CN212374778U - Pulley assembly and adjustable auxiliary beam structure comprising same - Google Patents
Pulley assembly and adjustable auxiliary beam structure comprising same Download PDFInfo
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- CN212374778U CN212374778U CN202020399341.1U CN202020399341U CN212374778U CN 212374778 U CN212374778 U CN 212374778U CN 202020399341 U CN202020399341 U CN 202020399341U CN 212374778 U CN212374778 U CN 212374778U
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Abstract
The utility model belongs to the technical field of aircraft rescue equipment, in particular to a pulley assembly and an adjustable auxiliary beam structure comprising the same; the pulley assembly comprises a fixed pulley unit and an adjustable pulley unit; the fixed pulley unit and the adjustable pulley unit are detachably connected together; the fixed pulley unit comprises a first mounting frame and two fixed pulleys which are rotatably and coaxially mounted in the first mounting frame, and the adjustable pulley unit comprises a second mounting frame, a movable pulley which is rotatably mounted in the second mounting frame and a lifting hook which is fixedly connected to the lower end of the second mounting frame; the adjustable auxiliary beam structure comprises an auxiliary hanging beam and the pulley assemblies, wherein at least one group of the pulley assemblies is arranged, and the adjustable auxiliary beam structure also comprises steel wire ropes sequentially penetrating through the pulley assemblies; the pulley components can be respectively connected to the lower ends of the auxiliary hanging beams in a sliding manner. The utility model discloses can solve present aircraft hoist and mount rigging limitation bigger to and inconvenient problem of operation when changing the model of airborne vehicle.
Description
Technical Field
The utility model belongs to the technical field of airborne vehicle rescue equipment, especially, relate to a loose pulley assembly and contain its adjustable auxiliary girder structure.
Background
In order to improve efficiency and save time, the aircraft gradually becomes the first choice for people to go far and go. Each large aircraft manufacturer provides various models for airlines in order to adapt to the market, so that the design difficulty of the airport emergency rescue hoisting equipment is increased. At present, the limitation of aircraft hoisting rigging is bigger, its hoist and mount assembly pulley formula structure as an organic whole, and fixed mounting, like this, the hoist rigging only limits to the aircraft of a certain type model, size, and the model when rescue aircraft changes, when leading to organism suspender quantity to change, need demolish or increase loose pulley assembly, and is very inconvenient.
Disclosure of Invention
In view of this, the utility model aims at providing a loose pulley assembly and contain its adjustable auxiliary beam structure to it is bigger to solve present aircraft hoist and mount rigging limitation, and inconvenient problem of operation when changing the model of airborne vehicle.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a pulley assembly includes a fixed pulley unit and an adjustable pulley unit; the method is characterized in that: the fixed pulley unit and the adjustable pulley unit are detachably connected together; the fixed pulley unit comprises a first mounting frame and a fixed pulley rotatably mounted in the first mounting frame, and the adjustable pulley unit comprises a second mounting frame, a movable pulley rotatably mounted in the second mounting frame and a hook fixedly connected to the lower end of the second mounting frame; no. two mounting brackets and a mounting bracket can be dismantled and link together.
Furthermore, two fixed pulleys are arranged, the two fixed pulleys are independently and rotatably and coaxially arranged in the first mounting frame, the first mounting shaft horizontally penetrates through the first mounting frame, and the two fixed pulleys penetrate through the first mounting shaft side by side; a second mounting shaft horizontally penetrates through the second mounting frame, and a movable pulley is mounted on the second mounting shaft; simultaneously, installation axle and No. two installation axles are located same vertical plane and parallel arrangement.
Furthermore, the first mounting frame comprises two first side plates which are arranged in parallel, and the first mounting shaft (2113) horizontally penetrates through the two first side plates; the second mounting frame comprises two second side plates which are arranged in parallel, and a second mounting shaft horizontally penetrates through the two second side plates; a pin hole is formed in the first side plate, a second pin hole in one-to-one correspondence with the first pin hole is formed in the second side plate, and the first side plate and the second side plate are detachably connected together through a connecting pin.
Further, a reinforcing rib plate is arranged on the surface of the first side plate; lightening holes are formed in the first side plate and the second side plate.
Further, the central axis of the mounting hole of the movable pulley is not perpendicularly intersected with the spoke surface of the movable pulley, and a guide groove extending along the circumferential direction is arranged on the rim surface of the movable pulley.
An adjustable auxiliary beam structure comprises an auxiliary hanging beam and the pulley assemblies, wherein at least one group of the pulley assemblies is arranged, and the adjustable auxiliary beam structure also comprises steel wire ropes sequentially penetrating through the pulley assemblies; the pulley components can be respectively connected to the lower ends of the auxiliary hanging beams in a sliding manner.
Furthermore, in the pulley assembly, a sliding connection part is arranged at the upper end of a first mounting frame in the fixed pulley unit, and the first mounting frame is connected to the lower end of the auxiliary hanging beam in a sliding mode through the sliding connection part.
Furthermore, the sliding connection part comprises a sliding groove, a sliding connection edge is arranged at the lower end of the auxiliary hanging beam, the shape of the sliding connection edge is matched with that of the sliding groove, and the sliding connection part is suspended and clamped on the sliding connection edge through the sliding groove.
Furthermore, the sliding groove comprises at least one section of horizontally extending clamping groove section, the lower end of the auxiliary hanging beam is provided with at least one horizontally extending sliding connection edge, and the sliding connection edge is clamped in the clamping groove section.
Furthermore, two ends of the auxiliary hanging beam are respectively provided with a limiting piece; the upper end of the auxiliary hanging beam is provided with a lifting lug; two ends of the auxiliary hanging beam are respectively provided with a rope guide wheel.
Compared with the prior art, the utility model discloses following advantage has:
the utility model provides a loose pulley assembly and contain its adjustable auxiliary girder structure.
The utility model discloses in loose pulley assembly 2, wire rope 3 is used in the cooperation, can be used to install and be used for aircraft hoist and mount operation in various airborne vehicle rescue equipment, can use loose pulley assembly 2 fixed mounting or movable mounting under the hoist and mount crossbeam, but fixed pulley unit 21 and adjustable pulley unit 22 split come the use, in the certain limit, can change the hoist and mount height of lifting hook, the commonality is better.
The adjustable auxiliary beam structure of the utility model is suitable for hoisting operation of various aircrafts; when the aircraft is hoisted for operation, the pulley assemblies with proper number can be selected according to the size of the aircraft to be detached, in addition, the pulley assemblies can slide along the lower end of the auxiliary hoisting beam, the positions of the pulley assemblies on the auxiliary hoisting beam can be adjusted according to the use requirements, the number of the used pulley assemblies can be selected, and the hoisting height of the lifting hook can be adjusted, so that the device is suitable for all the positions of the aircraft body, the machine body sling and the aircraft body are perfectly attached, various aircraft hoisting operations can be completed by selecting the number of different pulley assemblies and matching with the machine body sling, and when the number of the machine body slings is changed due to the change of the model of the rescue aircraft, the redundant pulley assemblies do not need to be detached; the efficiency is improved, and the manpower labor is reduced.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic structural view of an adjustable secondary beam structure when the sheave assemblies are in a fully undetached state;
FIG. 2 is a schematic structural view of an adjustable secondary beam structure when the sheave assembly is in a partially disassembled state;
FIG. 3 is a schematic structural view of the secondary suspension beam;
FIG. 4 is a schematic view of a connection structure between the pulley assembly and the lower end of the auxiliary hanging beam;
fig. 5 is a schematic structural view of the sheave assembly in an undetached state;
FIG. 6 is a side view of FIG. 5;
fig. 7 is a schematic structural view of the sheave assembly in a disassembled state;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a schematic structural view of a fixed sheave unit;
FIG. 10 is a schematic structural view of an adjustable pulley unit;
FIG. 11 is a side view of FIG. 10;
fig. 12 is a schematic structural view of the movable pulley.
Description of reference numerals:
1-auxiliary hanging beam; 11-sliding connection edge; 12-a rope guide pulley; 13-a stop; 14-a lifting lug; 2-a pulley assembly; 21-a fixed pulley unit; 211-mount shelf number one; 2111-side panel number one; 21111-pin hole number one; 2112-primary connecting plate; 2113-installation of shaft number one; 2114-reinforcing floor; 2115-auxiliary connection plate No. one; 212-a fixed pulley; 213-a sliding connection; 2131-a chute; 21311-clamping groove section; 22-an adjustable pulley unit; 221-mount rack number two; 2211-side panel II; 22111-pin hole No. two; 2212-main link; 2213-installation axis II; 2214-auxiliary connecting plate No. two; 222-a movable pulley; 2220-guide groove; 2221-central axis; 2222-spoke face; 2223-rim surface; 223-a hook; 23-a connecting pin; and 3-steel wire rope.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a loose pulley assembly and contain its adjustable auxiliary girder structure describes below respectively.
A pulley assembly 2, as shown in fig. 5-8, comprising a fixed pulley unit 21 and an adjustable pulley unit 22; the fixed pulley unit 21 and the adjustable pulley unit 22 are detachably connected together, so that a proper number of pulley assemblies 2 can be selected according to use requirements for operation.
Specifically, the fixed pulley unit 21 includes a first mounting bracket 211 and a fixed pulley 212 rotatably mounted in the first mounting bracket 211, and the adjustable pulley unit 22 includes a second mounting bracket 221, a movable pulley 222 rotatably mounted in the second mounting bracket 221, and a hook 223 fixedly connected to the lower end of the second mounting bracket 221; the second mounting bracket 221 is detachably connected with the first mounting bracket 211.
Preferably, two fixed pulleys 212 are provided, and the two fixed pulleys 212 are independently rotatably and coaxially installed in the first mounting frame 211. When sheave assembly 2 used, need use wire rope 3 to wear from top to bottom in proper order through fixed pulley 212 and movable pulley 222 in sheave assembly 2, because wire rope 3's leading-out end and leading-out end all set up in fixed pulley 212 one end, the design like this, for convenient wire rope 3 winding, also can guarantee that wire rope 3 does not take off the groove.
In addition, preferably, in order to facilitate the passing through of the steel wire rope 3 in the using process, the fixed pulley 212 and the movable pulley 222 are arranged in an up-and-down alignment manner, and in cooperation with this, as shown in fig. 6 and 8, a first installation shaft 2113 is horizontally installed in the first installation frame 211 in a penetrating manner, and two fixed pulleys 212 are installed on the first installation shaft 2113 side by side; a second mounting shaft 2213 is horizontally arranged in the second mounting frame 221 in a penetrating manner, and the movable pulley 222 is mounted on the second mounting shaft 2213; meanwhile, the first installation shaft 2113 and the second installation shaft 2213 are located in the same vertical plane and arranged in parallel.
The utility model discloses in, mounting bracket 211 and No. two mounting brackets 221 can adopt the frame column structure of multiple structural style, can guarantee fixed pulley 212 and movable pulley 222 the stable installation and two support body between the stable connection can, for example rectangle frame column structure, H shape frame column structure, U-shaped frame etc..
As shown in fig. 9, in this embodiment, the first mounting bracket 211 includes two first side plates 2111 arranged in parallel, a first main connecting plate 2112 for fixedly connecting the two first side plates 2111 together is bridged between the two first side plates 2111, a first auxiliary connecting plate 2115 is further fixedly connected between the two first side plates 2111 for enhancing structural strength, and a first mounting shaft 2113 horizontally penetrates through the two first side plates 2111.
As shown in fig. 10 and 11, the second mounting frame 221 includes two second side plates 2211 arranged in parallel, a second main connecting rod 2212 for fixedly connecting the two second side plates 2211 together is bridged between the two second side plates 2211, and a second auxiliary connecting plate 2214 is further fixedly connected between the two second side plates 2211 for enhancing the structural strength; the second installation shaft 2213 horizontally penetrates through the two second side plates 2211.
The detachable connection between the first mounting frame 211 and the second mounting frame 221 can be achieved in various manners, such as bolt connection, pin connection, hook connection and the like, as long as the requirement for convenient detachment and connection of the first mounting frame 211 and the second mounting frame 221 can be met.
Preferably, in this embodiment, a first pin hole 21111 is formed in the first side plate 2111, a second pin hole 22111 corresponding to the first pin hole 21111 in a one-to-one manner is formed in the second side plate 2211, and the first side plate 2111 and the second side plate 2211 are detachably connected together through the connecting pin 23.
Preferably, the surface of the first side plate 2111 is provided with a reinforcing rib plate 2114; further enhancing structural strength.
Preferably, lightening holes are formed in the first side plate 2111 and the second side plate 2211 for lightening structural weight of the pulley assembly 2.
The movable pulley 222 may be a pulley of a conventional structure or a modified structure.
Preferably, in the present embodiment, as shown in fig. 12, a central axis 2221 of the mounting hole of the movable sheave 222 intersects with a spoke surface 2222 thereof non-perpendicularly, and a guide groove 2220 extending in the circumferential direction is provided on a rim surface 2223 of the movable sheave 222.
Through the cooperation of the two fixed pulleys 212 and the specially-shaped movable pulley 222, a special pulley combination structure is formed, and when the steel wire rope 3 passes through the pulley assemblies 2, the steel wire rope firstly passes through one fixed pulley 212 from the upper end, then passes downwards through the movable pulley 222, and then passes upwards through the other fixed pulley 212 (as shown in fig. 6 and 8), and then sequentially passes through each pulley assembly 2 in the method. Compared with the traditional pulley structure (namely, the pulley central axis 2221 is vertically intersected with the spoke surface 2222), the guide groove 2220 in the movable pulley 222 is inclined and arranged in compliance with the torsion direction of the steel wire rope 3, so that the leading-in end and the leading-out end of the steel wire rope 3 are changed, the torque generated by the steel wire rope 3 to the movable pulley 222 below by successively passing the two fixed pulleys 212 can be reduced to the maximum extent, the damage to the movable pulley 222 is reduced, the steel wire rope 3 can be attached to the guide groove 2220, the groove separation phenomenon cannot be generated, and the structural stability is better.
In addition, the pulley assembly 2 can also be applied to other fields, such as hoisting of building materials in the building construction process or hoisting of heavy equipment in other construction fields.
The utility model discloses in, to in the aircraft rescue hoist and mount operation, still provide an adjustable auxiliary girder structure and protect, more have corresponding and suitability to aircraft rescue operation.
As shown in fig. 1-2, an adjustable secondary beam structure comprises a secondary suspension beam 1 and pulley assemblies 2 as described above, wherein at least one group of pulley assemblies 2 is provided, and the adjustable secondary beam structure further comprises steel wire ropes 3 sequentially passing through the pulley assemblies 2; the method is characterized in that: the pulley assemblies 2 can be respectively connected to the lower ends of the auxiliary hoisting beams 1 in a sliding way.
In the pulley assembly 2, the upper end of the first mounting bracket 211 in the fixed pulley unit 21 is provided with a sliding part 213, and the first mounting bracket 211 is slidably connected to the lower end of the auxiliary suspension beam 1 through the sliding part 213.
In the present invention, the sliding connection between the sliding connection part 213 and the lower end of the auxiliary hanging beam 1 can be made in various forms, for example, the sliding connection part 213 can be a roller, and the lower end of the auxiliary hanging beam 1 is provided with a roller cooperating with the lower end; or the sliding part 213 is a sliding block, and the lower end of the auxiliary hanging beam 1 is provided with a sliding groove matched with the sliding part, so long as the sliding connection can be realized.
Preferably, in order to facilitate the processing and improve the strength and stability of the structure, in this embodiment, the sliding portion 213 includes a sliding groove 2131, the lower end of the auxiliary hanging beam 1 is provided with a sliding edge 11, the sliding edge 11 matches with the shape of the sliding groove 2131, and the sliding portion 213 is suspended and clamped on the sliding edge 11 through the sliding groove 2131.
Specifically, the sliding groove 2131 includes at least one horizontally extending clamping groove section 21311, the lower end of the auxiliary hanging beam 1 is provided with at least one horizontally extending sliding edge 11, and the sliding edge 11 is clamped in the clamping groove section 21311. For example, the sliding groove 2131 may be a T-shaped notch, an L-shaped notch, a "straight" notch, or the like, and the sliding edge 11 may be provided with one or two symmetrically/asymmetrically, or the like, so as to meet the requirement that the shape of the notch matches with the shape of the lower end clamp of the auxiliary hanging beam 1.
In this embodiment, as shown in fig. 3, 4, and 9, the sliding connection portion 213 includes two "Contraband" shaped plates fixedly connected to the upper end of the first mounting frame 211, the two "Contraband" shaped plates are oppositely mounted to enclose and form an inverted "T" shaped sliding slot 2131 with an upward notch, the lower end of the auxiliary hanging beam 1 is provided with sliding connection edges 11 horizontally extending to both sides, the sliding connection edges 11 on both sides are mounted in a one-to-one corresponding manner with the notches of the two "Contraband" shaped plates, so that the lower end of the auxiliary hanging beam 1 is just embedded with the notch of the inverted "T" shaped sliding slot 2131 in the sliding connection portion 213, and when the pulley 222 assembly 2 is pushed, the sliding connection portion 213 can slide linearly along the sliding connection edge 11 at the lower end of the auxiliary hanging beam 1.
Preferably, the two ends of the secondary suspension beam 1 are respectively provided with a limiting piece 13. In this embodiment, vice hanging beam 1 is formed by high-quality steel processing, and locating part 13 mainly plays spacing effect of blocky or the column structure of rigid coupling in vice hanging beam 1 for the welding or can dismantle, and loose pulley assembly 2 accident drops when preventing that vice hanging beam 1 from inclining, causes personnel and unnecessary injury. The fixed point of the steel wire rope 3 is also arranged on the auxiliary hanging beam 1, so that the length of the auxiliary hanging beam is convenient to adjust.
Preferably, the upper end of the auxiliary hanging beam 1 is provided with a lifting lug 14, so that the installation is convenient.
Preferably, the auxiliary girder 1 is provided at both ends thereof with a rope guide wheel 12, respectively. The rope guide wheel 12 is arranged at the tail end of the auxiliary hanging beam 1, the steel wire rope 3 bypasses the rope guide wheel 12, and when the steel wire rope 3 is drawn, the preliminary guide effect is achieved on the steel wire rope 3.
The adjustable auxiliary beam structure is suitable for hoisting operation of various aircrafts; in this embodiment, ten sets of pulley assemblies 2 are provided, the steel wire rope 3 is led out by the rope guide wheel 12 and then sequentially passes through each pulley assembly 2, and the lower end of the movable pulley 222 assembly 2 is directly connected with the body sling through the lifting hook 223. When the aircraft is hoisted for operation, firstly, the pulley assemblies 2 with proper quantity are selected according to the size of the aircraft to be disassembled, namely the fixed pulley unit 21 and the adjustable pulley unit 22 are disassembled, and when the fixed pulley unit 21 and the adjustable pulley unit 22 are required to be disassembled into a plurality of groups, only the connecting pin 23 needs to be disassembled, the first installation frame 211 and the second installation frame 221 are separated, the two ends of the steel wire rope 3 are loosened, so that the adjustable pulley unit 22 descends to proper height, at the moment, the adjustable pulley unit 22 is connected and hung at proper height below the fixed pulley unit 21 by the steel wire rope 3, the two ends of the steel wire rope 3 are fixed at the two ends of the auxiliary hanging beam 1, and the.
In addition, the pulley assemblies 2 can slide along the lower ends of the auxiliary hanging beams 1, the positions of the pulley assemblies 2 on the auxiliary hanging beams 1 can be adjusted according to use requirements, the number of the pulley assemblies 2 can be selected, and the hanging height of the hanging hooks 223 can be adjusted, so that the device is suitable for all positions of an aircraft body, an aircraft body hanging strip is perfectly attached to the aircraft body, various aircraft hanging operations can be completed by selecting the number of different pulley assemblies 2 and matching with the aircraft body hanging strip, and when the number of the aircraft body hanging strips changes due to the change of the model of the rescue aircraft, redundant pulley assemblies 2 do not need to be detached; the efficiency is improved, and the manpower labor is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pulley assembly (2) comprising a fixed pulley unit (21) and an adjustable pulley unit (22); the method is characterized in that: the fixed pulley unit (21) and the adjustable pulley unit (22) are detachably connected together;
the fixed pulley unit (21) comprises a first mounting frame (211) and a fixed pulley (212) rotatably mounted in the first mounting frame (211), and the adjustable pulley unit (22) comprises a second mounting frame (221), a movable pulley (222) rotatably mounted in the second mounting frame (221), and a hook (223) fixedly connected to the lower end of the second mounting frame (221); the second mounting frame (221) is detachably connected with the first mounting frame (211).
2. The sheave assembly (2) of claim 1, wherein: the number of the fixed pulleys (212) is two, the two fixed pulleys (212) are independently and rotatably and coaxially mounted in the first mounting frame (211), the first mounting shaft (2113) horizontally penetrates through the first mounting frame (211), and the two fixed pulleys (212) penetrate through the first mounting shaft (2113) side by side; a second mounting shaft (2213) is horizontally arranged in the second mounting frame (221) in a penetrating manner, and the movable pulley (222) is mounted on the second mounting shaft (2213); meanwhile, the first installation shaft (2113) and the second installation shaft (2213) are located in the same vertical plane and arranged in parallel.
3. The sheave assembly (2) of claim 2, wherein: the first mounting frame (211) comprises two first side plates (2111) which are arranged in parallel, and a first mounting shaft (2113) horizontally penetrates through the two first side plates (2111);
the second mounting frame (221) comprises two second side plates (2211) which are arranged in parallel, and a second mounting shaft (2213) horizontally penetrates through the two second side plates (2211);
a first pin hole (21111) is formed in the first side plate (2111), a second pin hole (22111) corresponding to the first pin hole (21111) in a one-to-one mode is formed in the second side plate (2211), and the first side plate (2111) and the second side plate (2211) are detachably connected together through a connecting pin (23).
4. The sheave assembly (2) of claim 3, wherein: a reinforcing rib plate (2114) is arranged on the surface of the first side plate (2111);
lightening holes are formed in the first side plate (2111) and the second side plate (2211).
5. The sheave assembly (2) according to claim 2 or 4, characterized in that: the central axis (2221) of the mounting hole of the movable pulley (222) is not perpendicularly intersected with the spoke surface (2222) of the mounting hole, and a guide groove (2220) extending along the circumferential direction is arranged on the rim surface (2223) of the movable pulley (222).
6. An adjustable secondary beam structure, which comprises a secondary hanging beam (1) and pulley assemblies (2) according to any one of claims 1-5, wherein at least one group of the pulley assemblies (2) is provided, and the adjustable secondary beam structure further comprises steel wire ropes (3) which sequentially penetrate through the pulley assemblies (2); the method is characterized in that: the pulley components (2) can be respectively connected to the lower ends of the auxiliary hoisting beams (1) in a sliding manner.
7. The adjustable secondary beam structure of claim 6, wherein: in the pulley assembly (2), a sliding connection part (213) is arranged at the upper end of a first mounting frame (211) in a fixed pulley unit (21), and the first mounting frame (211) is connected to the lower end of an auxiliary hanging beam (1) in a sliding mode through the sliding connection part (213).
8. The adjustable secondary beam structure of claim 7, wherein: the sliding connection part (213) comprises a sliding groove (2131), a sliding connection edge (11) is arranged at the lower end of the auxiliary hanging beam (1), the shape of the sliding connection edge (11) is matched with that of the sliding groove (2131), and the sliding connection part (213) is suspended and clamped on the sliding connection edge (11) through the sliding groove (2131).
9. The adjustable secondary beam structure of claim 8, wherein: the sliding groove (2131) comprises at least one horizontally extending clamping groove section (21311), the lower end of the auxiliary hanging beam (1) is provided with at least one horizontally extending sliding connection edge (11), and the sliding connection edge (11) is clamped in the clamping groove section (21311).
10. The adjustable secondary beam structure of claim 6, wherein: two ends of the auxiliary hanging beam (1) are respectively provided with a limiting piece (13); the upper end of the auxiliary hanging beam (1) is provided with a lifting lug (14); two ends of the auxiliary hanging beam (1) are respectively provided with a rope guide wheel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399341.1U CN212374778U (en) | 2020-03-25 | 2020-03-25 | Pulley assembly and adjustable auxiliary beam structure comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399341.1U CN212374778U (en) | 2020-03-25 | 2020-03-25 | Pulley assembly and adjustable auxiliary beam structure comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212374778U true CN212374778U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020399341.1U Active CN212374778U (en) | 2020-03-25 | 2020-03-25 | Pulley assembly and adjustable auxiliary beam structure comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN212374778U (en) |
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2020
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