Balancing weight dismounting and mounting limiting hanging structure

Abstract

The utility model discloses a counterweight dismounting limit hitching structure which comprises a rotary table, a limit structure and a counterweight hitching support, the rear tail of the rotary table and the counterweight hitching support are hitched through an upper group of hitching hinge points and a lower group of hitching hinge points, and the counterweight hitching support and the rear tail of the rotary table adopt external limit structures. The limiting structure comprises a first limiting block and a second limiting block, the first limiting block is arranged on the outer side of one end, close to the counterweight hooking support, of the rear tail of the rotary table, the second limiting block is arranged at the front end of the counterweight hooking support, and after the rotary table and the counterweight hooking support are hooked, the first limiting block abuts against the second limiting block. According to the limiting structure for disassembling and assembling the balancing weight, the balancing weight is visible when the balancing weight is disassembled and assembled, the disassembling and assembling efficiency and the maintenance convenience of the balancing weight are improved, and the machining difficulty is reduced.

Description

Technical Field

[0001] The utility model discloses a counterweight disassembly and assembly limiting hanging structure, which relates to the field of engineering machinery. Background Art

[0002] With the development of the hoisting industry, the demand for hoisting has gradually upgraded, and more and more services are provided for urban hoisting, which places higher and higher requirements on the operating efficiency of cranes. Counterweights are the main components of cranes to increase the anti-overturning moment and maintain the stability of the entire machine. The disassembly and assembly of counterweights is an indispensable step every time the crane is working. The frequency of use is very high, and the disassembly and assembly efficiency of counterweights has a great impact on the operating efficiency of cranes. At present, the common counterweight hanging form in the industry has a limiting structure hidden on the inner side of the vertical plate. During the disassembly and assembly process, the limiting structure of the counterweight hanging bracket is blocked by the two vertical plates and is not easy to observe. The hanging and maintenance efficiency is low. The limiting structure of the counterweight bracket is located on the inner side of the two vertical plates, which is difficult to process. Utility Model Content

[0003] In view of the defects in the above-mentioned background technology, the utility model provides a counterweight disassembly and assembly limit hanging structure, which adopts a visible limit structure, and the counterweight disassembly and assembly is more convenient and efficient and simple to process.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a counterweight disassembly and assembly limit hanging structure, comprising: a turntable, a limit structure and a counterweight hanging bracket, the rear end of the turntable and the counterweight hanging bracket are hung through two sets of upper and lower hanging hinges, the counterweight hanging bracket and the rear end of the turntable adopt an external limit structure, the limit structure comprises: a first limit block and a second limit block, the first limit block is arranged on the outside of the rear end of the turntable close to one end of the counterweight hanging bracket, the second limit block is arranged at the front end of the counterweight hanging bracket, the second limit block is integrally connected with the counterweight hanging bracket, after the turntable and the counterweight hanging bracket are hung, the first limit block and the second limit block abut against each other.

[0005] Furthermore, the turntable includes: a hanging hole on the turntable and a hanging groove under the turntable, the hanging hole on the turntable and the hanging groove under the turntable are arranged on the upper and lower sides of the rear end of the turntable, and the center line of the hanging groove under the turntable and the center of the hanging hole on the turntable are on the same vertical line.

[0006] Furthermore, the counterweight hanging bracket includes: an upper hanging hole of the counterweight hanging bracket and a lower hanging hole of the counterweight hanging bracket, the upper hanging hole of the counterweight hanging bracket is used to be hinged with the upper hanging hole of the turntable through a first hanging pin, and the lower hanging hole of the counterweight hanging bracket is used to be hinged with the lower hanging groove of the turntable through a second hanging pin.

[0007] Furthermore, the lower hanging hole of the counterweight hanging bracket is arranged on the front side of the counterweight hanging bracket, and the second hanging pin is inserted into the lower hanging hole of the counterweight hanging bracket.

[0008] Furthermore, the contact surface between the lower side of the first limit block and the upper side of the second limit block adopts a wedge-shaped design to enhance the guiding effect and facilitate the docking between the turntable and the counterweight hanging bracket.

[0009] Furthermore, the upper side of the first limit block and the lower side of the second limit block are designed with vertical surfaces. When the vertical surfaces of the two are in contact, the centers of the hanging holes on the counterweight hanging bracket and the hanging holes on the turntable are on the same vertical line.

[0010] Furthermore, the notch of the lower hanging slot of the turntable is designed to face downward.

[0011] Furthermore, the hanging groove under the turntable is designed to be semicircular, and the groove opening gradually becomes larger downward, thereby improving the guiding effect and making it convenient to hang the machine in the hanging groove under the turntable on the counterweight hanging bracket.

[0012] Beneficial effects: The utility model provides a limiting structure for disassembly and assembly of a counterweight, which is visible when the counterweight is disassembled and assembled, thereby improving the disassembly and assembly efficiency and maintenance convenience of the counterweight and reducing the difficulty of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the turntable structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the counterweight mounting bracket of the utility model;

[0016] Figure 4 This is a schematic diagram of the assembly process of the utility model;

[0017] Figure 5 It is a schematic diagram of the prior art structure. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the implementation of the technical solution in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0019] like Figure 1 An embodiment shown in the figure provides a counterweight disassembly and assembly position limiting and hanging structure, comprising: a turntable 1, a position limiting structure 2 and a counterweight hanging bracket 3,

[0020] The turntable 1 is a structural component on the crane used for the upper vehicle to rotate. It is the main force-bearing structure when the crane is lifting.

[0021] The counterweight mounting bracket 3 is located on the counterweight and is a structure that cooperates with the turntable for mounting;

[0022] The counterweight is located at the tail of the turntable and is used to balance the tipping moment generated when the crane is lifting and keep the whole machine stable.

[0023] The rear end of the turntable 1 and the counterweight mounting bracket 3 are mounted through two sets of upper and lower mounting hinges. The counterweight mounting bracket and the rear end of the turntable adopt an external limiting structure. The limiting structure 2 includes: a first limiting block 21 and a second limiting block 22. The first limiting block 21 is arranged on the outer side of a single vertical plate at the rear end of the turntable 1 close to one end of the counterweight mounting bracket 3. The second limiting block 22 is arranged at the front end of the counterweight mounting bracket 3. The second limiting block 22 is integrally connected with the counterweight mounting bracket 3. After the turntable 1 and the counterweight mounting bracket 3 are mounted, the first limiting block 21 and the second limiting block 22 abut against each other.

[0024] like Figure 2 As shown, the turntable 1 includes: a turntable upper hanging hole 11 and a turntable lower hanging groove 12, the turntable upper hanging hole 11 and the turntable lower hanging groove 12 are arranged on the upper and lower sides of the rear end of the turntable, and the center line of the turntable lower hanging groove 12 and the center of the circle of the turntable hanging hole 11 are on the same vertical line, and the groove of the turntable lower hanging groove 12 is designed downward; the turntable lower hanging groove 12 is semicircular in design, and the groove gradually becomes larger downward.

[0025] like Figure 3 As shown, the counterweight hanging bracket 3 includes: an upper hanging hole 31 of the counterweight hanging bracket and a lower hanging hole 32 of the counterweight hanging bracket, the upper hanging hole 31 of the counterweight hanging bracket is used to be hinged with the upper hanging hole 11 of the turntable through a first hanging pin, and the lower hanging hole 32 of the counterweight hanging bracket is used to be hinged with the lower hanging groove 12 of the turntable through a second hanging pin; the lower hanging hole 32 of the counterweight hanging bracket is arranged at the double vertical plates at the lower end of the front side of the counterweight hanging bracket, and the second hanging pin is inserted into the lower hanging hole 32 of the counterweight hanging bracket.

[0026] The contact surface between the lower side of the first limiting block 21 and the upper side of the second limiting block 22 is wedge-shaped.

[0027] The upper side of the first limit block 21 and the lower side of the second limit block 22 are designed with vertical surfaces. When the vertical surfaces of the two are in contact, the centers of the hanging holes 31 on the counterweight hanging bracket and the hanging holes 11 on the turntable are on the same vertical line.

[0028] like Figure 4As shown, before the counterweight is installed, the turntable 1 is first aligned with the counterweight mounting bracket 3. At this time, the counterweight mounting bracket 3 is located at the bottom. After the counterweight mounting bracket 3 is lifted, the lower mounting pin 32 of the counterweight mounting bracket contacts the turntable mounting groove 12 first, and then the counterweight mounting bracket 3 is lifted. After the turntable limiting surface 21 of the limiting structure is tightly combined with the mounting bracket limiting surface 22 of the limiting structure, the lifting is continued until the lower mounting hole 32 of the counterweight mounting bracket is completely aligned with the lower mounting groove 12 of the turntable, the lower mounting groove 12 of the turntable is overlapped and the second mounting pin is inserted, and the upper mounting hole 31 of the counterweight mounting bracket is completely aligned with the lower upper mounting hole 11 of the turntable due to the limiting effect of the limiting structure 2, and the upper mounting pin 31 of the counterweight mounting bracket is inserted to complete the mounting.

[0029] The utility model provides a limiting structure for disassembling and assembling a counterweight to solve the problem of Figure 5 The problem that the limiting structure is hidden in the inner side A of the vertical plate in the commonly used counterweight hanging form shown in the figure is solved. The limiting structure of the utility model is visible on the outside, and the counterweight is disassembled through the cooperation of the turntable limiting surface and the hanging bracket limiting surface to achieve rapid disassembly and assembly of the counterweight, thereby improving the disassembly and assembly efficiency of the counterweight and the convenience of maintenance, and reducing the processing difficulty.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A counterweight disassembly and assembly limit hanging structure, characterized in that: include: A turntable (1), a limiting structure (2) and a counterweight hanging bracket (3), wherein the rear end of the turntable (1) and the counterweight hanging bracket (3) are hung via two sets of upper and lower hanging hinges, and the limiting structure (2) comprises a first limiting block (21) and a second limiting block (22), wherein the first limiting block (21) is arranged at the outer side of the rear end of the turntable (1) close to one end of the counterweight hanging bracket (3), and the second limiting block (22) is arranged at the front end of the counterweight hanging bracket (3), and after the turntable (1) and the counterweight hanging bracket (3) are hung, the first limiting block (21) and the second limiting block (22) are in abutment with each other.

2. The counterweight disassembly and assembly limiting hanging structure according to claim 1 is characterized in that: The turntable (1) comprises: an upper turntable hanging hole (11) and a lower turntable hanging groove (12), wherein the upper turntable hanging hole (11) and the lower turntable hanging groove (12) are arranged on upper and lower sides of the rear end of the turntable, and the center line of the lower turntable hanging groove (12) and the center of the turntable hanging hole (11) are on the same vertical line.

3. The counterweight disassembly and assembly limiting hanging structure according to claim 2 is characterized in that: The counterweight hanging bracket (3) comprises: an upper hanging hole (31) of the counterweight hanging bracket and a lower hanging hole (32) of the counterweight hanging bracket, wherein the upper hanging hole (31) of the counterweight hanging bracket is used for hinge connection with the upper hanging hole (11) of the turntable via a first hanging pin, and the lower hanging hole (32) of the counterweight hanging bracket is used for hinge connection with the lower hanging groove (12) of the turntable via a second hanging pin.

4. The counterweight disassembly and assembly limiting hanging structure according to claim 3 is characterized in that: The lower hanging hole (32) of the counterweight hanging bracket is arranged on the front side of the counterweight hanging bracket (3), and the second hanging pin is inserted into the lower hanging hole (32) of the counterweight hanging bracket.

5. The counterweight disassembly and assembly limiting hanging structure according to claim 1, characterized in that: The contact surfaces between the lower side of the first limiting block (21) and the upper side of the second limiting block (22) are wedge-shaped.

6. The counterweight disassembly and assembly limiting hanging structure according to claim 5, characterized in that: The upper side of the first limit block (21) and the lower side of the second limit block (22) are designed with vertical surfaces. When the vertical surfaces of the two are in contact, the centers of the hanging holes (31) on the counterweight hanging bracket and the hanging holes (11) on the turntable are on the same vertical line.

7. The counterweight disassembly and assembly limiting hanging structure according to claim 2, characterized in that: The notch of the lower hanging groove (12) of the turntable is designed to face downward.

8. The counterweight disassembly and assembly limiting hanging structure according to claim 2, characterized in that: The lower hanging groove (12) of the turntable is designed to be semicircular, and the groove opening gradually becomes larger downwards.

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