Cargo limiting device for forklift and forklift
By designing a forklift cargo limit device that can limit the upper part of the forklift cargo, the problem of difficulty in preventing higher cargo from dumping in the prior art is solved, and the stable limit of higher cargo is achieved, and the stability and safety of cargo is improved.
Patent Information
- Application Number
- CN202420874794.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing cargo limiting device for forklifts is difficult to effectively prevent the goods from dumping when transporting higher goods, mainly because it can only limit the bottom of the goods and cannot effectively stabilize the center of gravity of the goods.
A cargo limiting device for forklifts is designed, which not only includes a bottom limiting mechanism for limiting the bottom of the cargo, but also an upper limiting mechanism for limiting the upper limit of the cargo. The upper limit mechanism can adjust the position of the limit limit plate according to the height of the cargo through the combination of adjustment parts, extension plates and limit plates, ensuring effective limits on the upper part of higher goods.
By limiting the upper part of the cargo, the higher center of gravity of the cargo is effectively stabilized, preventing the cargo from dumping during the transportation process, and improving the stability and safety of the cargo.
Smart Images
Figure CN222684214U_ABST
Abstract
Description
Technical Field
[0001] The utility model generally relates to the technical field of forklift parts, and more specifically, to a cargo limiting device for a forklift and a forklift. Background Art
[0002] A forklift refers to a variety of wheeled special equipment vehicles that load, unload, stack and transport palletized goods over short distances. When transporting goods, it is necessary to use a limiter to limit the goods to prevent the goods from shaking during the movement and transportation of the forklift. The cargo limiter for forklifts in the prior art usually only fixes the bottom of the goods when limiting the position of the goods transported on the forklift, but its scope of use is limited, especially when transporting higher goods. Since the center of gravity of higher goods is higher, when the forklift encounters bumps or emergency braking during movement, it is easy to cause the higher goods to tip over.
[0003] Therefore, how to provide an improved forklift cargo limiting device for limiting and supporting higher cargo so as to prevent the cargo from tipping over due to the higher center of gravity when the forklift is carrying the higher cargo is an urgent problem to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the utility model provides a cargo limiting device for a forklift, which can not only limit the bottom of the cargo, but also limit the upper part of the cargo, thereby effectively ensuring the stability of the cargo (especially higher cargo) during the movement and transportation of the forklift.
[0005] To achieve the above-mentioned purpose, the utility model provides a cargo limiting device for a forklift, comprising: a door frame, a motor is installed at the bottom of the door frame; a fork arm, the fork arm comprises a vertical plate and a horizontal plate connected to each other, and the vertical plate is installed on the front side of the door frame; a bottom limiting mechanism, the bottom limiting mechanism comprises a winding assembly, a traction rope and a limiting bottom plate, wherein the winding assembly is installed to the output end of the motor, the limiting bottom plate is rotatably installed on both sides of the free end of the horizontal plate, one end of the traction rope is installed to the winding assembly, and the other end of the traction rope is connected to the limiting bottom plate; and an upper limiting mechanism, the upper limiting mechanism comprises an adjusting member, an adjusting side plate, an extension plate, a fixed plate, a A positioning carrier plate and two limit mark plates, wherein the adjusting member is inserted into the door frame along the left-right direction, the adjusting side plate is installed on the outer end of the adjusting member, the adjusting side plate is provided with a first slot, the extension plate is slidably installed in the first slot, a fastener for braking the extension plate is installed on one side of the top of the adjusting side plate, the extension plate is provided with a second slot, the bottom of the positioning carrier plate is installed at the bottom of the second slot through a spring, and the positioning carrier plate can slide in the second slot under the action of the spring, the two limit mark plates are respectively installed on the front and rear sides of the positioning carrier plate through a rotating shaft, and are accommodated in the second slot in a closed state.
[0006] Optionally, the cargo limiting device for a forklift also includes an adjusting rod, which is located outside the adjusting member; wherein the upper limiting mechanism also includes a positioning member and a driving rod, and a damping inner cavity is opened inside the adjusting member; the positioning member is slidably installed in the damping inner cavity, and the outer wall of the positioning member contacts the inner wall of the adjusting member; the driving rod is rotatably installed in the positioning member and is threadedly engaged with the positioning member; and the inner end of the adjusting rod is clamped and installed in the driving rod through the adjusting side plate, and a protrusion is installed on the outer end of the adjusting rod, and the adjusting rod is rotated by rotating the protrusion.
[0007] Optionally, there are two upper limiting mechanisms, and the two upper limiting mechanisms are symmetrically arranged along the left-right direction and share one driving rod.
[0008] Optionally, the bottom limiting mechanism also includes a positioning rod and a guide ring, the positioning rod is installed on one side of the cross plate, the guide ring is installed on one side of the fork arm and is located between the winding assembly and the positioning rod, and the other end of the traction rope slides through the guide ring and the positioning rod in sequence and then is connected to the limiting bottom plate.
[0009] Optionally, a power cylinder is installed at the rear end of the bottom of the vertical plate, a guide groove is opened inside the horizontal plate, and balls are inlaid on the horizontal plate. The bottom of the ball is located in the guide groove, and the movable plate is slidably installed in the guide groove. The rear end of the movable plate is connected to the output end of the power cylinder, and fixed plates are provided on both sides of the movable plate. The side surfaces of the fixed plates are arc-shaped structures, and the side surfaces of the fixed plates are slidably installed on the outside of the balls.
[0010] Optionally, the power cylinder is a hydraulic cylinder.
[0011] Optionally, the motor is a servo motor, and / or the fastener is a bolt.
[0012] Optionally, the cargo limiting device for a forklift further comprises a lifting assembly, wherein the door frame is mounted on the front side of the lifting assembly.
[0013] Optionally, there are two fork arms, and the vertical plate is slidably installed on the front side of the door frame; there are two bottom limiting mechanisms, and the two bottom limiting mechanisms are respectively arranged in one-to-one correspondence with the two fork arms, and the other end of the traction rope of one of the bottom limiting mechanisms is in the opposite direction to the other end of the traction rope of the other bottom limiting mechanism.
[0014] In addition, the utility model also provides a forklift, which includes the above-mentioned cargo limiting device for a forklift.
[0015] Compared with the prior art, the cargo limiting device for a forklift provided by the utility model has the following beneficial effects:
[0016] (1) Compared with the forklift cargo limiting device in the prior art which can only fix the bottom of the cargo, the forklift cargo limiting device provided by the utility model can not only limit the bottom of the cargo through the winding assembly, traction rope and limiting bottom plate of the bottom limiting mechanism, but also limit the upper part of the higher cargo through the extension plate and limiting mark plate of the upper limiting mechanism. Therefore, during the handling process of the higher cargo, the stability of the center of gravity of the cargo is ensured, and the higher cargo is effectively prevented from tipping over.
[0017] (2) The cargo limiting device for a forklift provided by the utility model can reduce the friction between the bottom of the cargo and the fork arm during cargo loading and unloading by using the balls embedded in the fork arm, so that the cargo can be moved to the specified position quickly and stably, and the wear on the bottom of the cargo can be reduced; in addition, the movable plate can drive multiple fixed plates on both sides to fix the position of the balls by utilizing the arc structure of the fixed plates, thereby ensuring the stability of the cargo on the fork arm during transportation.
[0018] (3) The cargo limit device for a forklift provided by the utility model can further move the limit plate of the upper limit mechanism outward by a suitable distance through the adjusting rod, the adjusting member, the positioning member and the driving rod, thereby adapting to cargoes of different widths, thereby expanding the application range of the cargo limit device for a forklift. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solution of the present invention, the implementation methods of the present invention will be further illustrated and described based on the following drawings. These drawings are only used to more conveniently and specifically describe the implementation methods of the present invention rather than to limit the present invention.
[0020] Figure 1 is a schematic diagram of the overall structure of a cargo limiting device for a forklift provided according to an exemplary embodiment of the utility model;
[0021] Figure 2 is a schematic diagram of an expanded state of a cargo limiting device for a forklift provided according to an exemplary embodiment of the utility model;
[0022] Figure 3 is a schematic cross-sectional structural diagram of a fork arm provided according to an exemplary embodiment of the utility model;
[0023] Figure 4 is a schematic diagram of a three-dimensional structure of a fork arm and a bottom limiting mechanism provided according to an exemplary embodiment of the utility model;
[0024] Figure 5 is a schematic diagram of the three-dimensional structure of an upper limiting mechanism provided according to an exemplary embodiment of the utility model; and
[0025] Figure 6 It is a schematic cross-sectional structural diagram of an upper limiting mechanism provided according to an exemplary embodiment of the utility model.
[0026] In the figure: 1. door frame; 101. fork arm; 102. guide slide; 103. ball bearing; 104. movable plate; 105. fixed plate; 2. winding assembly; 201. traction rope; 202. limit bottom plate; 203. positioning rod; 204. guide ring; 3. adjusting member; 301. adjusting side plate; 302. extension plate; 303. positioning carrier plate; 304. limit mark plate; 305. damping inner cavity; 306. positioning member; 307. driving rod; 308. adjusting rod; 4. lifting assembly. DETAILED DESCRIPTION
[0027] The utility model provides a cargo limiting device for a forklift, which can not only limit the bottom of the cargo, but also limit the upper part of the cargo, thereby effectively ensuring the stability of the cargo (especially high cargo) during the movement and transportation of the forklift.
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the specific embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. These embodiments are provided by way of example only. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative work are also within the scope of protection claimed by the utility model.
[0029] refer to Figures 1 to 6 , the embodiment of the utility model provides a cargo limiting device for a forklift. Figures 1 to 6 As shown in , the cargo limiting device for a forklift includes a mast 1, a fork arm 101, a bottom limiting mechanism and an upper limiting mechanism. A motor (e.g., a servo motor) is installed at the bottom (e.g., the middle position of the bottom) of the mast 1. The fork arm 101 is an L-shaped structure, which includes a vertical plate and a horizontal plate connected to each other (e.g., integrally connected), and the vertical plate is installed at the front side of the mast 1.
[0030] The bottom limiting mechanism includes a winding assembly 2, a traction rope 201 and a limiting bottom plate 202, wherein the winding assembly 2 is mounted to the output end of the motor. The limiting bottom plate 202 is rotatably mounted on both sides of the free end of the transverse plate. One end of the traction rope 201 is mounted to the winding assembly 2, and the other end of the traction rope 201 is connected to the limiting bottom plate 202. When limiting the cargo carried on the fork arm 101, the cargo is placed on the transverse plate of the fork arm 101, the motor at the bottom of the door frame 1 drives the winding assembly 2 to rotate, the winding assembly 2 drives the traction rope 201 to move, and the traction rope 201 pulls the limiting bottom plate 202 to rotate on both sides of the free end of the transverse plate of the fork arm 101, so that the limiting bottom plate 202 is in a vertical state, so that the limiting bottom plate 202 limits the bottom of the cargo to prevent the cargo from slipping off the transverse plate of the fork arm 101.
[0031] The upper limiting mechanism includes an adjusting member 3, an adjusting side plate 301, an extension plate 302, a positioning carrier plate 303 and two limiting mark plates 304, wherein the adjusting member 3 is inserted in the door frame 1 along the left and right directions. The adjusting side plate 301 is installed at the outer end of the adjusting member 3. The adjusting side plate 301 is provided with a first slot, for example, the cross section of the first slot is T-shaped. The extension plate 302 is slidably installed in the first slot. A fastener (for example, a bolt (specifically, a fixing bolt)) for braking the extension plate 302 is installed on one side of the top of the adjusting side plate 301 to control the extension plate 302 to slide up and down in the first slot. The extension plate 302 is provided with a second slot, for example, the second slot is provided on the upper part of the extension plate 302 and runs through the side of the upper part. The bottom of the positioning carrier plate 303 is installed at the bottom of the second slot through a spring, and the positioning carrier plate 303 can slide in the second slot under the action of the spring. The two limit plates 304 are respectively installed on the front and rear sides of the positioning carrier 303 through the rotating shaft, and are contained in the second slot in the closed state. Therefore, when limiting the high cargo carried on the fork arm 101, the height of the limit plate 304 can be adjusted according to the height of the cargo. Specifically, the extension plate 302 is moved upward in the first slot on the side of the adjustment side plate 301, and the position of the extension plate 302 is fixed by the fixing bolt; the limit plate 304 is released from the second slot, and the positioning carrier 303 is pushed upward in the second slot of the extension plate 302 by the elastic force of the spring in the second slot; then the limit plate 304 is unfolded on both sides of the top of the positioning carrier 303, so that the limit plate 304 is at a suitable height, and then the upper part of the high cargo is limited by the limit plate 304. Therefore, the stability of the center of gravity of the high cargo is ensured, and the high cargo is effectively prevented from tipping over during the transportation process.
[0032] In a preferred embodiment of the utility model, the cargo limiting device for a forklift further includes an adjustment rod 308, and the adjustment rod 308 is located outside the adjustment member 3. The upper limiting mechanism further includes a positioning member 306 and a driving rod 307. A damping inner cavity 305 is provided inside the adjustment member 3; for example, the adjustment member 3 is a hollow cylindrical structure; the limiting protrusion is arranged at the inner end of the adjustment member 3 opposite to the outer end of the adjustment member 3. The positioning member 306 is slidably installed in the damping inner cavity 305, and the outer wall of the positioning member 306 contacts the inner wall of the adjustment member 3. The driving rod 307 is rotatably mounted in the positioning member 306 and is threadedly matched with the positioning member 306; for example, the driving rod 307 may be a screw rod, and the positioning member 306 may be a nut matched with the screw rod, so that the positioning member 306 can be driven to perform linear motion by the rotational motion of the driving rod 307; regarding the implementation method of converting the rotational motion into the linear motion, the present embodiment is not limited thereto, and other conventional implementation methods in the technical field can also be adopted, as long as the rotational motion of the driving rod 307 can be realized to drive the positioning member 306 to perform linear motion. The inner end of the adjusting rod 308 is mounted in the driving rod 307 through the adjusting side plate 301, and a protrusion is installed at the outer end of the adjusting rod 308, and the adjusting rod 308 is rotated by rotating the protrusion. When limiting the position of the goods carried on the fork arm 101, if the width of the goods in the left and right directions is too wide, the limit mark plate 304 cannot be stretched and the upper part of the goods cannot be limited. At this time, the protrusion at the outer end of the adjustment rod 308 can be rotated on one side of the door frame 1 to rotate the adjustment rod 308. The rotating adjustment rod 308 drives the driving rod 307 to rotate, and the rotating driving rod 307 drives the positioning member 306 to move in the damping inner cavity 305 along the length direction of the driving rod 307. During the movement of the positioning member 306, the contact damping (friction force) between the outer wall of the positioning member 306 and the inner wall of the adjusting member 3 is large, so that the positioning member 306 The adjusting member 306 drives the adjusting member 3 and the adjusting side plate 301 at the outer end of the adjusting member 3 to move outwards by a suitable distance, so that the limit plate 304 moves outwards by a suitable distance, thereby better matching the width of the upper part of the cargo, so as to reasonably limit the upper part of the cargo; and the adjusting side plate 301 can also be further toggled to drive the adjusting member 3 to move, so as to use the friction between the positioning member 306 and the inner wall of the adjusting member 3 to adjust the inclination angle of the adjusting side plate 301, so that the adjusting side plate 301 is at a suitable inclination angle, thereby better matching the width of the upper part of the cargo, so as to more firmly limit the upper part of the cargo. That is to say, in this embodiment, through the above-mentioned settings of the adjusting rod, the adjusting member, the positioning member and the driving rod, the limit plate of the upper limit mechanism can be moved outwards by a suitable distance, so that cargoes of various different widths can be limited, thereby enhancing the adaptability to cargoes of different widths, thereby expanding the application range of the cargo limit device for forklifts.
[0033] In a preferred embodiment of the utility model, there are two upper limiting mechanisms, and the two upper limiting mechanisms are symmetrically arranged along the left and right directions, and share a driving rod 307. In this embodiment, by setting the upper limiting mechanisms as two symmetrical upper limiting mechanisms, the upper sides of the goods can be more firmly limited, thereby further avoiding the problem of the dumping of high goods during the handling process. Moreover, the two upper limiting mechanisms share a driving rod 307, that is, a driving rod 307 can simultaneously drive the left and right positioning members 306 to move to the left and right respectively, thereby driving the left and right adjustment side plates 301 to move to the left and right respectively, making the structure simpler and the operation more convenient; as for the implementation method of a driving rod 307 driving the left and right positioning members 306 to move to the left and right respectively, the conventional method in the art can be used to reasonably set the threads of the driving rod 307 and the left and right positioning members 306, so that the rotation of a driving rod 307 can simultaneously drive the left and right positioning members 306 to move to the left and right respectively.
[0034] In a preferred embodiment of the present invention, the bottom limiting mechanism further includes a positioning rod 203 and a guide ring 204. The positioning rod 203 is installed on one side of the horizontal plate; the guide ring 204 is installed on one side of the fork arm 101 and is located between the winding assembly 2 and the positioning rod 203; the other end of the traction rope 201 slides through the guide ring 204 and the positioning rod 203 in sequence and then connects to the limiting bottom plate 202. In this embodiment, the positioning rod 203 and the guide ring 204 can guide the movement of the traction rope 201 well, so that the bottom limiting mechanism can limit the bottom of the cargo more smoothly.
[0035] In a preferred embodiment of the present invention, a power cylinder (for example, a hydraulic cylinder) is installed at the rear end of the bottom of the vertical plate, a guide slot 102 is provided inside the horizontal plate, and a ball 103 is inlaid on the horizontal plate. The ball 103 is a spherical structure, and the bottom of the ball 103 is located in the guide slot 102. The movable plate 104 is slidably installed in the guide slot 102, and the rear end of the movable plate 104 is connected to the output end of the power cylinder. Fixed plates 105 are provided on both sides of the movable plate 104, and the side of the fixed plate 105 is an arc structure, and the side of the fixed plate 105 is slidably installed on the outside of the ball 103. When loading and unloading goods, the spherical ball 103 rolls on the horizontal plate of the fork arm 101, reducing the friction between the bottom of the goods and the fork arm 101, so that the goods are easier to move on the fork arm 101, so that the goods are quickly and stably moved to the designated position, and the wear on the bottom of the goods is reduced. Moreover, the hydraulic cylinder at the rear end of the bottom of the fork arm 101 drives the movable plate 104 to move in the guide groove 102; then, the movable plate 104 drives multiple fixed plates 105 on both sides to fix the position of the ball 103 using the arc structure of the fixed plate 105, thereby ensuring the stability of the goods on the fork arm 101 during transportation.
[0036] In a preferred embodiment of the utility model, the cargo limiting device for a forklift further comprises a lifting assembly 4, wherein the mast 1 is mounted on the front side of the lifting assembly 4. When limiting the cargo carried on the fork arm 101, the lifting assembly 4 drives the mast 1 to move up and down so that the horizontal plate of the fork arm 101 is inserted at the bottom of the cargo.
[0037] In a preferred embodiment of the present invention, there are two fork arms 101, and the vertical plate is slidably installed on the front side of the door frame 1, so that the distance between the two vertical plates can be easily adjusted, so that the fork arms 101 are at a suitable distance on the door frame 1, thereby carrying the goods more stably. There are two bottom limiting mechanisms, and the two bottom limiting mechanisms are respectively set in a one-to-one correspondence with the two fork arms 101, and the other end of the traction rope 201 of one bottom limiting mechanism is in the opposite direction to the other end of the traction rope 201 of the other bottom limiting mechanism. Setting two bottom limiting mechanisms increases the limiting area of the bottom of the goods, thereby further enhancing the firmness of the bottom limit of the goods.
[0038] In addition, a preferred embodiment of the present invention further provides a forklift, which includes the above-mentioned cargo limiting device for a forklift.
[0039] The working principle of the cargo limiting device for a forklift of a preferred embodiment of the utility model is as follows: when in use, the lifting assembly 4 drives the fork arm 101 on the door frame 1 to be inserted into the bottom of the cargo; the ball 103 rolls on the transverse plate of the fork arm 101 to reduce the friction between the fork arm 101 and the bottom of the cargo, and the cargo is pushed onto the fork arm 101 at this time; the hydraulic cylinder at the bottom rear end of the vertical plate of the fork arm 101 drives the movable plate 104 to move inside the guide slide 102, and the movable plate 104 drives the fixed plates 105 on both sides to fix the ball 103, thereby the cargo is The servo motor at the middle position of the bottom of the door frame 1 drives the winding assembly 2 to rotate, and the winding assembly 2 drives the traction rope 201 to slide through the guide ring 204 and the positioning rod 203 in sequence, and then pulls the limiting bottom plate 202 to rotate on both sides of the free end of the horizontal plate of the fork arm 101, so that the limiting bottom plate 202 is in a vertical state, so that the limiting bottom plate 202 limits the bottom of the goods; when carrying higher goods, according to the height of the higher goods being carried, the convex end of the outer end of the adjusting rod 308 is rotated on one side of the door frame 1 The adjusting rod 308 is rotated, and the rotating adjusting rod 308 drives the driving rod 307 to rotate, and the rotating driving rod 307 drives the positioning member 306 to move in the damping inner cavity 305 along the length direction of the driving rod 307; during the movement of the positioning member 306, the contact damping between the outer wall of the positioning member 306 and the inner wall of the adjusting member 3 is relatively large, so that the positioning member 306 drives the adjusting member 3 and the adjusting side plate 301 at the outer end of the adjusting member 3 to move outwards by a suitable distance, thereby making the limit mark plate 304 move outwards by a suitable distance, and then contact with the upper part of the cargo. The width of the side plate 301 is well matched; then, the extension plate 302 is moved upward in the first slot on the side of the adjustment side plate 301, and the position of the extension plate 302 is fixed by the fixing bolts; the limit mark plate 304 is released from the second slot, and the elastic force of the spring in the second slot is used to push the positioning carrier plate 303 to move upward in the second slot of the extension plate 302; then, the limit mark plate 304 is unfolded on both sides of the top of the positioning carrier plate 303, so that the limit mark plate 304 is at a suitable height, and then the limit mark plate 304 is used to limit the upper sides of the higher goods.
[0040] When limiting the position of high cargo carried by the forklift, the cargo limiting device for a forklift of a preferred embodiment of the utility model adjusts the side plate 301, the extension plate 302 and the positioning carrier plate 303, and the two limiting plates 304 are in an unfolded state. The two limiting plates 304 have a larger coverage area after being unfolded, and can limit the positions of both sides of the high cargo, so that the center of gravity of the high cargo is relatively stable, and the stability of the high cargo during transportation is effectively ensured, and the cargo will not fall even in the case of bumps or emergency braking; moreover, the cargo limiting device for a forklift reduces the friction between the fork arm 101 and the bottom of the cargo during cargo loading and unloading by using the balls 103 embedded in the fork arm 101, so that the cargo is quickly and stably moved to the designated position, and the wear on the bottom of the cargo is reduced; the rolling balls prevent the cargo from being greatly offset from the designated position during loading and unloading; after the fixed plate fixes the position of the balls, the stability of the cargo during transportation can be ensured.
[0041] It should be understood that the drawings in the embodiments of the present invention only relate to structures related to the embodiments of the present invention, and other structures can refer to the usual design. The devices and / or structures in the various embodiments provided in the present invention can be combined, modified and / or changed to form new technical solutions. In the absence of creative work, these technical solutions should also be included in the scope of protection claimed by the present invention.
[0042] A large number of specific examples are provided in the embodiments provided herein, and it should be understood that these examples are only for the purpose of describing the embodiments of the present invention in detail and are not intended to limit the present invention. The embodiments of the present invention can be practiced without these specific examples. In some embodiments, structures and / or technologies known to those skilled in the art are not shown in detail so as not to obscure the understanding of the present invention.
[0043] Although preferred embodiments of the present invention have been shown and described herein, it is readily understood by those skilled in the art that these embodiments are provided by way of example only. A variety of changes, modifications, and substitutions will now occur to those skilled in the art without departing from the present invention. It should be understood that the various alternatives to the embodiments of the present invention described herein are optionally used to implement the present invention. It is intended to define the scope of the present invention with the following claims, and thus cover the devices, structures, and equivalents thereof within the scope of these claims.
Claims
1. A cargo limiting device for a forklift, characterized in that: include: A door frame (1), wherein a motor is installed at the bottom of the door frame (1); A fork arm (101), the fork arm (101) comprising a vertical plate and a horizontal plate connected to each other, the vertical plate being mounted on the front side of the door frame (1); a bottom limiting mechanism, the bottom limiting mechanism comprising a winding assembly (2), a traction rope (201) and a limiting bottom plate (202), wherein the winding assembly (2) is mounted to the output end of the motor, the limiting bottom plate (202) is rotatably mounted on both sides of the free end of the transverse plate, one end of the traction rope (201) is mounted to the winding assembly (2), and the other end of the traction rope (201) is connected to the limiting bottom plate (202); and An upper limiting mechanism, the upper limiting mechanism comprises an adjusting member (3), an adjusting side plate (301), an extension plate (302), a positioning carrier plate (303) and two limiting mark plates (304), wherein the adjusting member (3) is inserted into the door frame (1) in the left-right direction, the adjusting side plate (301) is installed at the outer end of the adjusting member (3), the adjusting side plate (301) is provided with a first slot, the extension plate (302) is slidably installed in the first slot, a fastener for braking the extension plate (302) is installed on one side of the top of the adjusting side plate (301), the extension plate (302) is provided with a second slot, the bottom of the positioning carrier plate (303) is installed at the bottom of the second slot through a spring, and under the action of the spring, the positioning carrier plate (303) can slide in the second slot, and the two limiting mark plates (304) are respectively installed on the front and rear sides of the positioning carrier plate (303) through a rotating shaft, and are accommodated in the second slot in a closed state.
2. The cargo limiting device for a forklift according to claim 1, characterized in that: Also includes: an adjusting rod (308), wherein the adjusting rod (308) is located outside the adjusting member (3); The upper limiting mechanism further comprises a positioning member (306) and a driving rod (307), and a damping inner cavity (305) is provided inside the adjusting member (3); The positioning member (306) is slidably mounted in the damping inner cavity (305), and the outer wall of the positioning member (306) is in contact with the inner wall of the adjusting member (3); The driving rod (307) is rotatably mounted in the positioning member (306) and threadably engaged with the positioning member (306); and The inner end of the adjusting rod (308) passes through the adjusting side plate (301) and is installed in the driving rod (307) in a snap-fitting manner, and a protrusion is installed on the outer end of the adjusting rod (308). By rotating the protrusion, the adjusting rod (308) is rotated.
3. The cargo limiting device for a forklift according to claim 2, characterized in that: There are two upper limit mechanisms, and the two upper limit mechanisms are symmetrically arranged along the left-right direction and share one driving rod (307).
4. The cargo limiting device for a forklift according to claim 1, characterized in that: The bottom limiting mechanism also includes a positioning rod (203) and a guide ring (204), wherein the positioning rod (203) is installed on one side of the transverse plate, and the guide ring (204) is installed on one side of the fork arm (101) and is located between the winding assembly (2) and the positioning rod (203), and the other end of the traction rope (201) slides through the guide ring (204) and the positioning rod (203) in sequence and then is connected to the limiting bottom plate (202).
5. The cargo limiting device for a forklift according to claim 1, characterized in that: A power cylinder is installed at the rear end of the bottom of the vertical plate. A guide slot (102) is provided inside the transverse plate, a ball (103) is inlaid on the transverse plate, and the bottom of the ball (103) is located in the guide slot (102). The movable plate (104) is slidably installed in the guide groove (102), the rear end of the movable plate (104) is connected to the output end of the power cylinder, and fixed plates (105) are provided on both sides of the movable plate (104). The side surface of the fixed plate (105) is an arc structure, and the side surface of the fixed plate (105) is slidably installed on the outer side of the ball (103).
6. The cargo limiting device for a forklift according to claim 5, characterized in that: The power cylinder is a hydraulic cylinder.
7. The cargo limiting device for a forklift according to claim 1, characterized in that: The motor is a servo motor, and / or The fastener is a bolt.
8. The cargo limiting device for a forklift according to claim 1, characterized in that: Also includes: A lifting assembly (4), wherein the door frame (1) is installed on the front side of the lifting assembly (4).
9. The cargo limiting device for a forklift according to any one of claims 1 to 8, characterized in that: There are two fork arms (101), and the vertical plate is slidably mounted on the front side of the door frame (1); There are two bottom limiting mechanisms, and the two bottom limiting mechanisms are respectively arranged in one-to-one correspondence with the two fork arms (101), and the other end of the traction rope (201) of one of the bottom limiting mechanisms is in the opposite direction to the other end of the traction rope (201) of the other bottom limiting mechanism.
10. A forklift, characterized in that: The invention comprises the cargo limiting device for a forklift according to any one of claims 1 to 9.