Telescopic mechanical suspension arm

Abstract

The invention relates to the technical field of electrical equipment hoisting devices, and particularly discloses a telescopic mechanical suspension arm which comprises a suspension arm body, a hydraulic telescopic rod, a winding assembly and a base. The suspension arm main body comprises a plurality of suspension arms; the plurality of lifting arms are sequentially connected in a sliding manner; the lazy arm at the tail end of the plurality of lazy arms is arranged on the base; one end of the hydraulic telescopic rod is connected with the lazy arm at the tail end, and the other end of the hydraulic telescopic rod is connected with the lazy arm at the head end; the winding assembly comprises a winding motor and a winding rope; the winding motor is arranged on the base or the suspension arm at the tail end; one end of the winding rope is connected with the winding motor, and the other end of the winding rope is connected with the headmost suspension arm. According to the scheme, the suspension arm body can extend in a narrow area in a transformer substation through the hydraulic telescopic rod for operation; in the contraction process of the hydraulic telescopic rod, the winding motor can drive the winding rope to be wound, the lifting arm body and the hydraulic telescopic rod are pulled in an auxiliary mode to contract, and the situation that the hydraulic telescopic rod is not retracted thoroughly is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment hoisting devices, and in particular to a telescopic mechanical boom. Background Art

[0002] At present, in the process of power system construction, transformation, operation and maintenance, it is often necessary to install or replace the equipment to be installed or the faulty equipment in the power system. In the actual operation process, when replacing the porcelain column equipment such as 220kV lightning arrester, CVT, pillar insulator, etc. in the substation, it is often necessary to use a crane to lift and the maintenance personnel to climb to cooperate with the direction of operation.

[0003] In actual applications, there are many areas with complex terrain or narrow space in the substation, so the crane's lifting arm needs to have a telescopic function. The telescopic structure of the lifting arm is generally controlled by a hydraulic rod. As the lifting arm and the hydraulic rod age during use, it is easy for the hydraulic rod to be unable to be fully retracted due to increased resistance, etc., which limits the working range of the lifting arm. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a telescopic mechanical boom, which is used to solve the problem of incomplete retraction of the hydraulic rod in the existing lifting arm.

[0005] In order to achieve the above technical purpose, the present application provides a telescopic mechanical boom, comprising: a boom body, a hydraulic telescopic rod, a winding assembly and a base;

[0006] The boom body comprises: a plurality of booms;

[0007] The multiple booms are slidably connected in sequence;

[0008] The tailmost suspension arm among the plurality of suspension arms is arranged on the base;

[0009] One end of the hydraulic telescopic rod is connected to the boom at the rear end, and the other end of the hydraulic telescopic rod is connected to the boom at the front end;

[0010] The winding assembly comprises: a winding motor and a winding rope;

[0011] The winding motor is arranged on the base or the boom at the rear end;

[0012] One end of the winding rope is connected to the winding motor, and the other end of the winding rope is connected to the boom at the front end.

[0013] Further, the hydraulic telescopic rod comprises: a plurality of sleeve rods;

[0014] The plurality of sleeve rods are slidably connected in sequence, and the interiors of the plurality of sleeve rods are interconnected.

[0015] Further, the number of the plurality of sleeve rods is consistent with the number of the plurality of suspension arms;

[0016] One end of the plurality of suspension arms close to the extending direction is fixedly connected with one end of the plurality of sleeve rods close to the extending direction in a one-to-one correspondence.

[0017] Furthermore, a lifting ring is provided at one end of the lifting arm close to the extending direction;

[0018] The sleeve rod is fixedly sleeved in the lifting ring.

[0019] Furthermore, each of the suspension arms is provided with a locking structure;

[0020] The locking structure is used to restrict the two adjacent suspension arms from sliding relative to each other in a locked state.

[0021] Furthermore, a guide plate is provided on the boom;

[0022] The winding rope passes through the guide plate.

[0023] Further, it also includes a hydraulic cylinder;

[0024] The boom at the rear end is rotatably arranged on the base in a vertical direction;

[0025] The hydraulic cylinder can be telescopically arranged;

[0026] One end of the hydraulic cylinder is rotatably connected to the base;

[0027] The other end of the hydraulic cylinder can be rotatably connected to the boom at the rear end.

[0028] Furthermore, the base is provided with a hollow hole;

[0029] The hollow hole is used for the hydraulic pipe to pass through.

[0030] Furthermore, the cross-section of the boom is U-shaped.

[0031] Furthermore, the winding rope is a steel wire rope.

[0032] It can be seen from the above technical scheme that the present application provides a telescopic mechanical boom, comprising: a boom body, a hydraulic telescopic rod, a winding assembly and a base; the boom body comprises: a plurality of booms; the plurality of booms are slidably connected in sequence; the boom at the tail end of the plurality of booms is arranged on the base; one end of the hydraulic telescopic rod is connected to the boom at the tail end, and the other end of the hydraulic telescopic rod is connected to the boom at the head end; the winding assembly comprises: a winding motor and a winding rope; the winding motor is arranged at the base or the boom at the tail end; one end of the winding rope is connected to the winding motor, and the other end of the winding rope is connected to the boom at the head end.

[0033] In this solution, the boom body can be extended to operate in a narrow area within the substation through a hydraulic telescopic rod; during the retraction of the hydraulic telescopic rod, the winding motor can drive the winding rope to assist in pulling the boom body and the hydraulic telescopic rod to retract, thereby avoiding the situation where the hydraulic telescopic rod is not completely retracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic diagram of a telescopic mechanical boom in an extended state provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of a telescopic mechanical boom in a retracted state provided in an embodiment of the present application;

[0037] Figure 3 An enlarged view of the tail end of a telescopic mechanical boom provided in an embodiment of the present application;

[0038] Figure 4 for Figure 2 a right side view of the structure shown;

[0039] Figure 5 An enlarged view of the head end of a telescopic mechanical boom provided in an embodiment of the present application;

[0040] Figure 6 A side view of the base of a telescopic mechanical boom provided in an embodiment of the present application;

[0041] Figure 7 A top perspective view of a boom body of a telescopic mechanical boom provided in an embodiment of the present application;

[0042] In the figure:

[0043] 10. Boom body; 11. Boom; 12. Lifting ring; 13. Guide plate; 14. Lifting plate; 15. Lifting rope shaft; 16. Lifting rope; 17. Lock hole; 18. Locking column; 19. Locking column spring;

[0044] 20. Hydraulic telescopic rod; 21. Sleeve rod;

[0045] 30. Reeling assembly; 31. Reeling motor; 32. Reeling rope;

[0046] 40. base; 41. hollow hole; 42. support base;

[0047] 50. Hydraulic cylinder. DETAILED DESCRIPTION

[0048] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0049] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0050] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0051] See also Figures 1 to 4 A telescopic mechanical boom provided in an embodiment of the present application includes: a boom body 10, a hydraulic telescopic rod 20, a winding assembly 30 and a base 40.

[0052] The boom body 10 includes: a plurality of booms 11; the plurality of booms 11 are slidably connected in sequence. The booms 11 and 11 can be connected in a sleeve manner, so that the boom 11 at the front end of the extending direction can completely slide into the boom 11 at the rear end of the extending direction. In this embodiment, the extending direction is Figure 1 Correspondingly, a limit piece may be provided at the end of the boom 11; when the boom body 10 is retracted to the shortest, the limit pieces on adjacent booms 11 abut against each other. The limit piece may be, for example, the following lifting ring 12 and / or lifting plate 14.

[0053] Among the multiple booms 11, the most tail boom 11 is arranged on the base 40; one end of the hydraulic telescopic rod 20 is connected to the most tail boom 11, and the other end of the hydraulic telescopic rod 20 is connected to the most head boom 11. When the hydraulic telescopic rod 20 is extended or retracted, the multiple booms 11 can be driven to slide and retract or retract.

[0054] The winding assembly 30 includes a winding motor 31 and a winding rope 32. The winding motor 31 is disposed on the base 40 or the endmost boom 11. One end of the winding rope 32 is connected to the winding motor 31, and the other end of the winding rope 32 is connected to the endmost boom 11. In application, the winding rope 32 can be a steel wire rope.

[0055] As an embodiment, the output end of the winding motor 31 can be connected to a drum; the drum can be rotatably set on the base 40 or the tailmost boom 11. The winding rope 32 is wound on the drum. The winding motor 31 drives the drum to rotate to drive the release or reeling of the winding rope 32. Among them, the output end of the winding motor 31 can be connected to the drum through a one-way transmission structure such as a ratchet, so that the drum does not interfere with the output end of the winding motor 31 when rotating in the release direction, and when the winding motor 31 is started, the drum can be driven to rotate through the above-mentioned one-way transmission structure. The one-way transmission structure used here is a prior art and is not described in detail in this embodiment.

[0056] In this embodiment, when the hydraulic telescopic rod 20 is extended, the hydraulic telescopic rod 20 can drive the multiple booms 11 to slide and extend, and at the same time drive the winding rope 32 to extend; when the hydraulic telescopic rod 20 is retracted, the hydraulic telescopic rod 20 can drive the multiple booms 11 to slide and retract, and at the same time the winding motor 31 is started to drive the winding rope 32 to shorten, so as to assist the recovery sliding of the boom body 10 and the hydraulic telescopic rod 20.

[0057] In actual application, the hydraulic telescopic rod 20 and the boom body 10 age, and the resistance of both during sliding and telescoping will increase; at the same time, in long-term use, it is inevitable that debris will enter the gap between the hydraulic telescopic rod 20 and the boom 11, which will further increase the resistance of recovery. The telescopic mechanical boom provided in this embodiment can reduce the resistance of the hydraulic telescopic rod 20 during the contraction process by winding the rope 32, avoid the situation that the hydraulic telescopic rod 20 and the boom body 10 are not completely recovered, and thus extend the service life of the hydraulic telescopic rod 20 and the boom body 10.

[0058] It should be noted that the extension and retraction control of the hydraulic telescopic rod 20 can be performed by an external control host; the start and stop and starting power of the winding motor 31 are also performed by the control host; the control host can achieve the consistency of the winding rate of the winding motor 31 and the contraction rate of the hydraulic telescopic rod 20 through the existing algorithm, and the specific control process is not repeated in this embodiment.

[0059] In one embodiment, the base 40 may be disposed on a vehicle body and connected to the vehicle body via a rotating connection pair, so that the base 40 can rotate in a horizontal direction relative to the vehicle body, thereby driving the boom body 10 to rotate horizontally.

[0060] When the boom body 10 is in the retracted state, the front of the boom 11 along the extending direction can abut against each other, so that the boom body 10 can be placed on the vehicle body.

[0061] In one embodiment, the hydraulic telescopic rod 20 includes: a plurality of sleeve rods 21; the plurality of sleeve rods 21 are slidably connected in sequence, and the interiors of the plurality of sleeve rods 21 are interconnected.

[0062] Specifically, the hydraulic telescopic rod 20 is connected to a hydraulic pipe; hydraulic oil flows in the hydraulic pipe; the hydraulic oil can flow into the sleeve rod 21 to push the sleeve rod 21 to slide.

[0063] In one embodiment, the number of the multiple sleeve rods 21 is consistent with the number of the multiple booms 11; the ends of the multiple booms 11 close to the extending direction are fixedly connected one by one with the ends of the multiple sleeve rods 21 close to the extending direction, so that the sliding stroke and sliding speed of the multiple sleeve rods 21 and the multiple booms 11 remain consistent.

[0064] Optionally, a lifting ring 12 is provided at one end of the lifting arm 11 close to the extending direction; and the sleeve rod 21 is fixedly sleeved in the lifting ring 12 .

[0065] The lifting ring 12 is used for installing the sleeve rod 21 , and can also limit the sliding of the lifting arm 11 and the sleeve rod 21 .

[0066] In one embodiment, each suspension arm 11 is provided with a locking structure; the locking structure is used to restrict two adjacent suspension arms 11 from sliding relative to each other in a locked state.

[0067] When the locking structure is in the unlocked state, the adjacent booms 11 can slide relative to each other. When the boom body 10 is extended to a desired length, the length of the boom body 10 can be fixed by locking the locking structure.

[0068] Specifically, see Figure 7 , the locking structure provided in this embodiment may include: a lock hole 17, a lock column 18 and a lock column spring 19. In two adjacent suspension arms 11, one suspension arm 11 is sleeved in the other suspension arm 11, so that the two suspension arms 11 can slide relative to each other; wherein, the suspension arm 11 located on the inner side is provided with the above-mentioned lock hole 17; the suspension arm 11 located on the outer side is provided with the above-mentioned lock column 18; the lock column spring 19 is sleeved on the lock column 18, and abuts against the outer wall of the suspension arm 11 located on the inner side and is in an energy storage state. When the two suspension arms 11 slide relative to each other until the lock column 18 is aligned with the lock hole 17, the lock column 18 is inserted into the lock hole 17 by the elastic thrust of the lock column spring 19, so that the two adjacent suspension arms 11 are locked and fixed. It should be noted that a handle may be connected to the outer side of the lock column 18, so that the staff can pull the lock column 18 to release the lock connection between the lock column 18 and the lock hole 17.

[0069] In one embodiment, a guide plate 13 is provided on the boom 11 ; the winding rope 32 passes through the guide plate 13 .

[0070] Optionally, the guide plate 13 may be provided on each boom 11 , or may be provided on only part of the booms 11 .

[0071] Optionally, the guide plate 13 can be disposed on the lifting ring 12 as an extension of the lifting ring 12 .

[0072] The guide plate 13 can prevent the winding rope 32 from being entangled during the process of retracting and releasing.

[0073] In one embodiment, it also includes a hydraulic cylinder 50; the tail end boom 11 is rotatably arranged on the base 40 along the vertical direction; the hydraulic cylinder 50 is telescopically arranged; one end of the hydraulic cylinder 50 is rotatably connected to the base 40; the other end of the hydraulic cylinder 50 is rotatably connected to the tail end boom 11.

[0074] Specifically, one end of the hydraulic cylinder 50 can be connected to the base 40 through a through bolt pair, and the other end can also be connected to the tail end of the boom 11 through a through bolt pair, so that the hydraulic cylinder 50 can be extended and retracted while also being able to rotate relative to the boom 11 and the base 40.

[0075] The elevation angle of the boom body 10 can be adjusted by telescoping the hydraulic cylinder 50. In practical applications, when the hydraulic cylinder 50 telescopes and pushes the boom body 10 to a suitable elevation angle, the hydraulic telescopic rod 20 extends and pushes out the multiple booms 11 in the boom body 10 in sequence to achieve the required length and angle for work.

[0076] Optionally, a hollow hole 41 is provided on the base 40; the hollow hole 41 is used for the hydraulic pipe to pass through.

[0077] Correspondingly, the second hydraulic pipe connected to the hydraulic cylinder 50 also passes through the hollow hole 41. The hollow hole 41 can avoid the pipeline disorder and winding problems, so that the hollow hole 41 can be used as a unified accommodating area for the hydraulic pipe, simplifying the overall structure.

[0078] In application, a circle of holes can be opened on the base 40 for connection with the vehicle body. After the connection, a worm gear is used to control the rotation of the base 40 and the boom body 10.

[0079] In application, there may be a plurality of hollow holes 41 for a plurality of hydraulic pipes to pass through in a one-to-one correspondence; the hollow holes 41 may be a square structure to restrain the hydraulic pipes.

[0080] The diameter of the base is 530mm, and the hollow part in the middle is a square structure, which helps to solve the constraint problem of the hydraulic pipeline to a certain extent.

[0081] In one embodiment, the cross section of the boom 11 is U-shaped. The sleeve rod 21 can be partially embedded in the boom 11 and fit closely with the boom 11 .

[0082] The boom 11 is a bidirectional bending member that is mainly subjected to bending. When in use, the boom 11 is not only subject to the constraints of overall strength, rigidity, and stability, but also to local stability constraints. In this embodiment, the boom 11 adopts a U-shaped cross section, which has the following advantages:

[0083] 1. The U-shaped cross-section boom 11 has high strength and rigidity and can withstand large loads and pressures.

[0084] 2. The U-shaped cross-section of the boom 11 has good anti-deformation capability and can reduce the occurrence of deformation and distortion.

[0085] 3. The U-shaped cross-section boom 11 has the characteristic of uniform force, which can not only improve the overall stability and anti-yield capacity, but also does not need to set reinforcing ribs. Among them, the wall thickness of the U-shaped cross-section boom 11 is 20mm, the width of the first section of the boom 11 is 400mm, the width of the second section of the boom 11 is 360mm, and the width of the remaining booms 11 is similar.

[0086] 4. The U-shaped cross-section of the boom 11 can leave enough space for storing the winding rope 32 on the boom 11 and setting the winding motor 31.

[0087] In practical applications, each section of the boom 11 may be a hollow steel structure, so that the hydraulic telescopic rod 20 can be installed inside the boom 11 to control the telescopic movement of the boom.

[0088] In one embodiment, see Figures 1 to 5 A hanging plate 14 may be provided in front of the boom 11 at the head end in the extension direction; a rotatable hanging rope shaft 15 is provided on the hanging plate 14; one end of a hanging rope 16 is wound around the hanging rope shaft 15. The other end of the hanging rope 16 is connected to a hook. The rotation of the hanging rope shaft 15 can be controlled by a hanging rope motor provided on the boom body 10, and the hanging rope motor can drive the hanging rope to be rolled up or released when it rotates forward or reversely.

[0089] Optionally, the suspension rope rotating shaft 15 can be used to wind the suspension rope 16 that is not needed temporarily.

[0090] See also Figure 6 A support seat 42 for mounting the boom 11 and the hydraulic cylinder 50 is provided on the base 40. The support seat 42 may be a hollow structure, which is convenient for observing the state of the hydraulic pipe.

[0091] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A telescopic mechanical boom, characterized in that: include: A boom body (10), a hydraulic telescopic rod (20), a winding assembly (30) and a base (40); The boom body (10) comprises: a plurality of booms (11); A plurality of suspension arms (11) are slidably connected in sequence; The tailmost suspension arm (11) among the plurality of suspension arms (11) is arranged on the base (40); One end of the hydraulic telescopic rod (20) is connected to the boom (11) at the rear end, and the other end of the hydraulic telescopic rod (20) is connected to the boom (11) at the front end; The winding assembly (30) comprises: a winding motor (31) and a winding rope (32); The winding motor (31) is arranged on the base (40) or the rearmost end of the suspension arm (11); One end of the winding rope (32) is connected to the winding motor (31), and the other end of the winding rope (32) is connected to the boom (11) at the front end.

2. The telescopic mechanical boom according to claim 1, characterized in that: The hydraulic telescopic rod (20) comprises: a plurality of sleeve rods (21); The plurality of sleeve rods (21) are slidably connected in sequence, and the interiors of the plurality of sleeve rods (21) are interconnected.

3. The telescopic mechanical boom according to claim 2, characterized in that: The number of the plurality of sleeve rods (21) is consistent with the number of the plurality of suspension arms (11); One end of the plurality of suspension arms (11) close to the extending direction is fixedly connected with one end of the plurality of sleeve rods (21) close to the extending direction in a one-to-one correspondence.

4. The telescopic mechanical boom according to claim 3, characterized in that: A lifting ring (12) is provided at one end of the lifting arm (11) close to the extending direction; The sleeve rod (21) is fixedly sleeved in the suspension ring (12).

5. The telescopic mechanical boom according to claim 1, characterized in that: Each of the suspension arms (11) is provided with a locking structure; The locking structure is used to restrict two adjacent suspension arms (11) from sliding relative to each other in a locked state.

6. The telescopic mechanical boom according to claim 1, characterized in that: The suspension arm (11) is provided with a guide plate (13); The winding rope (32) passes through the guide plate (13).

7. The telescopic mechanical boom according to claim 1, characterized in that: Also included is a hydraulic cylinder (50); The suspension arm (11) at the rear end is rotatably disposed on the base (40) along a vertical direction; The hydraulic cylinder (50) is telescopically arranged; One end of the hydraulic cylinder (50) is rotatably connected to the base (40); The other end of the hydraulic cylinder (50) can be rotatably connected to the boom (11) at the rear end.

8. The telescopic mechanical boom according to claim 1 or 7, characterized in that: The base (40) is provided with a hollow hole (41); The hollow hole (41) is used for allowing a hydraulic pipe to pass through.

9. The telescopic mechanical boom according to claim 1, characterized in that: The cross section of the suspension arm (11) is U-shaped.

10. The telescopic mechanical boom according to claim 1, characterized in that: The coiled rope (32) is a steel wire rope.

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