Adjustable mechanical limiting device for cantilever crane
By designing an adjustable mechanical limit device, the problem of the inability to adjust the limit structure of the cantilever crane was solved, realizing flexible adjustment of the limit position and buffering function, thus improving the ease of use and service life of the cantilever crane.
Patent Information
- Application Number
- CN202520565896.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The existing cantilever crane's limiting structure has a fixed position that cannot be adjusted, resulting in poor ease of use.
An adjustable mechanical limit device was designed, including a limit adjustment mechanism and a buffer mechanism. The limit position is adjusted by the movement of the limit plate in the adjustment groove and the cooperation of the cam. The combination of the buffer plate and the elastic wire prevents damage to the limit plate and the crossbeam.
It enables flexible adjustment of the limit position, improves ease of use, and extends the service life of the device through a buffer mechanism.
Smart Images
Figure CN223950649U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cantilever crane technical field, concretely relates to a kind of adjustable mechanical limiting device for cantilever crane. BACKGROUND
[0002] Cantilever crane is a commonly used hoisting equipment, cantilever crane can quickly and accurately move goods from one place to another, reduces the time and labor intensity of manual handling, thereby improve production efficiency, cantilever crane adopts cantilever design, can complete multiple direction hoisting operation in limited space, thereby save the space of operation site, this design makes cantilever crane can also be flexible operation in narrow or complex environment, improve space utilization, cantilever crane can be applied to various different places and industries, including building, port, factory, mine etc., can meet different work demand hoisting operation, whether heavy goods handling or light material hoisting, cantilever crane can provide corresponding solution, therefore more widely used.
[0003] Cantilever crane needs to adopt limiting structure in use process, and the movement of cantilever crane is limited, but the position of the existing limiting structure is fixed, inconvenient to adjust, leading to use is limited, and then reduce use convenience, for this, we provide a kind to be adjustable mechanical limiting device for cantilever crane. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind to be adjustable mechanical limiting device for cantilever crane to solve the problems in the above background technology.
[0005] To solve the above technical problem, the technical scheme adopted by the utility model is:
[0006] A kind to be adjustable mechanical limiting device for cantilever crane, including cantilever crane body, the cantilever crane body includes support column, the top end outer surface of the support column is rotationally sleeved with crossbeam, the top of the crossbeam is fixedly connected with bearing inclined beam, the other end of the bearing inclined beam is rotationally installed at the top of support column.
[0007] The top end of the support column is provided with a limiting adjustment mechanism, and the outer side of the limiting adjustment mechanism is provided with a buffer mechanism.
[0008] The limiting adjustment mechanism includes fixed ring one fixedly sleeved on the outer surface of support column above crossbeam, and the outer surface of the support column is fixedly sleeved with fixed ring two below crossbeam.
[0009] The further improvement in the utility model technical scheme lies in that: adjusting grooves are formed at the left sides of the fixed ring one and the fixed ring two, limit plates are slidably installed at the two ends inside the adjusting grooves, a moving groove is formed at the upper side of the fixed ring one around the outer surface of the support column, and the adjusting groove can limit the movement of the limit plate.
[0010] The further improvement in the utility model technical scheme lies in that: a sliding vertical rod is fixedly installed inside the moving groove, an extrusion ring is slidably sleeved on the outer surface of the sliding vertical rod, and a return spring is movably sleeved on the outer surface of the sliding vertical rod below the extrusion ring.
[0011] The further improvement in the utility model technical scheme lies in that: a lower tooth is fixedly installed on the top outer side of the limit plate, and a connecting vertical plate is fixedly installed on the top right side of the limit plate.
[0012] The further improvement in the utility model technical scheme lies in that: the top of the connecting vertical plate penetrates through the extrusion ring and is rotatably connected with cams on the two sides, and an upper tooth is fixedly installed on the bottom end outer side of the extrusion ring.
[0013] The further improvement in the utility model technical scheme lies in that: the buffer mechanism comprises a buffer groove formed inside the limit plate, a buffer plate is movably inserted into the buffer groove, a sliding rod is fixedly installed on the inner wall of the buffer plate, sliding blocks are slidably sleeved on the upper and lower ends of the sliding rod, and the sliding rod can limit the movement of the sliding block.
[0014] The further improvement in the utility model technical scheme lies in that: elastic wires are movably sleeved on the outer sides of the upper and lower ends of the sliding rod, a buffer rod is rotatably connected to the left side of the sliding block, the other end of the buffer rod is rotatably connected with a rotating shaft, and the rotating shaft is fixedly installed on the inner wall of the buffer groove.
[0015] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:
[0016] 1、The utility model provides a kind of adjustable mechanical limiting device for cantilever crane, the rotation angle of crossbeam can be limited by being equipped with limit plate, limit plate moves inside adjusting groove, rotates around support column, it is convenient to adjust limiting position, after adjustment, the knob plate of cam front side is pushed upward, so that cam rotates, its protruding end is in contact with the top of extrusion ring, extrusion ring is forced to move down and thus upper tooth and lower tooth are engaged, it is convenient to fix the adjustment of limit plate, so as to realize the convenience of limit plate use.
[0017] 2, the utility model provides a kind of adjustable mechanical limiting device for cantilever crane, through the contact of buffer plate on one side of limiting plate when beam is rotated at angle, the impact produced by contact promotes buffer plate to move to the inside of buffer groove, in turn promotes two groups of sliders to move in opposite directions, and extrudes elastic wire, then promotes its rebound reset by the elastic potential of elastic wire, reach the effect of buffering, prevent limiting plate and beam from being damaged, in turn improve the effect of service life. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is structural schematic diagram of the utility model;
[0019] Figure 2 It is structural schematic diagram of the utility model's support column;
[0020] Figure 3 It is structural schematic diagram of the utility model's fixed ring one and fixed ring two;
[0021] Figure 4 It is the utility model's Figure 3 A enlarged structural schematic diagram;
[0022] Figure 5 It is the utility model's limiting plate structural schematic diagram.
[0023] In the drawing: 1, cantilever crane body;2, support column;21, fixed ring one;22, fixed ring two;23, adjusting groove;24, limiting plate;241, buffer groove;242, buffer plate;243, sliding rod;244, slider;245, elastic wire;246, buffer rod;247, rotating shaft;25, moving groove;26, sliding vertical rod;27, extrusion ring;28, reset spring;29, lower tooth;210, connecting vertical plate;211, cam;212, upper tooth;3, beam;4, bearing inclined beam. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0025] Embodiment 1
[0026] As Figures 1-5As shown, the utility model provides a kind of adjustable mechanical limiting device for cantilever crane, including cantilever crane body 1, cantilever crane body 1 includes support column 2, the top outer surface of support column 2 is rotationally sleeved with crossbeam 3, the top of crossbeam 3 is fixedly connected with bearing inclined beam 4, the other end of bearing inclined beam 4 is rotatably installed at the top of support column 2, and the top of support column 2 is provided with a limiting adjusting mechanism, the outside of limiting adjusting mechanism is provided with buffer mechanism, buffer mechanism includes buffer groove 241 opened in the inside of one side of limiting plate 24, buffer plate 242 is movably inserted in the inside of buffer groove 241, sliding rod 243 is fixedly installed on the inner wall of buffer plate 242, sliding block 244 is slidably sleeved with the upper and lower ends of sliding rod 243, elastic wire 245 is movably sleeved with the upper and lower ends of sliding rod 243 on the outside of sliding block 244, buffer rod 246 is rotatably connected with the left side of sliding block 244, the other end of buffer rod 246 is rotatably connected with rotating shaft 247, and rotating shaft 247 is fixedly installed on the inside of the left side of buffer groove 241.
[0027] Further, when crossbeam 3 is rotated at angle, it will contact with buffer plate 242 on the side of limiting plate 24, and the impact generated by contact promotes buffer plate 242 to move to the inside of buffer groove 241, in turn promotes two groups of sliding blocks 244 to move in opposite directions and extrude elastic wire 245, and then the elastic potential of elastic wire 245 promotes it to rebound and reset, to achieve the effect of buffering, to prevent limiting plate 24 and crossbeam 3 from being damaged.
[0028] Example 2
[0029] As Figures 1-5 As shown, on the basis of example 1, the utility model provides a kind of technical scheme: preferably, limiting adjusting mechanism includes fixed ring one 21 fixedly sleeved on the outer surface of support column 2 above crossbeam 3, fixed ring two 22 is fixedly sleeved with the outer surface of support column 2 below crossbeam 3, adjusting groove 23 is formed in the left side of fixed ring one 21 and fixed ring two 22, limiting plate 24 is slidably installed in the inside of both ends of adjusting groove 23, moving groove 25 is formed in the outer surface of support column 2 above fixed ring one 21, sliding vertical rod 26 is fixedly installed in the inside of moving groove 25, extrusion ring 27 is slidably sleeved on the outer surface of sliding vertical rod 26, reset spring 28 is movably sleeved with the outer surface of sliding vertical rod 26 below extrusion ring 27, lower tooth 29 is fixedly installed on the top outside of limiting plate 24, connecting vertical plate 210 is fixedly installed on the top right side of limiting plate 24, cam 211 is rotatably connected with both sides of extrusion ring 27 and penetrates extrusion ring 27 on the top of connecting vertical plate 210, and upper tooth 212 is fixedly installed on the bottom outside of extrusion ring 27.
[0030] Furthermore, the limiting plate 24 can move inside the adjusting groove 23 and rotate around the support column 2 to facilitate adjustment of the limiting position. After adjustment, the toggle plate on the front side of the cam 211 is pushed upward again to make the cam 211 rotate. Its protruding end abuts against the top of the extrusion ring 27, causing the extrusion ring 27 to move downward and thus make the upper tooth 212 engage with the lower tooth 29, which facilitates fixing the adjustment of the limiting plate 24.
[0031] The working principle of the adjustable mechanical limit device for this cantilever crane will be explained in detail below.
[0032] like Figures 1-5 As shown, during use, one end of the crossbeam 3 can rotate on the outer surface of the support column 2 to adjust the angle. During rotation, two sets of limiting plates 24 limit the rotation angle to prevent the crossbeam from rotating excessively. When it is necessary to adjust the rotation angle, the cam 211 can be rotated by moving the actuating plate of the cam 211. Its bottom end rotates to the rear side, at which time the compression ring 27 loses the compression force and moves upward and rebounds under the elastic counter-force of the return spring 28, thereby causing the upper tooth 212 to disengage from the engagement with the lower tooth 29. At this time, the limiting plate 24 can be moved inside the adjusting groove 23 and rotate around the support column 2 to facilitate the adjustment of the limiting position. After adjustment, the cam 212 can be moved upward again. The actuating plate on the front side of wheel 211 causes cam 211 to rotate. Its protruding end abuts against the top of compression ring 27, causing compression ring 27 to move down and thus causing upper tooth 212 to engage with lower tooth 29, which facilitates the adjustment and fixation of limit plate 24. When the crossbeam 3 rotates at an angle, it will contact the buffer plate 242 on one side of limit plate 24. The impact generated by the contact causes buffer plate 242 to move into the buffer groove 241, which in turn causes the two sets of sliders 244 to move in opposite directions and squeeze the elastic wire 245. Then, the elastic potential energy of elastic wire 245 causes it to rebound and reset, thus achieving the buffering effect and preventing damage to limit plate 24 and crossbeam 3.
[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. An adjustable mechanical stop device for a jib crane, comprising a jib crane body (1), characterized in that: The cantilever crane body (1) includes a support column (2), the top end of the support column (2) is rotatably sleeved with a cross beam (3), the top of the cross beam (3) is fixedly connected with a bearing inclined beam (4), and the other end of the bearing inclined beam (4) is rotatably installed at the top of the support column (2); The top end of the support column (2) is provided with a limiting adjusting mechanism, and the outer side of the limiting adjusting mechanism is provided with a buffer mechanism; The limiting adjusting mechanism includes a fixed ring one (21) fixedly sleeved on the outer surface of the support column (2) above the cross beam (3), and a fixed ring two (22) fixedly sleeved on the outer surface of the support column (2) below the cross beam (3).
2. A mechanically adjustable limiter for a jib crane as claimed in claim 1, characterized in that: Adjusting grooves (23) are formed in the left sides of the fixed ring one (21) and the fixed ring two (22), limiting plates (24) are slidably installed at the two ends in the adjusting grooves (23), and moving grooves (25) are formed in the outer surface of the support column (2) above the fixed ring one (21).
3. A mechanically adjustable limiter for a jib crane as defined in claim 2, characterized in that: A sliding vertical rod (26) is fixedly installed in the moving groove (25), an extrusion ring (27) is slidably sleeved on the outer surface of the sliding vertical rod (26), and a return spring (28) is movably sleeved on the outer surface of the sliding vertical rod (26) below the extrusion ring (27).
4. A mechanically adjustable limiter for a jib crane as defined in claim 2, characterized in that: Lower teeth (29) are fixedly installed on the outer side of the top of the limiting plate (24), and a connecting vertical plate (210) is fixedly installed on the right side of the top of the limiting plate (24).
5. A mechanically adjustable limiter for a jib crane as defined in claim 4, characterized in that: Camshafts (211) are rotatably connected to the top of the connecting vertical plate (210) and penetrate the extrusion ring (27), and upper teeth (212) are fixedly installed on the outer side of the bottom end of the extrusion ring (27).
6. A mechanically adjustable limiter for a jib crane as defined in claim 1, wherein: The buffer mechanism includes a buffer groove (241) formed in the inner side of one side of the limiting plate (24), a buffer plate (242) is movably inserted into the buffer groove (241), a sliding rod (243) is fixedly installed on the inner wall of the buffer plate (242), and sliding blocks (244) are slidably sleeved on the upper and lower ends of the sliding rod (243).
7. A mechanically adjustable limiter for a jib crane as defined in claim 6, characterized in that: Elastic wires (245) are movably sleeved on the outer sides of the upper and lower ends of the sliding rod (243), a buffer rod (246) is rotatably connected to the left side of the sliding block (244), a rotating shaft (247) is rotatably connected to the other end of the buffer rod (246), and the rotating shaft (247) is fixedly installed on the inner side of the inner wall of the buffer groove (241).