Fork tooth with collision detection function
The fork tip collision detection system with a torsion spring mechanism addresses the issue of damage from unexpected cargo pressure by rotating and recovering, enhancing durability and reducing maintenance costs.
Patent Information
- Application Number
- CN202422131808.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The anti-collision device of the existing forklift fork trunks is easily crushed by cargo when it is subjected to a collision force in front, which increases the cost of use.
A collision detection assembly is designed. By providing a rotating shaft and torsion spring on the fork body, the collision detection assembly can rotate relative to the fork body, and avoid damage through the support and reset function of the torsion spring when it is accidentally subjected to cargo pressure.
It extends the service life of collision detection components, reduces maintenance costs, and is easy to use.
Smart Images
Figure CN223102661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forklift forks, in particular to a fork with collision detection. Background Art
[0002] During the process of forklift cargo handling, the tip of the fork often collides with obstacles, causing damage to the forklift. Therefore, it is necessary to install an anti-collision device at the tip of the fork to brake the forklift in time when an obstacle is detected, avoiding the collision between the tip of the fork and the obstacle.
[0003] However, in the prior art, when the anti-collision device is subjected to a collision force from the front, the push plate inside it slides inward. However, if it is accidentally crushed by the cargo, the entire anti-collision device and the connecting piece with the fork are easily damaged, increasing the use cost. Summary of the Utility Model
[0004] The utility model provides a fork with collision detection. The collision detection component can rotate relative to the fork body, preventing the collision detection device from being crushed by the cargo, extending the service life of the entire collision detection component, and resetting the collision detection component through a torsion spring arranged outside, which is convenient to use.
[0005] To achieve the above object, the utility model adopts the following technical solutions:
[0006] A fork with collision detection includes a fork body and a collision detection component. An installation plate is connected to the lower side wall of the front end part of the fork body. A rotating shaft is arranged on the installation plate along the width direction of the fork body. The collision detection component is arranged along the length direction of the fork body, with one end rotatably arranged on the rotating shaft and the other end located on the front side of the fork body;
[0007] A torsion spring is arranged on the rotating shaft between the collision detection component and the installation plate. The torsion spring has a first abutting part and a second abutting part. The first abutting part abuts against the installation plate, and the second abutting part is located on the lower side wall of the collision detection component and abuts against it.
[0008] Preferably, the collision detection component includes a collision plate, an installation box, a push plate, an elastic member and a detection member. The second abutting part is located below the installation box and abuts against it;
[0009] The installation box is arranged along the width direction of the fork body and has an inner cavity. The end close to the rotating shaft is rotatably connected to the rotating shaft, and a first sliding hole communicating with the inner cavity is provided on the side wall far from the rotating shaft;
[0010] One end of the push plate far from the rotating shaft is located outside the installation box and is connected to the collision plate, and the end close to the rotating shaft passes through the first sliding hole and is located in the inner cavity of the installation box;
[0011] The above elastic member is arranged on the above push plate along the sliding direction of the above push plate. A stop block is arranged in the above mounting box, and the stop block is used in cooperation with the above elastic member;
[0012] The above detection member is arranged in the inner cavity of the above mounting box and is used to detect the sliding of the above push plate so as to send a braking signal to release the above fork tooth body.
[0013] Preferably, the above collision plate includes a first collision plate and a second collision plate;
[0014] The above push plate is connected to the above first collision plate, and the above first collision plate is located on the front side of the above fork tooth body;
[0015] The above first collision plate is arranged in a U-shaped structure, and the above second collision plate is connected to the upper end of the above first collision plate.
[0016] Preferably, mounting holes are provided on the above push plate, and mounting blocks are arranged on both side walls of the above mounting holes that are oppositely arranged along the sliding direction of the above push plate. Both ends of the above elastic member are respectively sleeved on the two above mounting blocks.
[0017] Preferably, the above stop block is arranged in the inner cavity of the above mounting box along the width direction of the above fork tooth body, and both side walls of the above stop block are connected to both side walls of the inner cavity of the above mounting box;
[0018] The above stop block is provided with a second sliding hole, and the end of the above push plate close to the above rotating shaft is slidably arranged on the above second sliding hole;
[0019] Both the upper and lower side walls of the above elastic member protrude from the above mounting hole, and the outer side wall of the above push plate is in clearance fit with the above second sliding hole for sliding. The end of the above elastic member close to the above stop block is used in cooperation with the end face of the above stop block.
[0020] Preferably, a limiting block is arranged on the upper end face of the above push plate, and the limiting block is used in cooperation with the inner side wall of the above mounting box far from the above rotating shaft to limit the above push plate.
[0021] Preferably, a placing through groove is provided on the lower side wall of the above mounting box along the width of the above fork tooth body, and the above second abutting portion is arranged in the above placing through groove.
[0022] Preferably, a first buffer block is provided on the upper side wall of the above mounting box.
[0023] Preferably, a second buffer block is provided outside the side wall of the above mounting box far from the above rotating shaft
[0024] Preferably, a sleeve is arranged on the outer side wall of the above mounting box close to the above rotating shaft, and the sleeve is sleeved outside the above rotating shaft.
[0025] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0026] By arranging the torsion spring and the rotating shaft, the whole collision detection component is rotatably installed on the fork tooth body, and the whole collision detection component is supported by the second abutting part of the torsion spring, so that the collision detection component can not only normally perform the front collision detection, but also can unload the pressure by rotating when accidentally receiving the downward pressure of the goods, avoiding being crushed, prolonging the service life, and after the external force is withdrawn, it can return to the original position through the torsion spring, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0028] Figure 1 Schematic diagram of the fork teeth of the embodiment in the present utility model;
[0029] Figure 2 Schematic diagram of the installation of the collision detection component in the embodiment of the present utility model;
[0030] Figure 3 Schematic diagram of the connection between the collision detection component, the mounting plate, the rotating shaft and the torsion spring in the embodiment of the present utility model Figure 1 ;
[0031] Figure 4 Schematic diagram of the connection between the collision detection component, the mounting plate, the rotating shaft and the torsion spring in the embodiment of the present utility model Figure 2 ;
[0032] Figure 5 Schematic diagram of the components inside the installation box in the embodiment of the present utility model;
[0033] Figure 6 Schematic diagram of the push plate in the embodiment of the present utility model.
[0034] Description of the reference numerals:
[0035] 1. Fork tooth body; 2. Mounting plate; 3. Rotating shaft; 4. Torsion spring; 41. First abutting part; 42. Second abutting part; 5. Collision detection component; 51. Installation box; 511. Placing through groove; 52. Collision plate; 521. First collision plate; 522. Second collision plate; 53. Push plate; 531. Installation hole; 532. Installation block; 54. Elastic member; 55. Detection member; 56. Stopper; 57. Limiting block; 6. Sleeve; 7. First buffer block; 8. Second buffer block. Detailed implementation mode
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0039] As Figures 1-6 shown, the embodiment of the present utility model provides a fork tooth with collision detection, including a fork tooth body 1 and a collision detection component 5. The collision detection component 5 is installed at the front end of the fork tooth body 1 and is used to detect whether an obstacle is collided in front of the fork tooth body 1. If an obstacle is detected directly in front, the forklift is braked in time to avoid the tip of the fork tooth body 1 from colliding with the obstacle. However, the current anti-collision detection component detects obstacles directly in front. If the collision detection component 5 accidentally encounters the situation of the goods being squeezed, the pressure of the goods will act on the entire collision detection component 5, and then act on the connecting piece between the collision detection component 5 and the fork tooth body 1, which is likely to cause damage to the connecting piece. Therefore, to solve the above problems, the collision detection component 5 can rotate relative to the fork tooth body 1. Specifically, as Figures 2-4As shown in the figure, a mounting plate 2 is connected to the lower side wall of the front end of the fork tooth body 1. A rotating shaft 3 is provided on the mounting plate 2 along the width direction of the fork tooth body 1. The collision detection component 5 is arranged along the length direction of the fork tooth body 1. One end is rotatably arranged on the rotating shaft 3, and the other end is located on the front side of the fork tooth body 1. Thus, the collision detection component 5 can rotate downward relative to the rotating shaft 3. Correspondingly, after the pressure is withdrawn, in order for the entire collision detection component 5 to be restored, a torsion spring 4 is provided on the rotating shaft 3 between the collision detection component 5 and the mounting plate 2. The torsion spring 4 has a first abutting portion 41 and a second abutting portion 42. The first abutting portion 41 abuts against the mounting plate 2, and the second abutting portion 42 is located on the lower side wall of the collision detection component 5 and abuts against it, thus playing a supporting role. When the collision detection component 5 rotates downward around the rotating shaft 3 under the pressure of external goods, the torsion spring 4 has a force. After the pressure of the goods is withdrawn, the force of the torsion spring 4 causes the collision detection component 5 to rotate in the reverse direction and return to its original position. Thus, under the action of the torsion spring 4 and the rotating shaft 3, it can be avoided that during the detection process, the collision detection component 5 is accidentally subjected to the downward pressure of the goods, resulting in damage to the connecting piece between the collision detection component 5 and the fork tooth body 1. The service life of the entire collision detection component 5 can be increased, and at the same time, the maintenance cost can be reduced. Specifically, there is a fixing ear at each end of the mounting plate 2 arranged along the width direction of the fork tooth body 1, and both ends of the rotating shaft 3 are installed on the two fixing ears.
[0040] Specifically, as Figures 3-6As shown in the figure, the collision detection component 5 includes a collision plate 52, a mounting box 51, a push plate 53, an elastic member 54, and a detection member 55. The mounting box 51 is arranged along the width direction of the fork tooth body 1 and has an inner cavity. The end close to the rotating shaft 3 is rotatably connected to the rotating shaft 3. A first sliding hole communicating with the inner cavity is provided on a side wall away from the rotating shaft 3. One end of the push plate 53 away from the rotating shaft 3 is located outside the mounting box 51 and is connected to the collision plate 52. One end close to the rotating shaft 3 passes through the first sliding hole and is located in the inner cavity of the mounting box 51. Correspondingly, the elastic member 54 is arranged on the push plate 53 along the sliding direction of the push plate 53. A stop block 56 is arranged in the mounting box 51 and is used in cooperation with the elastic member 54. The detection member 55 is arranged in the inner cavity of the mounting box 51 and is used to detect the sliding of the push plate 53 to send a braking signal to the fork tooth body 1. Specifically, the working principle is as follows. When the fork tooth body 1 moves and encounters an obstacle, the obstacle will come into contact with the frontmost collision plate 52. The movement of the collision plate 52 will push the push plate 53 to slide along the first sliding hole. The push plate 53 slides close to the detection member 55. When the detection member 55 detects that the push plate 53 is close to a certain distance, it will send a signal to the controller of the forklift to brake the forklift. At the same time, when the push plate 53 moves, the elastic member 54 will come into contact with the baffle, and the elastic member 54 will be compressed. After the external obstacle no longer acts on the collision plate 52, under the action of the elastic member 54, the push plate 53 will slide in the opposite direction along the first sliding hole, driving the collision plate 52 to return to its original position. The second abutting portion 42 of the torsion spring 4 is located below the mounting box 51 and abuts against it, used to support the mounting box 51, thereby supporting the entire collision detection component 5, so that the entire collision detection component 5 is stably located directly below the front end of the fork tooth body 1. Specifically, the detection member 55 can be a proximity switch, and the elastic member 54 can be a spring.
[0041] Specifically, in this embodiment, a sleeve 6 is integrally provided on the outer side wall of the mounting box 51 close to the rotating shaft 3. The sleeve 6 is sleeved outside the rotating shaft 3, so that the mounting box 51 is connected to the rotating shaft 3, and there is no need to drill holes in the mounting box 51 for connection, which is more convenient. Moreover, the mounting box 51 includes a box body and a box cover. The box cover includes an upper box cover and a rear box cover, which are set in an L shape and integrally formed, and the sleeve 6 is fixedly installed on the rear box cover.
[0042] Specifically, the collision plate 52 includes a first collision plate 521 and a second collision plate 522. The push plate 53 is connected to the first collision plate 521. The first collision plate 521 is located on the front side of the fork tooth body 1. Preferably, the first collision plate 521 is set in a U-shaped structure. The second collision plate 522 is connected to the upper end of the first collision plate 521, so that the second collision plate 522 forms an upper collision surface, and the U-shaped support surface at the upper end of the first collision plate 521 has a better support effect on the second collision plate 522 and is more durable.
[0043] Specifically, the push plate 53 is provided with mounting holes 531. Mounting blocks 532 are arranged on both side walls of the mounting holes 531 that are oppositely arranged along the sliding direction of the push plate 53. Both end portions of the elastic member 54 are respectively sleeved on the two mounting blocks 532, so that most of the elastic member 54 is located within the mounting holes 531, which can, to a certain extent, reduce the longitudinal mounting space of the elastic member 54 and the internal space.
[0044] Specifically, the stopper 56 is arranged in the inner cavity of the mounting box 51 along the width direction of the fork tooth body 1. Both side walls of the stopper 56 are connected to and integrally provided with the two side walls of the inner cavity of the mounting box 51, and the inner cavity of the mounting box 51 is divided into two parts. The elastic member 54 is located in the part of the inner cavity of the mounting box 51 away from the rotating shaft 3, and the detecting member 55 is located in the part of the inner cavity of the mounting box 51 close to the rotating shaft 3. Correspondingly, the stopper 56 is provided with a second sliding hole. The end portion of the push plate 53 close to the rotating shaft 3 passes through the second sliding hole. Both the first sliding hole and the second sliding hole are adapted to the mounting dimension of the push plate 53. Thus, when sliding, the push plate 53 slides along the first sliding hole and the second sliding hole together, and the process is more stable. Correspondingly, both the upper and lower side walls of the elastic member 54 protrude from the mounting hole 531, and the end portion of the push plate 53 close to the rotating shaft 3 is slidably arranged on the second sliding hole. When an external force presses the collision plate 52, the push plate 53 slides towards the end portion close to the rotating shaft 3, and the elastic member 54 will be blocked by the end face of the stopper 56, so that the elastic member 54 is compressed. When the external force is withdrawn, the acting force of the elastic member 54 causes the push plate 53 to return to its original position.
[0045] Specifically, in order to prevent the push plate 53 from sliding too far outside the first sliding hole under the action of the elastic member 54, a limiting block 57 is arranged on the upper end face of the push plate 53. The limiting block 57 is used in cooperation with the inner side wall of the mounting box 51 away from the rotating shaft 3. By contacting the inner side wall of the mounting box 51 through the limiting block 57, the outward sliding of the push plate 53 is blocked to limit the push plate 53. Preferably, there are two limiting plates, which are respectively located on both sides of the mounting hole 531 along the width direction of the fork tooth body 1. Moreover, the length of the mounting hole 531 along the length direction of the fork tooth body 1 is consistent with the distance between the baffle and the inner side wall of the mounting box 51, making the installation space of the entire spring more compact. Moreover, as soon as the collision plate 52 receives the acting force of an external obstacle, it will push the push plate 53, and the elastic member 54 will be compressed, and the reset effect is better.
[0046] Specifically, in order to make the supporting effect of the second abutting portion 42 better, a placing through groove 511 is provided on the lower side wall of the mounting box 51 and arranged along the width of the fork tooth body 1. The second abutting portion 42 is located in the placing through groove 511, which not only plays a supporting role but also limits the supporting position. When the mounting box 51 rotates downward, it avoids relative sliding between the supporting point between the second abutting portion 42 and the lower side wall of the mounting box 51 and the lower side wall of the mounting box 51, resulting in poor supporting effect and return effect of the entire torsion spring 4. The above-mentioned second abutting portion 42 is located in the placing through groove 511. On the one hand, the supportability is better. On the other hand, when the mounting box 51 rotates downward, the mounting box 51 will cause the second abutting portion 42 to rotate, and the supporting position does not change, making the torsion force stored in the entire torsion spring 4 greater, and at the same time the supporting force is also greater. After the external pressure is withdrawn, under the action of the torsion spring 4, the entire mounting box 51 can return to its original position more quickly. Preferably, a first buffer block 7 is provided on the upper side wall of the mounting box 51, which can be made of rubber material. When the mounting box 51 rotates upward under the action of the torsion spring 4 and collides with the lower side wall of the fork tooth body 1, it will be buffered by the first buffer block 7, making the collision sound smaller and reducing the wear caused by the collision between the two.
[0047] Specifically, a second buffer block 8 is provided on the outer side wall of the mounting box 51 away from the rotating shaft 3, which can be made of rubber material. When the collision plate 52 is under an external force, the inner side wall of the first collision plate 521 will contact the second buffer block 8, thereby reducing the collision sound and the wear caused by the collision between the two.
[0048] The above-mentioned embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.
Claims
1. A fork tooth with collision detection, characterized in that, It includes a fork tooth body and a collision detection component. A mounting plate is connected to the lower side wall of the front end part of the fork tooth body. A rotating shaft is provided on the mounting plate along the width direction of the fork tooth body. The collision detection component is arranged along the length direction of the fork tooth body, with one end rotatably arranged on the rotating shaft and the other end located on the front side of the fork tooth body. A torsion spring is provided on the rotating shaft between the collision detection component and the mounting plate. The torsion spring has a first abutting part and a second abutting part. The first abutting part abuts against the mounting plate, and the second abutting part is located on the lower side wall of the collision detection component and abuts against it.
2. The fork teeth with collision detection according to claim 1, characterized in that, The collision detection component includes a mounting box, a collision plate, a push plate, an elastic member, and a detection member. The second abutting part is located below the mounting box and abuts against it. The mounting box is arranged along the width direction of the fork tooth body and has an inner cavity. The end close to the rotating shaft is rotatably connected to the rotating shaft, and a first sliding hole communicating with the inner cavity is provided on the side wall far from the rotating shaft. One end of the push plate far from the rotating shaft is located outside the mounting box and is connected to the collision plate. One end close to the rotating shaft passes through the first sliding hole and is located in the inner cavity of the mounting box. The elastic member is arranged on the push plate along the sliding direction of the push plate. A stop block is arranged in the mounting box, and the stop block is used in cooperation with the elastic member. The detection member is arranged in the inner cavity of the mounting box and is used to detect the sliding of the push plate to release a braking signal to the fork tooth body.
3. The fork teeth with collision detection according to claim 2, characterized in that, The collision plate includes a first collision plate and a second collision plate. The push plate is connected to the first collision plate, and the first collision plate is located on the front side of the fork tooth body. The first collision plate is arranged in a U-shaped structure, and the second collision plate is connected to the upper end of the first collision plate.
4. The fork teeth with collision detection according to claim 2, characterized in that, Mounting holes are provided on the push plate. Mounting blocks are provided on both side walls of the mounting holes arranged oppositely along the sliding direction of the push plate. Both ends of the elastic member are respectively sleeved on the two mounting blocks.
5. The fork teeth with collision detection according to claim 4, characterized in that, The stop block is arranged in the inner cavity of the mounting box along the width direction of the fork tooth body, and both side walls of the stop block are connected to the two side walls of the inner cavity of the mounting box. The stop block is provided with a second sliding hole, and the end of the push plate close to the rotating shaft slides on the second sliding hole. Both the upper and lower side walls of the elastic member protrude from the mounting hole, and the end of the elastic member close to the stop block is used in cooperation with the end face of the stop block.
6. The fork teeth with collision detection according to claim 2, characterized in that, A limiting block is provided on the upper end face of the push plate, and the limiting block is used in cooperation with the inner side wall of the mounting box far from the rotating shaft to limit the push plate.
7. The fork teeth with collision detection according to claim 2, characterized in that, A placement through groove is provided on the lower side wall of the mounting box along the width of the fork tooth body, and the second abutting part is arranged in the placement through groove.
8. The fork teeth with collision detection according to claim 2, characterized in that, A first buffer block is provided on the upper side wall of the mounting box.
9. The fork teeth with collision detection according to claim 2, characterized in that, A second buffer block is provided on the outer side wall of the mounting box far from the rotating shaft.
10. The fork teeth with collision detection according to claim 2, characterized in that, A sleeve is provided on the outer side wall of the mounting box close to the rotating shaft, and the sleeve is sleeved outside the rotating shaft.