An adjustable spacing telescopic fork mechanism
By designing adjustment and protection components driven by threaded rods and servo motors, the problems of inflexible control and lack of protection in telescopic fork spacing are solved. This enables precise adjustment of fork spacing and quick installation and removal of protection components, improving the flexibility and protection performance of the forks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO RENBA INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-02
AI Technical Summary
The existing telescopic fork mechanism cannot quickly control the spacing, resulting in insufficient flexibility and a lack of protective measures, which can easily lead to external objects entering the parts and causing jamming or uneven rotation.
By combining a threaded rod and a servo motor in the adjustment assembly, the movement of the connecting block is controlled by the rotation of the threaded rod driven by the motor. Combined with the sliding groove and sliding telescopic plate of the protective assembly, precise adjustment of the fork spacing and dynamic protection can be achieved.
It enables precise control of fork spacing and quick installation and removal of protective components, improving the flexibility and protective effect of the forks and avoiding the risk of items entering the parts.
Smart Images

Figure CN224313198U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of telescopic fork technology, and in particular to a telescopic fork mechanism with adjustable spacing. Background Technology
[0002] Telescopic forks are a special type of forklift accessory. Unlike ordinary forks, they can extend or retract to accommodate goods of different sizes and weights. Telescopic forks are controlled by hydraulic or mechanical systems, allowing the forklift to handle goods of varying sizes without changing the forks. The main features and advantages of telescopic forks include flexibility; because the forks can extend and retract, they can handle goods of various sizes, improving the forklift's versatility and efficiency, reducing fork-changing operations, and decreasing loading and unloading time, thereby enhancing the efficiency of logistics operations.
[0003] The applicant discovered through a search that a Chinese patent discloses "A locking mechanism for adjustable-pitch forks," with publication (announcement) number "CN210505436U." This patent mainly uses a locking mechanism to fix the position between the forks and the fork support rod after the fork pitch is adjusted, further fixing the axial pitch of the forks. This prevents the forks from becoming unstable due to changes in the axial pitch during transport when the cargo is too large. However, this patent cannot quickly control the pitch between telescopic forks or adjust the offset distance between them. It is relatively rigid and inflexible, and lacks protective measures, making it easy for external objects to enter the parts, causing them to jam or rotate unevenly during operation. Therefore, we propose an adjustable-pitch telescopic fork mechanism. Utility Model Content
[0004] The purpose of this utility model is to provide an adjustable spacing telescopic fork mechanism to solve the problems mentioned in the background art, such as the inability to quickly control the spacing between telescopic forks and the inability to adjust the offset distance between telescopic forks, which are relatively rigid, inflexible, and lack of protective items, making it easy for external objects to enter the parts, causing the parts to get stuck and rotate unevenly during operation.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable-spacing telescopic fork mechanism, comprising a telescopic fork mechanism body, wherein an adjustment component and a protective component are respectively provided on the telescopic fork mechanism body, the adjustment component includes two sets of threaded rods, both ends of the two sets of threaded rods are detachably connected to limit plates, and the ends of the two sets of limit plates near the protective component are detachably connected to a servo motor, a connecting block is threadedly connected to the threaded rod, an N-type plate is inserted into the connecting block, and an insertion groove is provided on one side of the connecting block, threaded holes are provided in the connecting block and the N-type plate, and one end of the connecting block is fixedly installed on the telescopic fork mechanism body.
[0006] As a preferred embodiment, the telescopic fork mechanism has two sets of elastic rods detachably connected to its main body.
[0007] As a preferred embodiment, one side of the N-shaped plate is attached to the protective assembly, and a limiting rod is also attached to the N-shaped plate. A baffle is fixedly installed at one end of the limiting rod, and a pull rod is fixedly installed at one end of the baffle.
[0008] As a preferred embodiment, the baffle is slidably connected within the protective assembly, and the protective assembly is provided with a placement groove, a limiting groove and a sliding groove, with the baffle slidably connected within the sliding groove.
[0009] As a preferred embodiment, the protective component includes a protective rod with a sliding groove inside. A first telescopic plate and a second telescopic plate are slidably connected in the sliding groove. One end of the first telescopic plate and the second telescopic plate are snapped into the interior of a connecting block, and the other end is detachably connected to the inside of the protective rod.
[0010] As a preferred embodiment, a mounting block is fixedly installed at one end of the protective rod.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] 1. By combining two sets of threaded rods and two sets of servo motors in the set adjustment component, the threaded rods can be rotated by the motors, so that the connecting block and the N-type plate can move linearly along the threaded rods. Since one end of the connecting block is fixed on the main body of the telescopic fork mechanism, the fork spacing can be precisely controlled, and it will extend and retract along with the telescopic fork when the spacing is adjusted. The connecting block and the N-type plate are connected by threaded holes. These designs facilitate the installation, disassembly and maintenance of parts, and facilitate the quick control of the size of the telescopic fork spacing and the position of movement.
[0013] 2. Through the set protective components, the sliding groove inside the protective rod, together with the sliding first and second telescopic plates, can dynamically change the protection range according to the fork spacing. One end of the first and second telescopic plates is snapped into the connecting block, and the other end is detachably connected to the protective rod. When adjusting the fork spacing, the telescopic plates move synchronously with the connecting block. The mounting block fixedly installed at one end of the protective rod provides a standardized installation interface for the protective components, which can be quickly installed on the fork mechanism body or other equipment. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a front sectional view of the present invention;
[0016] Figure 3 This is a view of the overall parts of this utility model;
[0017] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point B
[0018] Figure 5 This is a view of the overall parts of this utility model;
[0019] Figure 6 For the present utility model Figure 5 An enlarged schematic diagram of the structure at point A.
[0020] In the diagram: 1. Main body of the telescopic fork mechanism; 2. Adjustment component; 201. Elastic rod; 202. Placement slot; 203. Servo motor; 204. Connecting block; 205. Limiting plate; 206. Threaded rod; 207. Threaded hole; 208. N-type plate; 209. Baffle; 210. Limiting rod; 211. Pull rod; 212. Limiting slot; 213. Sliding slot; 214. Insertion slot; 3. Protective component; 301. Protective rod; 302. Mounting block; 303. Sliding slot; 304. First telescopic plate; 305. Second telescopic plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see the appendix Figure 1 - Appendix Figure 6An adjustable-spacing telescopic fork mechanism includes a telescopic fork mechanism body 1. An adjustment component 2 and a protective component 3 are respectively provided on the telescopic fork mechanism body 1. The adjustment component 2 includes two sets of threaded rods 206. Both ends of the two sets of threaded rods 206 can be detachably connected to limit plates 205. A servo motor 203 is detachably connected to one end of the two sets of limit plates 205 near the protective component 3. A connecting block 204 is threadedly connected to the threaded rod 206. An N-type plate 208 is inserted into the connecting block 204. An insertion groove 214 is opened on one side of the connecting block 204. Threaded holes 207 are opened in the connecting block 204 and the N-type plate 208. One end of the connecting block 204 is fixedly installed on the telescopic fork mechanism body 1.
[0023] When the operator needs to adjust the fork spacing, the servo motor 203 is started, which drives the threaded rod 206 to rotate. Since the connecting block 204 is threadedly connected to the threaded rod 206, the connecting block 204 will move linearly along the threaded rod 206, causing the N-type plate 208 and the telescopic plate of the protective component 3 connected to it to move synchronously. When the servo motor 203 is working, the four sets of limit plates 205 prevent the parts on the threaded rod 206 from rotating out. Then, the N-type plate 208 is inserted into the insertion slot 214 of the connecting block 204, and the threaded rod 206 is fastened by passing through the threaded hole 207 of the connecting block 204 and the N-type plate 208.
[0024] Two sets of elastic rods 201 are detachably connected to the main body 1 of the telescopic fork mechanism.
[0025] The two sets of elastic rods 201 work together to reduce the distance between the telescopic forks as the fork spacing increases or decreases, and they are flexible.
[0026] One side of the N-type plate 208 is attached to the protective assembly 3, and a limiting rod 210 is also attached to the N-type plate 208. A baffle 209 is fixedly installed at one end of the limiting rod 210, and a pull rod 211 is fixedly installed at one end of the baffle 209.
[0027] When the adjustment component 2 is running, the connecting block 204 drives the N-type plate 208 to move along the rotation direction of the threaded rod 206. Since the N-type plate 208 is in close contact with a part in the protective component 3 and the limiting rod 210, the N-type plate 208 will move with the connecting block 204.
[0028] The baffle 209 is slidably connected to the protective component 3. The protective component 3 is provided with a placement groove 202, a limiting groove 212 and a sliding groove 213 respectively, and the baffle 209 is slidably connected in the sliding groove 213.
[0029] The sliding groove 213 of the protective component 3 allows the baffle 209 to slide within the sliding groove 213 when the lever 211 is pulled.
[0030] Specifically, the servo motor 203 is started, and the output shaft of the servo motor 203 drives the threaded rod 206 and the limiting plate 205 to start rotating. Since the connecting block 204 and the N-type plate 208 are threadedly engaged with the threaded rod 206 and the N-type plate 208 is snapped into the connecting block 204, the connecting block 204 and the N-type plate 208 move linearly along the axial direction of the threaded rod 206. During this process, the limiting plates 205 at both ends of the threaded rod 206 play a role in preventing the parts on the threaded rod 206 from moving axially, ensuring that the connecting block 204 moves smoothly. Pulling the pull rod 211 drives the baffle 209 to slide in the sliding groove 213. When the baffle 209 slides to the end of the limiting groove 212, the snapping structure of the N-type plate 208 and the protective component 3 is completely separated, which facilitates the replacement of damaged parts.
[0031] Please see the appendix Figure 2 Follow Figure 3 The protective component 3 includes a protective rod 301. A sliding groove 303 is provided inside the protective rod 301. A first telescopic plate 304 and a second telescopic plate 305 are slidably connected in the sliding groove 303. One end of the first telescopic plate 304 and the second telescopic plate 305 are snapped into the inside of the connecting block 204, and the other end is detachably connected to the protective rod 301. An installation block 302 is fixedly installed on one end of the protective rod 301. The installation block 302 is easy to disassemble and install with other items.
[0032] When the adjustment component 2 is in operation, it pushes the first telescopic plate 304 and the second telescopic plate 305 to slide in the sliding groove 303, so that the protection range is automatically adjusted according to the fork spacing. The protective rod 301 is the protective part of the whole part excluding the main body.
[0033] Specifically, when the adjustment component 2 is in operation, the first telescopic plate 304 and the second telescopic plate 305 fixed on both sides of the two sets of connecting blocks 204 will move and extend with the connecting block 204. During the extension and retraction, they slide in the sliding groove 303 opened in the guard rod 301. The mounting block 302 can be adjusted according to the installation specifications of different models to adapt to items of different sizes.
[0034] Working principle of this utility model: This utility model is a telescopic fork mechanism with adjustable spacing. First, when the servo motor 203 is started, the torque generated by the rotation of the servo motor 203 is transmitted to the threaded rod 206. The connecting block 204, which is threaded on the threaded rod 206, moves axially along the threaded rod 206 due to the action of the thread. The connecting block 204 is connected to the N-type plate 208 through the insertion groove 214 and the threaded hole 207, thereby driving the N-type plate 208 to move synchronously, realizing precise adjustment of the fork spacing. The limiting plate 205 restricts the axial movement of the parts on the threaded rod 206, ensuring the smooth movement of the connecting block 204. Pulling the pull rod 211 moves the baffle 209 in the sliding groove 213. The inner sliding mechanism, via the limiting rod 210, slides within the protective rod 301, thus providing a limiting effect. Pushing the pull rod 211 in the opposite direction allows the baffle 209 to reset. The mounting block 302 at one end of the protective rod adopts a quick-release design, further improving the efficiency of disassembly and assembly of the protective component 3, enabling its removal. One end of the first telescopic plate 304 and the second telescopic plate 305 in the protective component 3 are engaged with the connecting block 204, and the other end is connected within the placement slot 202 of the protective rod 301. When the connecting block 204 and the N-shaped plate 208 move to adjust the fork spacing, the telescopic plates are driven by the connecting block to extend or retract within the sliding groove 303, causing the protection range to change synchronously with the fork spacing, thus always providing effective protection for the goods.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable-pitch telescopic fork mechanism, comprising a telescopic fork mechanism body (1), characterized in that: The telescopic fork mechanism body (1) is provided with an adjustment component (2) and a protective component (3). The adjustment component (2) includes two sets of threaded rods (206). Both ends of the two sets of threaded rods (206) can be detachably connected to limit plates (205). The end of the two sets of limit plates (205) near the protective component (3) is detachably connected to a servo motor (203). A connecting block (204) is threaded on the threaded rod (206). An N-type plate (208) is inserted into the connecting block (204). An insertion slot (214) is opened on one side of the connecting block (204). Threaded holes (207) are opened in the connecting block (204) and the N-type plate (208). One end of the connecting block (204) is fixedly installed on the telescopic fork mechanism body (1).
2. The adjustable-spacing telescopic fork mechanism according to claim 1, characterized in that: Two sets of elastic rods (201) are detachably connected to the main body (1) of the telescopic fork mechanism.
3. The adjustable-spacing telescopic fork mechanism according to claim 1, characterized in that: One side of the N-shaped plate (208) is attached to the protective assembly (3), and a limiting rod (210) is also attached to the N-shaped plate (208). A baffle (209) is fixedly installed at one end of the limiting rod (210), and a pull rod (211) is fixedly installed at one end of the baffle (209).
4. The adjustable-spacing telescopic fork mechanism according to claim 3, characterized in that: The baffle (209) is slidably connected to the protective component (3). The protective component (3) is provided with a placement groove (202), a limiting groove (212) and a sliding groove (213), and the baffle (209) is slidably connected to the sliding groove (213).
5. The adjustable-spacing telescopic fork mechanism according to claim 1, characterized in that: The protective component (3) includes a protective rod (301), and a sliding groove (303) is provided in the protective rod (301). A first telescopic plate (304) and a second telescopic plate (305) are slidably connected in the sliding groove (303). One end of the first telescopic plate (304) and the second telescopic plate (305) are snapped into the interior of the connecting block (204), and the other end is detachably connected to the protective rod (301).
6. The adjustable-spacing telescopic fork mechanism according to claim 5, characterized in that: An installation block (302) is fixedly installed at one end of the protective rod (301).