

[0002] The aisle shuttle is an intelligent handling device used in automated warehousing and logistics systems. It is mainly used in scenarios such as high-density warehouses and production line material transfer. It moves quickly in narrow aisles via tracks or preset paths, efficiently completing the storage, retrieval, sorting and transportation of goods.

[0003] Existing shuttle vehicles are generally equipped with detection mechanisms such as through-beam photoelectric switches to detect the position of goods and ensure that the goods are loaded on the shuttle vehicle. Since most of the goods in the warehouse are stacked on pallets, due to vibration during transportation or improper stacking, gaps may appear between adjacent goods on the pallet, thereby affecting the through-beam photoelectric switch's judgment of the position or size of the goods, which is not conducive to the shuttle vehicle's forklift to pick up the goods.

[0004] Therefore, it is necessary to provide a shuttle vehicle with a positioning unit to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a shuttle with a positioning unit to solve the problem raised in the above background technology that the existing shuttle is generally equipped with detection mechanisms such as a through-beam photoelectric switch for detecting the position of the goods, but when a gap appears between two adjacent goods on the pallet, it will affect the judgment of the through-beam photoelectric switch on the position or size of the goods.

[0006] Based on the above ideas, the present invention provides the following technical solutions: a shuttle with a positioning unit, comprising a shuttle, a photoelectric switch mounted on the shuttle, a stopper provided at the photoelectric switch, a slide rail provided above the stopper, a slider fixedly provided on the top surface of the stopper and slidably engaged with the slide rail, and an elastic connection between the slider and the slide rail, a socket provided on the top surface of the slider, an insertion rod elastically connected to the slide rail and engaged with the socket, and an electromagnet provided on the slide rail can cause the insertion rod to move in a vertical direction relative to the slide rail; A pressure plate is elastically connected to the block, and two squeezing units are slidingly provided on the outside of the pressure plate. When the squeezing unit coincides with the gap between two adjacent goods, the squeezing unit can be pushed out by the pressure plate and inserted into the gap between the two goods. As the pressure plate gradually pushes out the squeezing unit, the two squeezing units can be tightly attached to one side of the goods. When both squeezing units are tightly attached to one side of the goods, the electromagnet can drive the insertion rod to move upward so that the bottom end of the insertion rod is separated from the insertion hole.

[0007] As a further solution of the present invention: the extrusion unit includes a positioning block arranged on the outside of the pressure plate and slidingly cooperated with the pressure plate, a positioning groove is opened on the outer side of the pressure plate, the positioning block slides in the positioning groove, and a slide plate is provided on the outside of the pressure plate and located at the positioning block. The slide plate is hinged to the positioning block, and the hinged position is located on the opposite side of the two slide plates. A pressure strip is fixedly provided on the side of the slide plate away from the pressure plate.

[0008] As a further solution of the present invention: the top surface of the positioning block is provided with an installation groove for installing the connecting block, a second tension spring is provided between the bottom surface of the installation groove and the connecting block, the bottom surface of the slide is fixedly connected to the connecting block, a pressure rod is fixedly installed on the side wall of the connecting block, and an avoidance groove for accommodating the pressure rod is provided on the inner wall of the installation groove, and a detection unit is fixedly installed on the top wall of the avoidance groove. When the slide is deflected relative to the positioning block, the pressure rod can move upward in the avoidance groove and contact the detection unit. When both groups of detection units are in a pressurized state, the electromagnet can be in an energized state.

[0009] As a further solution of the present invention: two limit grooves are provided on the top wall and the bottom wall of the inner cavity of the block, and the two limit grooves in the same horizontal plane are distributed in an "eight" shape. The top surface and the bottom surface of the slide are fixedly provided with limit columns, and the limit columns slide in the limit grooves.

[0010] As a further solution of the present invention: both sides of the top surface of the slider are set as inclined surfaces.

[0011] As a further solution of the present invention: the interior of the stopper is a cavity structure and the side of the stopper close to the shuttle is an opening.

[0012] As a further solution of the present invention: the pressure rod is made of iron.

[0013] As a further solution of the present invention: a slide groove is provided on the bottom surface of the slide rail, both ends of the slide groove are in a closed state, and a first tension spring is connected between a surface of the slide groove close to the stop block and the slider.

[0014] As a further solution of the present invention: the cross sections of the slider and the slide groove are both set to be T-shaped.

[0015] As a further solution of the present invention: the beam photoelectric switch has a receiver and a transmitter, a retractable support frame is fixedly provided on the top of the shuttle, and the receiver and the transmitter are both installed on the support frame.

[0016] Compared with the prior art, the beneficial effect of the present invention is that: this device provides a pressure strip, and when multiple goods are stacked on a pallet and there is a gap between two adjacent goods, the two pressure strips can be inserted into the gap and as the two pressure strips gradually separate, the pressure strips can be pressed tightly against the side of the goods. In the process of moving the goods driven by the telescopic fork, the block can be in the gap between the two adjacent goods, which is conducive to blocking the light beam emitted by the transmitter and facilitating the normal use of the photoelectric switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the mounting bracket and the telescopic unit of the present invention; Figure 3 This is a schematic diagram of the cooperation between the insertion rod and the slider of the present invention; Figure 4 It is a schematic diagram of the slide plate and the pressure strip inside the stopper of the present invention; Figure 5 This is a schematic diagram of the connection structure between the slide plate and the pressing plate of the present invention; Figure 6 It is a schematic diagram of the limiting groove structure of the present invention; Figure 7 It is a schematic diagram of the internal structure of the block of the present invention; Figure 8 This is a schematic diagram of the connection structure between the slide plate and the connecting block of the present invention; Figure 9 This is a schematic diagram of the connection structure between the slide plate and the positioning block of the present invention; Figure 10 This invention Figure 8 A schematic diagram of the enlarged structure at point A; Figure 11 It is a schematic diagram of the layering strip of the present invention being located between two goods.

[0018] In the figure: 1. Shuttle; 101. Support frame; 2. Receiver; 3. Transmitter; 4. Pallet; 401. Cargo; 5. Mounting frame; 6. Stop block; 601. Limiting slot; 7. Slide rail; 701. Electromagnet; 702. Slide slot; 8. Telescopic unit; 9. Slider; 901. Socket; 902. Inclined surface; 10. Insert rod; 11. First tension spring; 12. Pressure plate; 1201. Positioning slot; 13. Slide plate; 1301. Limiting column; 14. Pressure strip; 15. Positioning block; 16. Limiting spring; 17. Connecting block; 1701. Pressure rod; 18. Detection unit; 19. Second tension spring; 20. Mounting slot. DETAILED DESCRIPTION

[0019] like Figure 1-3As shown, a shuttle with a positioning unit includes a shuttle 1 and a telescopic fork (not shown) installed on the top of the shuttle 1. When actually used, the shuttle 1 can move on the track in the warehouse to transport the goods 401 on the shelf. Figure 1 As shown, the pallet 4 and the goods 401 on the pallet 4 can be forked by the telescopic fork; Furthermore, the shuttle 1 is provided with a detection mechanism on both the left and right sides, and the detection mechanism can be a photoelectric switch. Figure 1-Figure 2 As shown, the beam photoelectric switch has a receiver 2 and a transmitter 3, and a retractable support frame 101 is fixedly installed on the top of the shuttle 1. The above-mentioned receiver 2 and transmitter 3 are both installed on the support frame 101, and the receiver 2 and transmitter 3 are on the same horizontal plane. When the telescopic fork picks up the goods 401 from one side and enters above the shuttle 1, the light beam emitted by the transmitter 3 is blocked by the goods 401. When the goods 401 completely enters above the shuttle 1, the receiver 2 can receive the light emitted by the transmitter 3 again. Through this structure, the position of the goods 401 can be detected to ensure that the goods 401 are completely transported to the top of the shuttle 1. Since this part of the content is about the conventional design of the shuttle 1, it will not be repeated here.

[0020] Reference 1- Figure 2 As shown, in actual use, due to vibration during transportation or errors caused by placement, gaps may appear between two adjacent goods 401 on the pallet 4. In this case, the detection of the beam photoelectric switch will be affected. Based on this problem, the present solution provides a block 6 at the emitter 3 for blocking the emitted light beam. The block 6 is located on the side of the emitter 3 close to the goods 401. Figure 1 As shown, a slide rail 7 is provided above the support frame 101 to cooperate with the stopper 6. Specifically, the stopper 6 slides at the bottom of the slide rail 7. Figure 3 As shown, a slider 9 is fixedly provided on the top surface of the stopper 6, and the slider 9 slides in the slide groove 702 on the bottom surface of the slide rail 7. Both ends of the slide groove 702 are in a closed state. A first tension spring 11 is connected between the side of the slide groove 702 close to the stopper 6 and the slider 9. When the slider 9 moves in the slide groove 702 in the direction away from the stopper 6, the first tension spring 11 can be pulled. The cross sections of the slider 9 and the slide groove 702 are both set to T-shaped. Figure 3 As shown, a socket 901 is provided on the top surface of the slider 9, and a plug rod 10 is provided on the slide rail 7 to cooperate with the socket 901. The plug rod 10 is elastically matched with the slide rail 7, and the electromagnet 701 provided on the slide rail 7 can cause the plug rod 10 to move in the vertical direction relative to the slide rail 7. Of course, the plug rod 10 is made of iron. Figure 3As shown, the electromagnet 701 is located above the insertion rod 10 and is fixedly connected to the slide rail 7; Reference Figure 1 、 Figure 4-Figure 7 、 Figure 11 When the fork 12 pushes the two extrusion units outward, the two extrusion units can move away from each other. Similarly, when the goods 401 are picked up by the telescopic fork and placed above the shuttle 1, the side of the goods 401 close to the shuttle 1 can push the extrusion units extending out of the stopper 6, thereby prompting the extrusion units to be retracted into the stopper 6. If there are multiple goods 401 on the pallet 4 and there is a gap between two adjacent goods 401, when the goods 401 enter the shuttle 1, the extrusion units can overlap with the gap between the two adjacent goods 401, so that the extrusion units can be pushed out by the pressure plate 12 again and inserted into the gap between the two goods 401, and as the pressure plate 12 gradually pushes out the extrusion units, the two extrusion units can be tightly attached to one side of the goods 401. Figure 11 As shown, when the two extrusion units on one side of the block 6 are both pressed against one side of the cargo 401, the electromagnet 701 can drive the insertion rod 10 to move upward so that the bottom end of the insertion rod 10 is separated from the socket 901, so that the block 6 can be driven to move synchronously in the process of the telescopic fork picking up the cargo 401, and the light beam emitted by the transmitter 3 is blocked by the block 6.

[0021] The extrusion unit includes a positioning block 15 disposed outside the pressing plate 12 and slidingly engaged with the pressing plate 12. Figure 7 As shown, a positioning groove 1201 is provided on the outer side of the pressing plate 12, so that the positioning block 15 can slide in the positioning groove 1201, and the cross section of the positioning groove 1201 and the positioning block 15 is set to T-shaped. Figure 7 、 Figure 9 As shown, a slide plate 13 is provided outside the pressure plate 12 and at the positioning block 15. The slide plate 13 is hinged to the positioning block 15. Figure 9 The hinge position is shown in Figure 7 、 Figure 9 As shown, the hinged position is located on the opposite side of the two slides 13; A pressure strip 14 is fixedly provided on one side of the slide plate 13 away from the pressure plate 12. Figure 11 The middle part shows the state where the two pressure strips 14 are located in the gap between two adjacent goods 401 and fit with the goods 401.

[0022] Combine Figures 8-10As shown, the top surface of the positioning block 15 is provided with a mounting groove 20 for mounting the connecting block 17, and a second tension spring 19 is fixedly provided between the bottom surface of the inner portion of the mounting groove 20 and the connecting block 17, and the bottom surface of the above-mentioned slide plate 13 is fixedly connected to the connecting block 17. When the slide plate 13 deflects relative to the pressure plate 12, the second tension spring 19 can be pulled. A pressure rod 1701 is fixedly mounted on the side wall of the connecting block 17, and an avoidance groove for accommodating the pressure rod 1701 is provided at the inner wall of the mounting groove 20. Figure 10 As shown, a detection unit 18 is fixedly installed on the top wall of the avoidance groove. The avoidance groove can be annular or strip-shaped. When the slide plate 13 deflects inward relative to the positioning block 15, the pressure rod 1701 can move upward in the avoidance groove and contact the detection unit 18. In specific applications, when both slide plates 13 deflect inward relative to the positioning block 15, the two sets of detection units 18 are triggered. At this time, the electromagnet 701 can be in an energized state, which is conducive to the adsorption of the insertion rod 10, so that the bottom end of the insertion rod 10 moves out of the socket 901.

[0023] Combine Figure 4-Figure 7 As shown, two limiting grooves 601 are provided on the top wall and bottom wall of the inner cavity of the stopper 6. Figure 4 As shown, the two limiting grooves 601 in the same horizontal plane are distributed in an "eight" shape, and the top and bottom surfaces of the slide 13 are fixedly provided with limiting columns 1301, and the limiting columns 1301 slide in the limiting grooves 601. When the pressure plate 12 pushes the slide 13 outward, the limiting grooves 601 squeeze the limiting columns 1301 to drive the two pressure strips 14 away from each other.

[0024] In actual use, the goods 401 on the pallet 4 can be forked by the telescopic fork, and in the initial state, the pressure strip 14 at the stopper 6 is in a pop-up state and the goods 401 can overlap with the pressure strip 14 as the telescopic fork moves. When there is only one piece of goods 401 on the pallet 4, the two pressure strips 14 can move closer to each other as the telescopic fork moves and pushes the pressure strip 14. Figure 4As shown, in the process of the two pressure strips 14 approaching each other, the cooperation between the limit groove 601 and the limit column 1301 allows the two pressure strips 14 to be retracted into the block 6, and the pressure plate 12 is also further compressed into the block 6 during this process. As the pressure strip 14 is gradually retracted into the block 6, the pressure strip 14 will be staggered with the goods 401 and located outside the goods 401. When the goods 401 have completely passed the pressure strip 14, the pressure strip 14 can be ejected by the pressure plate 12. As the pressure strip 14 is ejected, the cooperation between the limit groove 601 and the limit column 1301 can cause the two pressure strips 14 to separate from each other, so that the pressure strip 14 close to the goods 401 can be pressed against the side of the goods 401, and the pressure of the goods 401 on the pressure strip 14 can drive the pressure strip 14 to deflect, thereby causing the slide plate 13 to deflect relative to the positioning block 15. Figure 8 、 Figure 10 As shown, during the deflection of the slide plate 13 relative to the positioning block 15, the slide plate 13 can drive the connecting block 17 to deflect upward, overcoming the force of the second tension spring 19. During this process, the pressure rod 1701 can move upward and squeeze the detection unit 18. According to the above description, only when both detection units 18 are triggered can the electromagnet 701 be in a charged state. Since only one cargo 401 is stacked on the pallet 4, when the cargo 401 is offset from the pressure strip 14, only one pressure strip 14 can be pressed against the side of the cargo 401. In this case, the electromagnet 701 does not work, so that one end of the insertion rod 10 is still in the insertion hole 901, thereby preventing the stopper 6 from moving together with the cargo 401. When multiple goods 401 are stacked on the pallet 4 and there is a gap between two adjacent goods 401, after the previous goods 401 are staggered with the pressure strip 14, the pressure strip 14 can be pushed out by the pressure plate 12 and inserted into the gap between the two goods 401. According to the above analysis, during the pop-up process of the pressure strip 14, the cooperation between the limiting groove 601 and the limiting column 1301 allows the two pressure strips 14 to move away from each other. When the two pressure strips 14 are pressed tightly against the sides of the goods 401, the pressure plate 12 will stop pushing the slide plate 13 and the pressure strip 14. Figure 11 The figure shows a state where the pressure strip 14 is inserted between the two goods 401 and pressed against the side of the goods 401. At this time, both pressure strips 14 are pressed and drive the pressure rod 1701 to deflect relative to the positioning block 15, so that both detection units 18 are triggered, so that the electromagnet 701 can be in an energized state. The suction force of the electromagnet 701 on the insertion rod 10 can drive the insertion rod 10 to move upward, so that the bottom end of the insertion rod 10 is separated from the insertion hole 901. At this point, the stopper 6 is disconnected from the slide rail 7, and the stopper 6 is limited by the pressure strip 14 to the gap between the two goods 401. When the telescopic fork picks up the goods 401, the stopper 6 can move synchronously with the goods 401, thereby blocking the light beam emitted by the transmitter 3, which is conducive to the normal use of the photoelectric switch. Reference Figure 3 As shown, when the slider 9 slides to the end of the slide rail 7, the end of the slide rail 7 can prevent the slider 9 from continuing to move. At this time, when the cargo 401 continues to move with the telescopic fork, the cargo 401 can push the pressure bar 14, thereby causing the two pressure bars 14 to approach each other, and the two pressure bars 14 can be retracted into the block 6 during the process of approaching each other. When the pressure bar 14 is staggered with the cargo 401 and placed on one side of the cargo 401, the slider 9 can be pulled back to its original position by the first tension spring 11. In this state, the two pressure bars 14 are not under pressure, so that the electromagnet 701 is in a de-energized state. During the resetting process of the slider 9, the insertion rod 10 can be aligned with the socket 901 on the top surface of the slider 9, so that the bottom end of the insertion rod 10 can be reinserted into the socket 901, which is conducive to reuse.

[0025] To sum up, this device has a pressure strip 14, and when multiple goods 401 are stacked on the pallet 4 and there is a gap between two adjacent goods 401, the two pressure strips 14 can be inserted into the gap and as the two pressure strips 14 gradually separate, the pressure strips 14 can be pressed tightly against the side of the goods 401. In the process of the telescopic fork driving the goods 401 to move, the block 6 can be in the gap between the two adjacent goods 401, which is beneficial to blocking the light beam emitted by the transmitter 3 and is beneficial to the normal use of the photoelectric switch.

[0026] Reference Figure 2 As shown, a mounting frame 5 is provided on one side of the shuttle 1, and the above-mentioned slide rail 7 is fixedly installed at the top position of the mounting frame 5. In actual use, a telescopic unit 8 can be fixedly installed on the shuttle 1, and the output end of the telescopic unit 8 can be fixedly connected to the mounting frame 5, so as to adjust the position of the mounting frame 5 and the slide rail 7. Specifically, the telescopic unit 8 can be a cylinder or a hydraulic rod. In specific applications, the position of the mounting frame 5 can be adjusted according to the width of the goods 401, so as to adjust the position of the block 6, so that the goods 401 can contact the pressure strip 14 during the process of moving to the top of the shuttle 1. Since the warehouse system records corresponding information for each goods 401, the staff can adjust the position of the mounting frame 5 according to the width of the goods 401. In addition, if the shuttle 1 is equipped with relevant visual sensors, the width of the goods 401 can also be automatically detected by the visual sensors, and then the telescopic unit 8 can be controlled to adjust the position of the mounting frame 5.

[0027] Reference Figure 3 As shown, the top of the insertion rod 10 is integrally formed with a flange, and a first spring is fixedly arranged between the bottom surface of the flange and the top surface of the slide rail 7. The first spring can be sleeved on the outside of the insertion rod 10 so that the insertion rod 10 can elastically cooperate with the slide rail 7.

[0028] Reference Figure 4As shown, both sides of the top surface of the slider 9 are set as inclined surfaces 902, combined with Figure 3 As shown, in the process of the first tension spring 11 driving the slider 9 to return, the inclined surface 902 can squeeze the insertion rod 10, thereby prompting the insertion rod 10 to move upward, thereby avoiding interference between the insertion rod 10 and the slider 9.

[0029] In actual use, the pressure strip 14 can be made of hard plastic or steel plate.

[0030] Reference Figure 7 As shown, a limit spring 16 is fixedly provided between the inner end surface of the stopper 6 and the pressure plate 12 , and the pressure of the limit spring 16 can push the pressure plate 12 .

[0031] Reference Figure 3 、 Figure 8 、 Figure 10 As shown, the detection unit 18 can be a switch or a pressure sensor, and the detection unit 18 is electrically connected to the electromagnet 701. The two detection units 18 and the electromagnet 701 are connected in series in a circuit. Only when the two detection units 18 are triggered can the electromagnet 701 be in a powered state. Of course, the detection unit 18 can also wirelessly control the electromagnet 701 through Bluetooth. Only when the circuit of the electromagnet 701 receives two wireless signals can the electromagnet 701 be triggered to be in a powered state. The circuit structure and working principle of wireless control are mature technical means and will not be elaborated here.

Claims

1. A shuttle with a positioning unit, comprising a shuttle, on which a photoelectric switch is mounted, characterized in that: A stopper is provided at the beam photoelectric switch, a slide rail is provided above the stopper, a slider that slides with the slide rail is fixedly provided on the top surface of the stopper, and the slider and the slide rail are elastically connected, a socket is provided on the top surface of the slider, and a rod that cooperates with the socket is elastically connected to the slide rail, and the electromagnet provided on the slide rail can cause the rod to move in the vertical direction relative to the slide rail; A pressure plate is elastically connected to the block, and two squeezing units are slidingly provided on the outside of the pressure plate. When the squeezing unit coincides with the gap between two adjacent goods, the squeezing unit can be pushed out by the pressure plate and inserted into the gap between the two goods. As the pressure plate gradually pushes out the squeezing unit, the two squeezing units can be tightly attached to one side of the goods. When both squeezing units are tightly attached to one side of the goods, the electromagnet can drive the insertion rod to move upward so that the bottom end of the insertion rod is separated from the insertion hole.

2. The shuttle vehicle with a positioning unit according to claim 1, characterized in that: The extrusion unit includes a positioning block arranged on the outside of the pressure plate and slidingly cooperated with the pressure plate, a positioning groove is opened on the outer side of the pressure plate, and the positioning block slides in the positioning groove. A slide plate is provided on the outside of the pressure plate and located at the positioning block. The slide plate is hinged to the positioning block, and the hinged position is located on the opposite side of the two slide plates. A pressure strip is fixedly provided on the side of the slide plate away from the pressure plate.

3. The shuttle vehicle with a positioning unit according to claim 2, characterized in that: The top surface of the positioning block is provided with an installation groove for installing the connecting block, and a second tension spring is provided between the bottom surface of the installation groove and the connecting block. The bottom surface of the slide is fixedly connected to the connecting block, and a pressure rod is fixedly installed on the side wall of the connecting block. An avoidance groove for accommodating the pressure rod is provided on the inner wall of the installation groove, and a detection unit is fixedly installed on the top wall of the avoidance groove. When the slide is deflected relative to the positioning block, the pressure rod can move upward in the avoidance groove and contact the detection unit. When both groups of detection units are in a pressurized state, the electromagnet can be in an energized state.

4. The shuttle vehicle with a positioning unit according to claim 3, characterized in that: Two limit grooves are provided on the top wall and the bottom wall of the inner cavity of the block. The two limit grooves in the same horizontal plane are distributed in an "eight" shape. The top surface and the bottom surface of the slide are fixed with limit columns, and the limit columns slide in the limit grooves.

5. The shuttle vehicle with a positioning unit according to claim 1, characterized in that: Both sides of the top surface of the slider are arranged as inclined surfaces.

6. The shuttle vehicle with a positioning unit according to claim 1, characterized in that: The interior of the stopper is a cavity structure, and the side of the stopper close to the shuttle vehicle is an opening.

7. The shuttle vehicle with a positioning unit according to claim 3, characterized in that: The pressing rod is made of iron.

8. The shuttle vehicle with a positioning unit according to claim 1, characterized in that: A sliding groove is provided on the bottom surface of the slide rail, both ends of the sliding groove are in a closed state, and a first tension spring is connected between a surface of the sliding groove close to the stop block and the sliding block.

9. The shuttle vehicle with a positioning unit according to claim 8, characterized in that: The cross sections of the slider and the slide groove are both set to be T-shaped.

10. The shuttle vehicle with a positioning unit according to claim 2, characterized in that: The beam photoelectric switch has a receiver and a transmitter. A retractable support frame is fixedly provided on the top of the shuttle vehicle, and the receiver and the transmitter are both installed on the support frame.

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