Anti-backward-inclination structure of mechanical tower arm
By installing an adjustable anti-tilting cylinder and tension spring assembly between the counterweight and boom of the mechanical tower boom, the problem of insufficient versatility of existing anti-tilting structures is solved, and the applicability and stability of different cranes are improved.
Patent Information
- Application Number
- CN202520677524.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Existing anti-tilting structures lack versatility and cannot be adjusted according to crane type or working conditions, resulting in inaccurate installation positions and an inability to provide sufficient support or stability.
A mechanical tower boom structure including an anti-tilting component was designed. By setting an adjustable anti-tilting cylinder and a tension spring between the counterweight boom and the jib, combined with a reinforcing cylinder, the angle of the jib is limited and supported. It is suitable for cranes of different sizes.
The anti-tilting structure has improved versatility and support, ensuring the stability of the crane during use and avoiding the risk of the tower boom tilting backward.
Smart Images
Figure CN223892319U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical tower arm technical field more particularly to a kind of mechanical tower arm anti-back tilt structure. BACKGROUND
[0002] Tower arm is the structure that tower, arm frame with or without auxiliary arm and necessary accessories are composed, in tower crane, tower arm usually includes hoisting arm and balance arm, they cooperate to complete hoisting task, mechanical tower arm has wide application in construction engineering, especially in high-rise building, bridge construction and hoisting of large equipment play an important role, it not only improves construction efficiency, also reduces the labor intensity of worker Mechanical tower arm has the advantages of large lifting capacity, high lifting height, large working amplitude, can meet the needs of various complex hoisting tasks.
[0003] The deficiencies of prior art are: the existing anti-back tilt structure is often designed for specific type of crane or specific working condition, lack of universality, when crane type or working condition changes, the size of existing anti-back tilt structure cannot be adjusted, cannot guarantee the accuracy of its installation position, easily lead to anti-back tilt structure unable to provide sufficient supporting force or stability. UTILITY MODEL CONTENT
[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a kind of mechanical tower arm anti-back tilt structure to solve the problems of lack of universality of existing anti-back tilt structure in the above background art, size cannot be adjusted, cannot guarantee the accuracy of its installation position, easily lead to anti-back tilt structure unable to provide sufficient supporting force or stability.
[0005] The utility model provides the following technical scheme: a kind of mechanical tower arm anti-back tilt structure, including tower and the platform being set to its top end, the top end of the platform is provided with balance arm and crane arm, the balance arm and crane arm between being provided with the anti-back tilt component for preventing tower arm back tilt, one end of the balance arm is fixedly connected with two top rods for increasing support force, the one end of the crane arm middle is fixedly connected with reinforcing rod;
[0006] The anti-back tilt component includes the first mounting bracket being fixedly connected to the other end of balance arm, the second mounting bracket is fixedly connected in the inside of one end of crane arm close to balance arm, the inner cavity of the first mounting bracket is movably connected with two first adjusting pieces, the inner cavity of the second mounting bracket is movably connected with two second adjusting pieces, anti-back tilt oil cylinder is installed between the first adjusting piece and the second adjusting piece, the outer surface of the anti-back tilt oil cylinder is equipped with tension spring.
[0007] Preferably, the front and rear ends of the anti-back tilt oil cylinder are fixedly connected with first rotary connecting blocks, and the first rotary connecting blocks are rotatably connected with the inner cavities of the first adjusting pieces and the second adjusting pieces.
[0008] Preferably, two adjusting grooves are formed in the first mounting frame and the second mounting frame respectively, and two mounting holes are formed in the first adjusting member and the second adjusting member respectively, the adjusting grooves and the mounting holes are in position correspondence and connected.
[0009] Preferably, two fasteners are arranged in the inner cavity of the adjusting groove, and the fasteners penetrate the adjusting groove and the mounting hole.
[0010] Preferably, the jib is rotationally connected with the platform, and the bottom end of the top rod is fixedly connected to the top end of the platform.
[0011] Preferably, two reinforcing oil cylinders are rotationally connected to one end of the platform close to the jib, the output end of the reinforcing oil cylinder is rotationally connected with a second rotationally connected block, and the second rotationally connected block is fixedly connected with the bottom end of the jib.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] 1. The first mounting frame and the second mounting frame are arranged to facilitate the installation of the anti-rear-inclination assembly, before installation, the first mounting frame and the second mounting frame are fixed on the balance arm and the jib respectively, then the positions of the first adjusting member and the second adjusting member in the inner cavities of the first mounting frame and the second mounting frame are adjusted according to the specific size or working condition of the crane, the fasteners are penetrated through the adjusting grooves and the mounting holes after the adjustment is completed, so that the positions of the first adjusting member and the second adjusting member are fixed, and finally the anti-rear-inclination oil cylinder is installed between the first mounting frame and the second mounting frame, so that the anti-rear-inclination assembly can be applied to cranes of various sizes, the universality and supporting force of the anti-rear-inclination structure are effectively increased, and the stability of the crane during use is ensured.
[0014] 2. The anti-rear-inclination assembly is arranged between the balance arm and the jib to prevent the tower arm from tilting backward, during use of the jib, the anti-rear-inclination oil cylinder is started, the extension end of the anti-rear-inclination oil cylinder is continuously retracted with the change of the angle of the jib during use, and the anti-rear-inclination oil cylinder is rotationally connected with the jib, the surface of the anti-rear-inclination oil cylinder is sleeved with a tension spring, when the jib rotates backward, the extension end of the anti-rear-inclination oil cylinder is retracted, so that the tension spring is continuously compressed, the angle of the jib during backward rotation is limited by the tension spring, the backward tilting of the jib is avoided, and the stability of the tower arm is effectively increased. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a whole structure schematic view of the utility model.
[0016] Figure 2The utility model discloses a rearward inclination prevention assembly structure schematic diagram.
[0017] Figure 3 The utility model discloses a whole cross section structure schematic diagram. Figure 2 The utility model discloses a structure amplification schematic diagram at A place.
[0018] Figure 4 The utility model discloses a whole cross section structure schematic diagram.
[0019] The figure mark is: 1, tower; 2, platform; 3, balance arm; 4, jib; 5, rearward inclination prevention assembly; 51, first mounting bracket; 52, second mounting bracket; 53, first adjusting part; 54, second adjusting part; 55, rearward inclination prevention oil cylinder; 56, tension spring; 57, first rotary connecting block; 58, adjusting groove; 59, mounting hole; 510, fastener; 6, top rod; 7, reinforcing rod; 8, reinforcing oil cylinder; 9, second rotary connecting block. Specific implementation
[0020] The utility model discloses a rearward inclination prevention assembly structure schematic diagram.
[0021] The utility model provides a kind of mechanical tower arm rearward inclination prevention structure, as shown in Figure 1 Figure 4 As shown, including tower 1 and the platform 2 of being set to its top, the top of platform 2 is provided with balance arm 3 and jib 4, and rearward inclination prevention assembly 5 for preventing tower arm backward inclination is provided between balance arm 3 and jib 4, one end of balance arm 3 is fixedly connected with two top rods 6 for increasing support force, and reinforcing rod 7 is fixedly connected to the middle of one end of jib 4.
[0022] Further, as shown in Figure 1 and Figure 2 As shown, the anti-rear-inclination assembly 5 comprises a first mounting frame 51 fixedly connected to the other end of the balance arm 3, and a second mounting frame 52 fixedly connected to the inner side of the one end of the cantilever 4 close to the balance arm 3, the inner cavity of the first mounting frame 51 movably connected with two first adjusting members 53, and the inner cavity of the second mounting frame 52 movably connected with two second adjusting members 54. Before the anti-rear-inclination structure is installed, first, the positions of the first mounting frame 51 and the second mounting frame 52 are fixed, and then, according to the specific size or working condition of the crane, the positions of the first adjusting members 53 and the second adjusting members 54 are adjusted so that the positions of the first adjusting members 53 and the second adjusting members 54 correspond to the positions of the balance arm 3 and the cantilever 4, thereby ensuring the supporting force of the anti-rear-inclination structure. The anti-rear-inclination oil cylinder 55 is installed between the first adjusting members 53 and the second adjusting members 54, and the outer surface of the anti-rear-inclination oil cylinder 55 is sleeved with the tension spring 56.
[0023] Further, as shown in Figure 2 and Figure 3 , the front and rear ends of the anti-rear-inclination oil cylinder 55 are fixedly connected with first rotating connecting blocks 57, and the first rotating connecting blocks 57 are rotatably connected with the middle portions of the inner cavities of the first adjusting members 53 and the second adjusting members 54. During the use of the crane, the anti-rear-inclination oil cylinder 55 is started, and with the rotation of the cantilever 4 at the top end of the platform 2, the extending end of the anti-rear-inclination oil cylinder 55 continuously expands and contracts. When the cantilever 4 rotates backward, the extending end of the anti-rear-inclination oil cylinder 55 contracts, so that the tension spring 56 is continuously compressed. The angle of the backward rotation of the cantilever 4 is limited by the tension spring 56, and the elastic feature of the tension spring 56 avoids the rotation angle of the cantilever 4 from being too large and causing the cantilever 4 to fall backward.
[0024] Further, as shown in Figure 2 and Figure 3 , two adjusting grooves 58 are respectively formed in the first mounting frame 51 and the second mounting frame 52, and two mounting holes 59 are respectively formed in the first adjusting members 53 and the second adjusting members 54, and the positions of the adjusting grooves 58 and the mounting holes 59 correspond and are connected.
[0025] Further, as shown in Figure 2 and Figure 3 , two fasteners 510 are arranged in the inner cavities of the adjusting grooves 58, and the fasteners 510 penetrate through the adjusting grooves 58 and the mounting holes 59. After the positions of the first adjusting members 53 and the second adjusting members 54 are adjusted, the positions are fixed by the fasteners 510. The anti-rear-inclination assembly 5 can be applied to cranes of different sizes or working conditions, effectively increasing the universality of the structure.
[0026] Further, as shown in Figure 1 and Figure 4 , the cantilever 4 is rotatably connected with the platform 2, and the bottom end of the jacking rod 6 is fixedly connected to the top end of the platform 2. The jacking rod 6 increases the supporting strength of the balance arm 3.
[0027] Further, as shown in the drawings, Figure 4 The top end of the platform 2 is rotatably connected with two reinforcing oil cylinders 8 near one end of the boom 4, the output end of the reinforcing oil cylinder 8 is rotatably connected with a second rotating connecting block 9, the second rotating connecting block 9 is fixedly connected with the bottom end of the boom 4, when the boom 4 rotates backward, the extension end of the reinforcing oil cylinder 8 also continuously extends with the rotation, and the bottom end of the boom 4 is pulled, so that the stability of the boom 4 in the process of rotating backward is increased.
[0028] The working principle of the utility model is: first, the first mounting frame 51 and the second mounting frame 52 are fixed on the balance arm 3 and the boom 4 respectively, after the fixing is completed, according to the specific size or working condition of the crane, the position of the first adjusting part 53 and the second adjusting part 54 in the inner cavity of the first mounting frame 51 and the second mounting frame 52 is adjusted, so that the position of the first adjusting part 53 and the second adjusting part 54 corresponds to the position of the balance arm 3 and the boom 4, the supporting force and stability of the anti-backward tilting structure are ensured, after the position adjustment is completed, the fastener 510 is penetrated through the adjusting groove 58 and the mounting hole 59, the position of the first adjusting part 53 and the second adjusting part 54 is fixed through the fastener 510, so that the structure can be suitable for cranes of various different sizes, the universality of the anti-backward tilting structure is effectively increased, in the using process, the anti-backward tilting oil cylinder 55 is started, with the rotation of the boom 4 at the top end of the platform 2, the extension end of the anti-backward tilting oil cylinder 55 continuously extends and retracts, when the boom 4 rotates backward, the extension end of the anti-backward tilting oil cylinder 55 retracts, so that the tension spring 56 continuously compresses, the angle size of the boom 4 in the process of rotating backward is limited through the tension spring 56, the elastic feature of the tension spring 56 avoids that the rotation angle of the boom 4 is too large and backward tilting occurs, at the same time, when the boom 4 rotates backward, the extension end of the reinforcing oil cylinder 8 also continuously extends with the rotation, the bottom end of the boom 4 is pulled, so that the stability of the boom 4 in the process of rotating backward is increased, and the situation that the boom 4 tilts due to the too large rotation angle in the using process is avoided.
[0029] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;
[0030] Secondly: the utility model discloses the embodiment in the drawings only relates to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;
[0031] Finally: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.
Claims
1. A mechanical tower arm anti-tilting structure, comprising a tower (1) and a platform (2) disposed at its top, wherein a counterweight arm (3) and a boom (4) are disposed at the top of the platform (2), characterized in that: An anti-tilting assembly (5) for preventing the tower arm from tilting backward is provided between the balance arm (3) and the boom (4). Two top rods (6) for increasing the support force are fixedly connected to one end of the balance arm (3). A reinforcing rod (7) is fixedly connected to the middle of one end of the boom (4). The anti-tilt assembly (5) includes a first mounting bracket (51) fixedly connected to the other end of the balance arm (3). A second mounting bracket (52) is fixedly connected inside the end of the boom (4) near the balance arm (3). Two first adjusting members (53) are movably connected to the inner cavity of the first mounting bracket (51). Two second adjusting members (54) are movably connected to the inner cavity of the second mounting bracket (52). An anti-tilt cylinder (55) is installed between the first adjusting member (53) and the second adjusting member (54). A tension spring (56) is sleeved on the outer surface of the anti-tilt cylinder (55).
2. The mechanical tower arm anti-tilting structure according to claim 1, characterized in that: The anti-tilting cylinder (55) is fixedly connected to the front and rear ends with a first rotating connecting block (57), and the first rotating connecting block (57) is rotatably connected to the middle of the inner cavity of the first adjusting member (53) and the second adjusting member (54).
3. The mechanical tower arm anti-tilting structure according to claim 1, characterized in that: The first mounting bracket (51) and the second mounting bracket (52) each have two adjustment slots (58), and the first adjustment member (53) and the second adjustment member (54) each have two mounting holes (59). The adjustment slots (58) and the mounting holes (59) are in corresponding positions and connected.
4. The mechanical tower arm anti-tilting structure according to claim 3, characterized in that: The inner cavity of the adjustment groove (58) is provided with two fasteners (510), which pass through the adjustment groove (58) and the mounting hole (59).
5. The mechanical tower arm anti-tilting structure according to claim 1, characterized in that: The boom (4) is rotatably connected to the platform (2), and the bottom end of the top rod (6) is fixedly connected to the top end of the platform (2).
6. The mechanical tower arm anti-tilting structure according to claim 1, characterized in that: Two reinforcing cylinders (8) are rotatably connected to the top of the platform (2) near the end of the boom (4). The output end of the reinforcing cylinder (8) is rotatably connected to a second rotating connecting block (9). The second rotating connecting block (9) is fixedly connected to one side of the bottom end of the boom (4).