Device for hoisting rod type transformer

Abstract

The utility model provides a device for hoisting a pole type transformer, which comprises a bracket, and the bracket comprises two electric poles arranged at intervals and a transverse support between the two electric poles; the force bearing connecting assembly comprises an adjustable force bearing cable and a hoisting cable, and the two ends of the adjustable force bearing cable are fixed to the upper portions of the two electric poles respectively. The manual lifting mechanism is hung on the middle section of the adjustable bearing cable, and the load end of the manual lifting mechanism is connected with the transformer to be hoisted through the hoisting cable; the two-way traction cable comprises a first traction cable and a second traction cable which are respectively fixed at the end part of an operation unit of the manual lifting mechanism; the first traction cable extends in the vertical upward direction and bypasses the transverse support between the two electric poles, and the second traction cable extends in the vertical downward direction. According to the utility model, the safe hoisting of the transformer is realized through the alternate traction driving of the bidirectional traction cable and the mechanical transmission of the manual lifting mechanism. Compared with hoisting of other pole type transformers, the pole type transformer hoisting device is not limited by terrains, and construction machinery cost is greatly saved.

Description

Technical Field

[0001] This utility model belongs to the field of transformer hoisting technology, specifically relating to a device for hoisting pole-type transformers. Background Technology

[0002] Typically, hoisting pole-mounted transformers requires a crane or winch to lift the entire transformer and mount it onto the pole using supports. However, due to the large size of cranes, the flatness and slope of the ground are crucial during hoisting. Pole-mounted transformers are generally installed in locations with small capacity and dispersed loads, often in remote areas with uneven terrain, making it difficult for large machinery to access the site. In such cases, using a winch for transformer hoisting is also problematic due to its weight, especially in mountainous terrain. In these situations, manual hoisting using pulleys is necessary, requiring a large number of workers. Furthermore, the transformer's weight means that improper direction or force application could easily compromise worker safety. Utility Model Content

[0003] The purpose of this utility model is to overcome the problems in the existing technology, such as the large environmental limitations of mechanical hoisting operations and the difficulty in ensuring the safety and economy of purely manual hoisting operations. This utility model proposes a device for hoisting pole-type transformers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for hoisting a pole-mounted transformer, comprising:

[0006] The support structure includes two spaced-apart poles and lateral supports between the two poles.

[0007] The load-bearing connection assembly includes an adjustable load-bearing cable and a hoisting cable, wherein the two ends of the adjustable load-bearing cable are respectively fixed to the upper part of the two poles;

[0008] The manual lifting mechanism is suspended in the middle of the adjustable load-bearing cable, and the load end of the manual lifting mechanism is connected to the transformer to be lifted through the hoisting cable.

[0009] The bidirectional traction cable includes a first traction cable and a second traction cable, which are respectively fixed to the end of the operating unit of the manual lifting mechanism; the first traction cable extends vertically upward and passes around the lateral support between the two poles, and the second traction cable extends vertically downward.

[0010] Furthermore, the manual lifting mechanism includes a suspension hook, a load hook, an operating unit, a power transmission unit, and a transmission unit linked to the power transmission unit. The suspension hook is connected to the middle section of the adjustable load-bearing cable. The load hook is connected to the hoisting cable through the transmission unit. The two ends of the hoisting cable are connected to the transformer to be hoisted. The power transmission unit responds to the reciprocating motion of the operating unit and drives the transmission unit to perform lifting and lowering actions.

[0011] Furthermore, the operating unit is connected to the power transmission unit via a linkage mechanism.

[0012] Preferably, the linkage mechanism is a crank-connecting rod structure, which converts the reciprocating oscillation of the operating unit into the unidirectional rotational motion of the gear set of the driving power transmission unit.

[0013] Preferably, the power transmission unit includes a main gear and a driven gear that mesh with each other. The main gear is linked with the operating unit, and the driven gear meshes with the chain of the transmission unit and is integrated into a one-way ratchet mechanism.

[0014] Preferably, the load hook is a self-locking hook, and its open side is provided with an anti-detachment baffle that is reset by a torsion spring. The closing direction of the anti-detachment baffle is opposite to the lifting direction of the transmission unit.

[0015] Preferably, the length of the adjustable load-bearing cable is adjustable, and both ends of the adjustable load-bearing cable are respectively connected and fixed to the pole by locking devices.

[0016] Preferably, the lateral support is provided with a guide pulley, and the first traction cable passes through the guide pulley to form a return traction path.

[0017] Preferably, a pull ring may be provided at the end of the first traction cable.

[0018] Preferably, a counterweight can be connected to the end of the second traction cable.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The device for hoisting pole transformers described in this utility model has a simple composition. The operating unit is linked with the bidirectional traction cable. The lifting operation can be completed by a single "pull-reset" action, and no professional training is required to operate it. Compared with the hoisting of other pole transformers, it is not limited by the terrain and greatly saves the cost of construction machinery.

[0021] (2) The size of the manual lifting mechanism can be adjusted according to the mass of the transformer to be hoisted, and the original length of the transmission chain of the manual lifting mechanism can be dynamically adjusted according to the placement position of the pole transformer bracket.

[0022] (3) By replacing the load-bearing cables and transmission chains of different specifications, the hoisting requirements of transformers with capacities ranging from 50kVA to 500kVA can be met.

[0023] (4) The anti-detachment baffle of the self-locking hook closes automatically under the action of the torsion spring, completely eliminating the risk of transformer detachment during hoisting.

[0024] (5) The device for hoisting pole transformer described in this utility model has a bidirectional traction cable with the force direction being vertically upward and vertically downward. Through the mechanical optimization design of the guide pulley and counterweight, a single person can complete the entire operation, which significantly improves the traction efficiency. Attached Figure Description

[0025] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a hoisting rod type transformer device provided by this utility model.

[0027] Figure 2 This is a schematic diagram of the manual lifting mechanism.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Manual lifting mechanism; 101. Suspension hook; 102. Load hook; 103. Operating unit; 104. Power transmission unit; 105. Transmission unit; 106. Linkage mechanism; 107. Anti-detachment baffle;

[0030] 201. Adjustable load-bearing cable; 202. Lifting cable;

[0031] 301. First traction cable; 302. Second traction cable;

[0032] 4. Utility poles;

[0033] 5. Transformer to be hoisted;

[0034] 6. Lateral support. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0036] Example 1

[0037] Please refer to Figure 1 A device for hoisting a pole-mounted transformer, comprising:

[0038] The support includes two spaced-apart poles 4 and a lateral support 6 between the two poles 4;

[0039] The load-bearing connection assembly includes an adjustable load-bearing cable 201 and a hoisting cable 202, wherein the two ends of the adjustable load-bearing cable 201 are respectively fixed to the upper part of the two poles 4;

[0040] The manual lifting mechanism 1 is suspended in the middle of the adjustable load-bearing cable 201. The load end of the manual lifting mechanism 1 is connected to the transformer 5 to be lifted through the hoisting cable 202.

[0041] A bidirectional traction cable, connected to the operating end of the manual lifting mechanism 1 and configured for bidirectional traction, specifically includes a first traction cable 301 and a second traction cable 302, respectively fixed to the end of the operating unit 103 of the manual lifting mechanism 1. The first traction cable 301 extends vertically upward and passes over the transverse support 6 between the two poles 4, while the second traction cable 302 extends vertically downward (extending to near the ground). The operator alternately pulls the first traction cable 301 and the second traction cable 302 on the ground. Because the bidirectional traction cable is fixed to the operating unit 103, the up-and-down movement of the bidirectional traction cable applies alternating upward and downward forces to the operating unit 103, causing the operating unit 103 to swing back and forth. The power transmission unit of the manual lifting mechanism 1 responds to the reciprocating motion of the operating unit 103 and drives the transmission unit 105 of the manual lifting mechanism 1 to perform lifting and lowering actions, thereby lifting the entire transformer.

[0042] The device for hoisting pole-mounted transformers provided by this utility model utilizes the alternating traction drive of bidirectional traction cables and the mechanical transmission of a manual lifting mechanism 1. The transformer can be safely hoisted through a single "pull-down-reset" action. No professional training is required for operation, and it does not rely on cranes or winches. Through the alternating traction of the first traction cable 301 and the second traction cable 302, the operator can remotely control the reciprocating movement of the operating unit 103 from the ground, eliminating the need to climb poles. This is particularly suitable for the installation needs of pole-mounted transformers in dangerous environments such as mountains, hills, and muddy terrain. Compared to the hoisting of other pole-mounted transformers, it is not limited by terrain and significantly reduces construction machinery costs.

[0043] Example 2

[0044] The device for hoisting a transformer provided in Embodiment 1 is further optimized. Specifically, the structure of the manual lifting mechanism 1 is disclosed, as follows: Figure 2 As shown, the manual lifting mechanism 1 includes a suspension hook 101, a load hook 102, an operating unit 103, a power transmission unit 104, and a transmission unit 105 linked to the power transmission unit 104. The suspension hook 101 is connected to the middle section of the adjustable load-bearing cable 201. The load hook 102 is connected to the hoisting cable 202 through the transmission unit 105. The two ends of the hoisting cable 202 are connected to the transformer 5 to be hoisted. The power transmission unit 104 responds to the reciprocating motion of the operating unit 103 and drives the transmission unit 105 to perform lifting and lowering actions.

[0045] In this embodiment, the transmission unit 105 is preferably a closed-loop chain structure, and the power transmission unit 104 is a double rack and pinion drive mechanism, specifically including a meshing main gear and a driven gear. The main gear is linked with the operating unit 103, and the driven gear meshes with the chain of the transmission unit 105 and integrates into a one-way ratchet mechanism. The ratchet teeth are preferably trapezoidal to prevent the chain from sliding in the opposite direction. During alternating traction, the one-way ratchet mechanism automatically locks the chain to prevent the load from slipping unexpectedly.

[0046] The working principle of this utility model is as follows:

[0047] The adjustable load-bearing cable 201 is fixed at both ends to the upper part of the pole 4. The manual lifting mechanism 1 is suspended in the middle part of the adjustable load-bearing cable 201. Specifically, the suspension hook 101 is hung in the middle section of the adjustable load-bearing cable 201. The load hook 102 of the manual lifting mechanism 1 is connected to the hoisting cable 202 through the transmission unit 105. The two ends of the hoisting cable 202 are connected to the lifting lugs of the transformer 5 to be hoisted, forming a closed-loop load transmission path.

[0048] The first traction cable 301 of the bidirectional traction cable extends from the top of the operating unit 103, passes upward around the transverse support 6 between the two poles, and forms a high-level traction path; the second traction cable 302 extends vertically downward from the bottom of the operating unit 103, forming a low-level traction path. When the operator pulls the first traction cable 301 downward, the operating unit 103 swings upward, driving the main gear of the power transmission unit 104 to rotate counterclockwise, which in turn drives the driven gear of the power transmission unit 104 and the chain of the transmission unit 105 to rise; a counterweight can be configured at the end of the second traction cable 302 to assist in resetting, that is, using gravity to pull the operating unit 103 down to return it to the initial position, completing a single lifting stroke.

[0049] Example 3

[0050] Based on Embodiment 2, this embodiment further optimizes the device for a hoisting rod transformer. Specifically, the operating unit 103 is disclosed as an operating handle, which is connected to the power transmission unit 104 via a linkage mechanism 106. Furthermore, the linkage mechanism 106 is defined as a crank-connecting rod structure, which converts the reciprocating oscillation of the operating unit 103 into unidirectional rotational motion driving the gear set of the power transmission unit 104.

[0051] Example 4

[0052] The device for hoisting a pole-type transformer provided in the above embodiment is further optimized by disclosing that the load hook 102 is a self-locking hook, and its open side is provided with an anti-detachment baffle 107 that is reset by a torsion spring. The closing direction of the anti-detachment baffle 107 is opposite to the lifting direction of the transmission unit 105. When the load is hooked, the anti-detachment baffle 107 automatically closes under the action of the torsion spring to prevent the transformer from detaching due to shaking or tilting during hoisting; when unloading, the anti-detachment baffle 107 can be manually pushed open to release the lock.

[0053] Example 5

[0054] This embodiment is used to further optimize the device of the hoisting pole transformer under the premise of the above embodiment. Specifically, it discloses that the length of the adjustable load-bearing cable 201 is adjustable, and the two ends of the adjustable load-bearing cable 201 are respectively connected to the pole 4 through locking devices to achieve detachable connection, which supports quick disassembly and reuse, and significantly reduces construction preparation time and manpower input.

[0055] It is worth mentioning that the adjustable load-bearing cable 201 includes, but is not limited to, steel wire rope, synthetic fiber rope or chain.

[0056] By replacing the adjustable load-bearing cable 201 and the chain of the transmission unit 105 with different specifications, it can be adapted to the hoisting needs of transformers with capacities ranging from 50kVA to 500kVA.

[0057] Example 6

[0058] This embodiment is used to further optimize the device for hoisting pole transformers based on the above embodiments. Specifically, the bidirectional traction cable is defined as a split flexible traction structure, including two independently adjustable traction cables (first traction cable 301 and second traction cable 302). The ends of the first traction cable 301 and the second traction cable 302 are respectively provided with force-applying ends. Preferably, a pull ring can be provided at the end of the first traction cable 301, and a counterweight can be connected to the end of the second traction cable 302. The counterweight uses its own weight to automatically reset to the initial position when the operator releases the first traction cable 301 by pulling down the operating unit 103 through the second traction cable 302, thereby reducing the physical exertion of the operator.

[0059] It should be noted that the end of the first traction cable 301 may not be equipped with a pull ring, and the end of the second traction cable 302 may not be equipped with a counterweight. The operator can directly pull the first traction cable 301 and / or the second traction cable 302.

[0060] This embodiment further discloses that a guide pulley is set on the transverse support 6, and the first traction cable 301 passes through the guide pulley to form a return traction path. Through the mechanical optimization design of the guide pulley and the counterweight, a single person can complete the entire operation, and the traction efficiency is significantly improved.

Claims

1. A device for hoisting a pole-mounted transformer, characterized in that: include The support includes two spaced poles (4) and a lateral support (6) between the two poles (4). The load-bearing connection assembly includes an adjustable load-bearing cable (201) and a hoisting cable (202), wherein the two ends of the adjustable load-bearing cable (201) are respectively fixed to the upper part of two poles (4); The manual lifting mechanism (1) is suspended in the middle of the adjustable load-bearing cable (201). The load end of the manual lifting mechanism (1) is connected to the transformer (5) to be lifted through the hoisting cable (202). The bidirectional traction cable includes a first traction cable (301) and a second traction cable (302), which are respectively fixed to the end of the operating unit (103) of the manual lifting mechanism (1); the first traction cable (301) extends vertically upward and passes around the transverse support (6) between the two poles (4), and the second traction cable (302) extends vertically downward.

2. The device for hoisting a pole-type transformer as described in claim 1, characterized in that: The manual lifting mechanism (1) includes a suspension hook (101), a load hook (102), an operating unit (103), a power transmission unit (104), and a transmission unit (105) linked with the power transmission unit (104). The suspension hook (101) is connected to the middle section of the adjustable load-bearing cable (201). The load hook (102) is connected to the hoisting cable (202) through the transmission unit (105). The two ends of the hoisting cable (202) are connected to the transformer (5) to be hoisted. The power transmission unit (104) responds to the reciprocating motion of the operating unit (103) and drives the transmission unit (105) to perform lifting and lowering actions.

3. The device for hoisting a pole-type transformer as described in claim 2, characterized in that: The operating unit (103) is connected to the power transmission unit (104) via a linkage mechanism (106).

4. The device for hoisting a pole-type transformer as described in claim 3, characterized in that: The linkage mechanism (106) is a crank-connecting rod structure, which converts the reciprocating oscillation of the operating unit (103) into the unidirectional rotational motion of the gear set of the driving power transmission unit (104).

5. The device for hoisting a pole-type transformer as described in claim 2, characterized in that: The power transmission unit (104) includes a main gear and a driven gear that mesh with each other. The main gear is linked with the operating unit (103), and the driven gear meshes with the chain of the transmission unit (105) and integrates into a one-way ratchet mechanism.

6. The device for hoisting a pole-type transformer as described in claim 2, characterized in that: The load hook (102) is a self-locking hook, and its open side is provided with an anti-disengagement baffle (107) that is reset by a torsion spring. The closing direction of the anti-disengagement baffle (107) is opposite to the lifting direction of the transmission unit (105).

7. The device for hoisting a pole-type transformer as described in claim 1, characterized in that: The length of the adjustable load-bearing cable (201) is adjustable, and both ends of the adjustable load-bearing cable (201) are respectively connected and fixed to the pole (4) by locking devices.

8. The apparatus for hoisting a pole-type transformer as described in any one of claims 1-7, characterized in that: The transverse support (6) is provided with a guide pulley, and the first traction cable (301) passes through the guide pulley to form a return traction path.

9. The apparatus for hoisting a pole-type transformer as described in any one of claims 1-7, characterized in that: A pull ring may be provided at the end of the first traction cable (301).

10. The apparatus for hoisting a pole-type transformer as described in any one of claims 1-7, characterized in that: The end of the second traction cable (302) can be connected to a counterweight.

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