A telescopic mechanism and a fork device

Abstract

The utility model relates to a cargo fork technical field especially relates to a telescopic mechanism and cargo fork device. Telescopic mechanism includes fixed side plate, first side plate and drive assembly, first side plate sliding installation on fixed side plate, drive assembly includes rotary drive piece, driving wheel, driven wheel, synchronous belt and install first rack on first side plate, the opposite sides of synchronous belt are equipped with inner tooth and outer tooth respectively, driving wheel and driven wheel interval rotation installation on fixed side plate, synchronous belt sleeve joint on driving wheel and driven wheel, just inner tooth with driving wheel and driven wheel all engage, outer tooth with first rack engage, the output of rotary drive piece connects driving wheel. In the utility model, the telescopic mechanism has greater stroke, and its compact structure, occupies small space.

Description

Technical Field

[0001] This utility model relates to the field of fork technology, and in particular to a telescopic mechanism and fork device. Background Technology

[0002] Forklifts are typically installed inside drone docking stations or on stacker cranes in warehousing and logistics. These forklifts move goods into the docking station or onto the stacker crane. Forklifts usually consist of a telescopic mechanism and a hooking mechanism. The telescopic mechanism moves the hooking mechanism, allowing it to push or pull goods. However, existing telescopic mechanisms suffer from a short stroke. Summary of the Invention

[0003] This utility model provides a telescopic mechanism and a fork device to solve the technical problems of short stroke in existing telescopic mechanisms.

[0004] An embodiment of the present invention provides a telescopic mechanism, including a fixed side plate, a first side plate and a driving assembly, wherein the first side plate is slidably mounted on the fixed side plate;

[0005] The drive assembly includes a rotary drive component, a drive wheel, a driven wheel, a timing belt, and a first rack mounted on the first side plate; the timing belt has internal teeth and external teeth on opposite sides; the drive wheel and the driven wheel are rotatably mounted on the fixed side plate at intervals, the timing belt is sleeved on the drive wheel and the driven wheel, and the internal teeth mesh with both the drive wheel and the driven wheel, and the external teeth mesh with the first rack; the output end of the rotary drive component is connected to the drive wheel.

[0006] Optionally, the telescopic mechanism further includes a first guide assembly; the first guide assembly includes a first guide rail and a plurality of first guide wheels, the first guide rail is mounted on the fixed side plate, and all the first guide wheels are spaced apart on the first side plate;

[0007] The first guide rail is provided with a first guide part, and all the first guide wheels are provided with a first rolling groove, and the first guide part is slidably inserted into the first rolling groove.

[0008] Optionally, the telescopic mechanism further includes a plurality of support gears spaced apart on the fixed side plate, all of which mesh with the internal gears.

[0009] Optionally, the telescopic mechanism further includes a second side plate and a transmission assembly, wherein the second side plate is slidably mounted on the first side plate;

[0010] The transmission assembly includes a first pulley, a second pulley, a transmission belt, a second rack, and a third rack; the first pulley and the second pulley are rotatably mounted on the first side plate at intervals, and the transmission belt is sleeved on the first pulley and the second pulley;

[0011] The transmission belt has teeth on the side opposite to the first pulley, the second rack is mounted on the second side plate, and the third rack is mounted on the fixed side plate. Both the second rack and the third rack mesh with the belt teeth.

[0012] Optionally, the telescopic mechanism further includes a second guide assembly; the second guide assembly includes a second guide rail and a plurality of second guide wheels, the second guide rail is mounted on the first side plate, and all the second guide wheels are spaced apart on the second side plate;

[0013] The second guide rail is provided with a second guide part, and all the second guide wheels are provided with a second rolling groove, and the second guide part is slidably inserted into the second rolling groove.

[0014] Optionally, the fixed side plate is provided with a first positioning hole, the first side plate is provided with a second positioning hole, and the second side plate is provided with a third positioning hole;

[0015] When the second side plate is folded onto the first side plate, and the first side plate is folded onto the fixed side plate, the first positioning hole, the second positioning hole, and the third positioning hole are coaxial and sequentially connected.

[0016] Optionally, the first side plate is slidably mounted on the fixed side plate along the first direction, and the second side plate is slidably mounted on the first side plate along the first direction;

[0017] The axis of the drive wheel is the second direction, and the axis of the first pulley is the third direction; the first direction, the second direction, and the third direction are perpendicular to each other.

[0018] Another embodiment of this utility model provides a forklift device, including a base, a hooking mechanism, and the aforementioned telescopic mechanism; the fixed side plate is mounted on the base, and the hooking mechanism is mounted on the second side plate.

[0019] Optionally, the opposite sides of the base and the fixed side plate are respectively the first side and the second side; the fork assembly further includes a first detection element, a second detection element, a third detection element, a fourth detection element, and a fifth detection element;

[0020] The first detection element is installed on the first side of the fixed side plate and is used to detect whether the first side plate and the second side plate extend out of the fixed side plate from the first side.

[0021] The second detection element is installed on the second side of the fixed side plate and is used to detect whether the first side plate and the second side plate extend out of the fixed side plate from the second side;

[0022] The third detection component is installed on the first side of the base and is used to detect whether there is a hook-to-be-picked component in front of the base;

[0023] The fourth detection component is installed on the second side of the base and is used to detect whether there is a hook-up component behind the base.

[0024] The fifth detection component is installed on the base and is used to detect whether there is a hook-up component on the base.

[0025] Optionally, the hooking mechanism includes a hooking drive and a lever. The hooking drive is mounted on the second side plate, and the output end of the hooking drive is connected to the lever. The hooking drive is used to drive the lever to rotate.

[0026] In this invention, the driving assembly includes a rotary drive component, a driving wheel, a driven wheel, a timing belt, and a first rack mounted on the first side plate. The timing belt has internal and external teeth on opposite sides. The driving wheel and the driven wheel are rotatably mounted on the fixed side plate at intervals. The timing belt is sleeved on the driving wheel and the driven wheel, with the internal teeth meshing with both the driving wheel and the driven wheel, and the external teeth meshing with the first rack. The rotary drive component drives the driving wheel to rotate, and the driving wheel moves the timing belt through the internal teeth. The timing belt moves the first side plate through the external teeth and the first rack. Because there are multiple meshing parts between the external teeth of the timing belt and the first rack, the distance the first side plate can extend from both sides of the fixed side plate can be greater than half the length of the first side plate. Therefore, the stroke of the first side plate is greater than twice the length of the first side plate but less than three times the length of the first side plate, resulting in a larger stroke and improved applicability of the telescopic mechanism. Furthermore, this telescopic mechanism has a compact structure and occupies little space. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the telescopic mechanism provided in one embodiment of the present invention when it is in the retracted state;

[0029] Figure 2 This is a schematic diagram of the telescopic mechanism provided in an embodiment of the present invention when it is in the extended state;

[0030] Figure 3 This is a structural schematic diagram of the fixed side plate portion of the telescopic mechanism provided in an embodiment of this utility model;

[0031] Figure 4 This is a structural schematic diagram of the first side plate portion provided in an embodiment of the present utility model;

[0032] Figure 5 This is a structural schematic diagram of the first side plate portion provided in one embodiment of the present invention from another perspective;

[0033] Figure 6 This is a schematic diagram of the structure of the second side plate portion of the telescopic mechanism provided in one embodiment of the present utility model;

[0034] Figure 7 This is a schematic diagram of the structure of a forklift device provided in an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the base portion provided in one embodiment of the present invention.

[0036] The reference numerals in the accompanying drawings are as follows:

[0037] 1. Telescopic mechanism; 11. Fixed side plate; 111. First positioning hole; 12. First side plate; 121. Second positioning hole; 13. Drive assembly; 131. Rotary drive component; 132. Drive wheel; 133. Driven wheel; 134. Synchronous belt; 1341. Internal gear; 1342. External gear; 135. First rack; 14. First guide assembly; 141. First guide rail; 1411. First guide section; 142. First guide wheel; 15. Support gear; 16. Transmission assembly; 161. 1. Belt pulley; 162. Second belt pulley; 163. Drive belt; 1631. Toothed belt; 164. Second rack; 165. Third rack; 17. Second side plate; 171. Third positioning hole; 18. Second guide assembly; 181. Second guide rail; 1811. Second guide part; 182. Second guide wheel; 2. Base; 3. Hooking mechanism; 31. Hooking drive component; 32. Lever; 4. First detection component; 5. Second detection component; 6. Third detection component; 7. Fifth detection component; 8. Fourth detection component. Detailed Implementation

[0038] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] In this application, the first direction is Figure 7 The X direction in the middle, the second direction is Figure 7 In the Y direction, the third direction is Figure 7 The Z-direction in the middle.

[0040] like Figures 1 to 4 As shown, an embodiment of the present invention provides a telescopic mechanism 1, which includes a fixed side plate 11, a first side plate 12 and a drive assembly 13, wherein the first side plate 12 is slidably mounted on the fixed side plate 11.

[0041] The drive assembly 13 includes a rotary drive 131, a drive wheel 132, a driven wheel 133, a timing belt 134, and a first rack 135 mounted on the first side plate 12. The timing belt 134 has internal teeth 1341 and external teeth 1342 on opposite sides. The drive wheel 132 and the driven wheel 133 are rotatably mounted on the fixed side plate 11 at intervals. The timing belt 134 is sleeved on the drive wheel 132 and the driven wheel 133. The internal teeth 1341 mesh with both the drive wheel 132 and the driven wheel 133, and the external teeth 1342 mesh with the first rack 135. The output end of the rotary drive 131 is connected to the drive wheel 132.

[0042] The first side plate 12 can be slidably mounted on the fixed side plate 11 via a guide rail slider assembly, a guide rod sleeve assembly, etc.; one or more driven wheels 133 can be provided according to actual needs. The outer side of the synchronous belt 134 is provided with a plurality of spaced external teeth 1342, and the inner side of the synchronous wheel is provided with a plurality of spaced internal teeth 1341. The rotary drive component 131 includes, but is not limited to, a motor.

[0043] In this invention, the drive assembly 13 includes a rotary drive 131, a drive wheel 132, a driven wheel 133, a timing belt 134, and a first rack 135 mounted on the first side plate 12. The timing belt 134 has internal teeth 1341 and external teeth 1342 on opposite sides. The drive wheel 132 and the driven wheel 133 are rotatably mounted on the fixed side plate 11 at intervals. The timing belt 134 is sleeved on the drive wheel 132 and the driven wheel 133, and the internal teeth 1341 mesh with both the drive wheel 132 and the driven wheel 133, while the external teeth 1342 mesh with the first rack 135. The rotary drive 131 drives the drive wheel 132 to rotate. The drive wheel 132 drives the synchronous belt 134 to move via the internal teeth 1341. The synchronous belt 134 drives the first side plate 12 to move via the external teeth 1342 and the first rack 135. Since there are multiple meshing parts between the external teeth 1342 of the synchronous belt 134 and the first rack 135, the first side plate 12 can extend from both sides of the fixed side plate 11 by a distance greater than half its length. Therefore, the stroke of the first side plate 12 is greater than twice its length but less than three times its length, resulting in a larger stroke and improving the applicability of the telescopic mechanism 1. Furthermore, the telescopic mechanism 1 has a compact structure and occupies little space.

[0044] To further explain, in the prior art, the conveyor belt typically has a toothed structure on its inner surface. The toothed structure meshes with the pulleys, and the conveyor belt needs to use a belt clamp or other device to move the first side plate 12. The engagement position between the first side plate 12 and the conveyor belt is fixed, resulting in a short travel distance for the conveyor belt to move the first side plate 12. In contrast, the synchronous belt 134 in this application has internal teeth 1341 on its inner surface. The internal teeth 1341 mesh with the driving pulley 132 and the driven pulley 133 (the same function as in the prior art conveyor belt). External teeth 1342 are provided on the outer surface of the synchronous belt 134. The external teeth 1342 mesh with the first rack 135. Since the external teeth 1342 and the first rack 135 have multiple meshing points, the first rack 135 and the first side plate 12 have a larger travel distance.

[0045] In one embodiment, such as Figures 2 to 4 As shown, the telescopic mechanism 1 further includes a first guide assembly 14; the first guide assembly 14 includes a first guide rail 141 and a plurality of first guide wheels 142, the first guide rail 141 is mounted on the fixed side plate 11, and all the first guide wheels 142 are spaced apart on the first side plate 12;

[0046] The first guide rail 141 is provided with a first guide part 1411, and all the first guide wheels 142 are provided with a first rolling groove. The first guide part 1411 is slidably inserted into the first rolling groove.

[0047] The number of the first guide wheels 142 can be set according to actual needs, and all the first guide wheels 142 are spaced apart along the direction of movement of the first side plate 12; the cross-section of the first guide part 1411 can be a semi-circular arc surface; the first side plate 12 is slidably mounted on the fixed side plate 11 through the first guide assembly 14.

[0048] Specifically, during the movement of the first side plate 12, the first guide wheel 142 rolls along the first guide rail 141, and the first guide wheel 142 can restrict the direction of the first guide rail 141 through the first rolling groove, thereby ensuring the stability of the movement of the first side plate 12; in addition, the first guide rail 141 and the first guide wheel 142 have rolling friction, and the friction between the first guide rail 141 and the first guide wheel 142 is small, which further ensures the stability of the movement of the first side plate 12.

[0049] In one embodiment, such as Figure 3 As shown, the telescopic mechanism 1 also includes a plurality of support gears 15 spaced apart on the fixed side plate 11, all of which mesh with the internal gear 1341.

[0050] The first rack 135 is installed below the first side plate 12; the number of the supporting gears 15 can be set according to actual needs, and the supporting gears 15 are located inside the synchronous belt 134, so that the supporting gears 15 can support the synchronous belt 134 from below, ensuring the stability of the meshing between the first rack 135 and the synchronous belt 134.

[0051] In one embodiment, such as Figures 1 to 6 As shown, the telescopic mechanism 1 also includes a second side plate 17 and a transmission assembly 16, wherein the second side plate 17 is slidably mounted on the first side plate 12;

[0052] The transmission assembly 16 includes a first pulley 161, a second pulley 162, a transmission belt 163, a second rack 164, and a third rack 165; the first pulley 161 and the second pulley 162 are rotatably mounted on the first side plate 12 at intervals, and the transmission belt 163 is sleeved on the first pulley 161 and the second pulley 162;

[0053] The transmission belt 163 has a tooth 1631 on the side opposite to the first pulley 161. The second rack 164 is mounted on the second side plate 17, and the third rack 165 is mounted on the fixed side plate 11. Both the second rack 164 and the third rack 165 mesh with the tooth 1631.

[0054] The fixed side plate 11, the first side plate 12, and the second side plate 17 are arranged in parallel, with the first side plate 12 located between the fixed side plate 11 and the second side plate 17. The first pulley 161 and the second pulley 162 are installed at intervals on the first side plate 12 along the moving direction of the second side plate 17; the second side plate 17 can be slidably installed on the first side plate 12 via a guide rail slider assembly, a guide rod sleeve assembly, etc.

[0055] Specifically, the rotary drive 131 drives the drive wheel 132 to rotate. The drive wheel 132 drives the synchronous belt 134 to move through the internal teeth 1341. The synchronous belt 134 drives the first side plate 12 to move through the external teeth 1342 and the first rack 135. At the same time, the first side plate 12 drives the transmission belt 163 to move through the third rack 165. The transmission belt 163 drives the second side plate 17 to move through the second rack 164. Since there are multiple meshing parts between the external teeth 1342 of the synchronous belt 134 and the first rack 135, the distance that the first side plate 12 can extend from the left and right sides of the fixed side plate 11 can be greater than half the length of the first side plate 12. Since there are multiple meshing parts between the belt teeth 1631 of the transmission belt 163 and the second rack 164 and the third rack 165, the distance that the second side plate 17 can output from the left and right sides of the first side plate 12 can be greater than half the length of the second side plate 17. In this embodiment, the telescopic mechanism 1 has a large stroke, and the telescopic mechanism 1 has a compact structure and occupies little space.

[0056] In the prior art, the conveyor belt has a toothed structure on its inner surface. The toothed structure meshes with the pulley. The conveyor belt needs to be driven by a belt clamp or other device to move the second side plate 17. The engagement position between the second side plate 17 and the conveyor belt is fixed, so the travel distance of the conveyor belt to move the second side plate 17 is relatively short. Compared to existing transmission belts, the transmission belt 163 in this application has teeth 1631 disposed on its outer surface. The teeth 1631 simultaneously mesh with the second rack 164 and the third rack 165. The transmission belt 163 is driven by the third rack 165, and the component driving the transmission belt 163 is the second rack 164. The first pulley 161 and the second pulley 162 only serve to engage the transmission belt 163 and do not drive it (therefore, there is no need to consider whether slippage occurs between the first pulley 161 and the second pulley 162 and the transmission belt 163). In this application, there is no need to configure a rotary drive component for the first pulley 161 and the second pulley 162, which reduces the manufacturing cost of the telescopic mechanism 1 and improves its compactness.

[0057] In one embodiment, such as Figure 4 and Figure 5 As shown, the telescopic mechanism 1 further includes a support block mounted on the first side plate 12. The support block is located in the middle of the transmission belt 163 and is used to enable the belt teeth 1631 to mesh with the second rack 164 and the third rack 165. In this embodiment, the support block increases the rigidity of the transmission belt 163, thereby ensuring the stability of the meshing of the belt teeth 1631 with the second rack 164 and the third rack 165.

[0058] In one embodiment, such as Figure 5 and Figure 6 As shown, the telescopic mechanism 1 further includes a second guide assembly 18; the second guide assembly 18 includes a second guide rail 181 and a plurality of second guide wheels 182, the second guide rail 181 is mounted on the first side plate 12, and all the second guide wheels 182 are spaced apart on the second side plate 17;

[0059] The second guide rail 181 is provided with a second guide part 1811, and all the second guide wheels 182 are provided with a second rolling groove. The second guide part 1811 is slidably inserted into the second rolling groove.

[0060] The number of the second guide wheels 182 can be set according to actual needs, and all the second guide wheels 182 are spaced apart along the direction of movement of the second side plate 17; the cross-section of the second guide part 1811 can be a semi-circular arc surface; the second side plate 17 is slidably mounted on the first side plate 12 through the second guide assembly 18.

[0061] Specifically, during the movement of the second side plate 17, the second guide wheel 182 rolls along the second guide rail 181, and the second guide wheel 182 can restrict the direction of the second guide rail 181 through the second rolling groove, thereby ensuring the stability of the movement of the second side plate 17; in addition, the second guide rail 181 and the second guide wheel 182 have rolling friction, and the friction between the second guide rail 181 and the second guide wheel 182 is small, which further ensures the stability of the movement of the second side plate 17.

[0062] In one embodiment, such as Figures 3 to 6 As shown, the fixed side plate 11 is provided with a first positioning hole 111, the first side plate 12 is provided with a second positioning hole 121, and the second side plate 17 is provided with a third positioning hole 171.

[0063] When the second side plate 17 is folded onto the first side plate 12, and the first side plate 12 is folded onto the fixed side plate 11, the first positioning hole 111, the second positioning hole 121, and the third positioning hole 171 are coaxial and sequentially connected.

[0064] Specifically, the first positioning hole 111, the second positioning hole 121 and the third positioning hole 171 can all be round holes, etc., and the inner diameter and shape of the first positioning hole 111, the second positioning hole 121 and the third positioning hole 171 are the same.

[0065] Specifically, during the assembly of the telescopic mechanism 1, both the first side plate 12 and the second side plate 17 are in a retracted state, and the first positioning hole 111, the second positioning hole 121 and the third positioning hole 171 are coaxial. Positioning pins can be inserted into the first positioning hole 111, the second positioning hole 121 and the third positioning hole 171. During the operation of the telescopic mechanism 1, the positioning pins are removed from the first positioning hole 111, the second positioning hole 121 and the third positioning hole 171.

[0066] When inspecting the telescopic mechanism 1, both the first side plate 12 and the second side plate 17 are in the retracted state. The maintenance personnel can observe the first positioning hole 111, the second positioning hole 121, and the third positioning hole 171. If the maintenance personnel can see light from the other side through the first positioning hole 111, the second positioning hole 121, and the third positioning hole 171, it indicates that the first positioning hole 111, the second positioning hole 121, and the third positioning hole 171 are coaxial or have a slight deviation, and the positional accuracy between the fixed side plate 11, the first side plate 12, and the second side plate 17 is high. If the maintenance personnel cannot see light from the other side through the first positioning hole 111, the second positioning hole 121, and the third positioning hole 171, it indicates that the first positioning hole 111, the second positioning hole 121, and the third positioning hole 171 are not coaxial, and there is a large positional deviation between the fixed side plate 11, the first side plate 12, and the second side plate 17, requiring adjustment of the positional accuracy of the first side plate 12 and the second side plate 17.

[0067] In this embodiment, the design of the first positioning hole 111, the second positioning hole 121 and the third positioning hole 171 facilitates the maintenance of the telescopic mechanism 1.

[0068] In one embodiment, such as Figure 1 As shown, the first side plate 12 is slidably mounted on the fixed side plate 11 along the first direction, and the second side plate 17 is slidably mounted on the first side plate 12 along the first direction;

[0069] The axis of the drive wheel 132 is the second direction, and the axis of the first pulley 161 is the third direction; the first direction, the second direction, and the third direction are perpendicular to each other.

[0070] The first side plate 12 can be mounted above the synchronous belt 134 via the first rack 135, and the second side plate 17 can be mounted on the side of the transmission belt 163 via the second rack 164.

[0071] In this embodiment, the axial direction of the drive wheel 132 is perpendicular to the axial direction of the first pulley 161, which improves the compactness of the telescopic mechanism 1.

[0072] like Figure 7 As shown, another embodiment of the present invention also provides a forklift device, including a base 2, a hooking mechanism 3 and the aforementioned telescopic mechanism 1; the fixed side plate 11 is mounted on the base 2, and the hooking mechanism 3 is mounted on the second side plate 17.

[0073] The fork assembly includes two telescopic mechanisms 1, which are respectively disposed on opposite sides of the base 2, and the two telescopic mechanisms 1 can share a single rotary drive component 131. The hooking mechanism 3 includes, but is not limited to, a hook, a push rod, etc.

[0074] Specifically, when the rotating drive 131 drives the second side plate 17 to extend from the first side of the base 2, the hooking mechanism 3 can hook the item to be hooked (such as a courier package) onto the base 2; when the rotating drive 131 drives the second side plate 17 to extend from the second side of the base 2, the hooking mechanism 3 can push the item to be hooked on the base 2 out.

[0075] In this invention, the forklift device has a large stroke, which can stably hook or push the part to be hooked.

[0076] In one embodiment, such as Figure 7 and Figure 8 As shown, the opposite sides of the base 2 and the fixed side plate 11 are the first side and the second side, respectively; the fork device also includes a first detection element 4, a second detection element 5, a third detection element 6, a fourth detection element 8 and a fifth detection element 7;

[0077] The first detection element 4 is installed on the first side of the fixed side plate 11 and is used to detect whether the first side plate 12 and the second side plate 17 extend out of the fixed side plate 11 from the first side.

[0078] The second detection element 5 is installed on the second side of the fixed side plate 11 and is used to detect whether the first side plate 12 and the second side plate 17 extend out of the fixed side plate 11 from the second side.

[0079] The third detection element 6 is installed on the first side of the base 2 and is used to detect whether there is a hook-up element in front of the base 2;

[0080] The fourth detection element 8 is installed on the second side of the base 2 and is used to detect whether there is a hook-up element behind the base 2.

[0081] The fifth detection element 7 is installed on the base 2 and is used to detect whether there is a hook-up element on the base 2.

[0082] The first side and the second side are the inlet and outlet of the base 2, respectively. The first detection element 4, the second detection element 5, the third detection element 6, the fourth detection element 8, and the fifth detection element 7 include, but are not limited to, reflective photoelectric sensors, through-beam photoelectric sensors, etc. The first detection element 4 includes a first transmitter and a first receiver disposed opposite to the first generator. When the first receiver receives the laser emitted by the first transmitter, it indicates that neither the first side plate 12 nor the second side plate 17 extends from the first side of the fixed side plate 11; when the first receiver does not receive the laser emitted by the first transmitter, it indicates that the first side plate 12 and / or the second side plate 17 extends from the first side of the fixed side plate 11. Similarly, the second detection element 5 includes a second transmitter and a second receiver disposed opposite to the second generator. When the second receiver receives the laser emitted by the second transmitter, it indicates that neither the first side plate 12 nor the second side plate 17 extends from the second side of the fixed side plate 11; when the second receiver does not receive the laser emitted by the second transmitter, it indicates that the first side plate 12 and / or the second side plate 17 extends from the second side of the fixed side plate 11. When the laser emitted by the third detection element 6 is not received by itself, it indicates that there is no object to be hooked in front of the base 2; when the laser emitted by the third detection element 6 is received by itself, it indicates that there is an object to be hooked in front of the base 2. Similarly, if the laser emitted by the fourth detection element 8 is not received by itself, it indicates that there is no object to be hooked behind the base 2; if the laser emitted by the fourth detection element 8 is received by itself, it indicates that there is an object to be hooked behind the base 2; the fifth sensor can be installed in the middle of the base 2.

[0083] In this embodiment, when the first detection element 4 detects that neither the first side plate 12 nor the second side plate 17 extends from the first side of the fixed side plate 11, and the second detection element 5 detects that neither the first side plate 12 nor the second side plate 17 extends from the second side of the fixed side plate 11, it indicates that both the first side plate 12 and the second side plate 17 are retracted onto the fixed side plate 11. Thus, during the movement of the fork device, the first side plate 12 and the second side plate 17 will not collide with external components (such as containers), ensuring the safety of the fork device.

[0084] The third detection element 6 can detect whether there is a hook-up item in front of the base 2. When the third detection element 6 detects that there is a hook-up item in front, the hooking mechanism 3 moves the hook-up item in front onto the base 2. The fourth detection element 8 can detect whether there is a hook-up item in front of the base 2. When the third detection element 6 detects that there is no hook-up item behind, the hooking mechanism 3 moves the hook-up item on the base 2 from the second side to the rear. The fifth detection element 7 detects whether there is a hook-up item on the base 2, and then decides whether the hooking mechanism moves the hook-up item in front onto the base 2, and whether to move the hook-up item on the base 2 to the rear. The design of the third detection element 6, the fourth detection element 8, and the fifth detection element 7 improves the automation level of the forklift device.

[0085] In one embodiment, such as Figure 6 As shown, the hooking mechanism 3 includes a hooking drive 31 and a lever 32. The hooking drive 31 is mounted on the second side plate 17, and the output end of the hooking drive 31 is connected to the lever 32. The hooking drive 31 is used to drive the lever 32 to rotate.

[0086] The hooking drive 31 includes, but is not limited to, a motor, and the hooking drive 31 can drive the lever 32 to be in a horizontal or vertical state.

[0087] When the lever 32 is in a vertical position, the lever 32 can avoid the object to be hooked on the movement path; when the lever 32 is in a horizontal position, the lever 32 can hook or push the object to be hooked on the movement path.

[0088] In this embodiment, the hooking mechanism 3 has a simple structure and low manufacturing cost.

[0089] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A telescoping mechanism, characterized by, It includes a fixed side plate, a first side plate, and a drive assembly, wherein the first side plate is slidably mounted on the fixed side plate; The drive assembly includes a rotary drive component, a drive wheel, a driven wheel, a timing belt, and a first rack mounted on the first side plate; the timing belt has internal teeth and external teeth on opposite sides; the drive wheel and the driven wheel are rotatably mounted on the fixed side plate at intervals, the timing belt is sleeved on the drive wheel and the driven wheel, and the internal teeth mesh with both the drive wheel and the driven wheel, and the external teeth mesh with the first rack; the output end of the rotary drive component is connected to the drive wheel.

2. The telescoping mechanism of claim 1, wherein, The telescopic mechanism further includes a first guide assembly; the first guide assembly includes a first guide rail and a plurality of first guide wheels, the first guide rail is mounted on the fixed side plate, and all the first guide wheels are spaced apart on the first side plate; The first guide rail is provided with a first guide part, and all the first guide wheels are provided with a first rolling groove, and the first guide part is slidably inserted into the first rolling groove.

3. The telescoping mechanism of claim 1, wherein, The telescopic mechanism also includes a plurality of support gears spaced apart on the fixed side plate, all of which mesh with the internal teeth.

4. The telescopic mechanism according to any one of claims 1 to 3, characterized in that The telescopic mechanism further includes a second side plate and a transmission assembly, wherein the second side plate is slidably mounted on the first side plate; The transmission assembly includes a first pulley, a second pulley, a transmission belt, a second rack, and a third rack; the first pulley and the second pulley are rotatably mounted on the first side plate at intervals, and the transmission belt is sleeved on the first pulley and the second pulley; The transmission belt has teeth on the side opposite to the first pulley, the second rack is mounted on the second side plate, and the third rack is mounted on the fixed side plate. Both the second rack and the third rack mesh with the belt teeth.

5. The telescopic mechanism according to claim 4, characterized in that, The telescopic mechanism further includes a second guide assembly; the second guide assembly includes a second guide rail and a plurality of second guide wheels, the second guide rail is mounted on the first side plate, and all the second guide wheels are spaced apart on the second side plate; The second guide rail is provided with a second guide part, and all the second guide wheels are provided with a second rolling groove, and the second guide part is slidably inserted into the second rolling groove.

6. The telescopic mechanism according to claim 4, characterized in that, The fixed side plate is provided with a first positioning hole, the first side plate is provided with a second positioning hole, and the second side plate is provided with a third positioning hole. When the second side plate is folded onto the first side plate, and the first side plate is folded onto the fixed side plate, the first positioning hole, the second positioning hole, and the third positioning hole are coaxial and sequentially connected.

7. The telescopic mechanism according to claim 4, characterized in that, The first side plate is slidably mounted on the fixed side plate along the first direction, and the second side plate is slidably mounted on the first side plate along the first direction. The axis of the drive wheel is the second direction, and the axis of the first pulley is the third direction; the first direction, the second direction, and the third direction are perpendicular to each other.

8. A forklift device, characterized in that, It includes a base, a hooking mechanism, and a telescopic mechanism as described in any one of claims 4 to 7; the fixed side plate is mounted on the base, and the hooking mechanism is mounted on the second side plate.

9. The forklift device according to claim 8, characterized in that, The base and the fixed side plate are respectively the first side and the second side; the fork device also includes a first detection element, a second detection element, a third detection element, a fourth detection element and a fifth detection element; The first detection element is installed on the first side of the fixed side plate and is used to detect whether the first side plate and the second side plate extend out of the fixed side plate from the first side. The second detection element is installed on the second side of the fixed side plate and is used to detect whether the first side plate and the second side plate extend out of the fixed side plate from the second side; The third detection component is installed on the first side of the base and is used to detect whether there is a hook-to-be-picked component in front of the base; The fourth detection component is installed on the second side of the base and is used to detect whether there is a hook-up component behind the base. The fifth detection component is installed on the base and is used to detect whether there is a hook-up component on the base.

10. The forklift device according to claim 8, characterized in that, The hooking mechanism includes a hooking drive and a lever. The hooking drive is mounted on the second side plate, and the output end of the hooking drive is connected to the lever. The hooking drive is used to drive the lever to rotate.

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