Electric pole hoisting fixture

Abstract

The utility model provides a kind of electric pole hoisting fixture, including left clamp body, right clamp body and unlocking hook, left clamp body and right clamp body are rectangular frame structure, the middle part of left, right clamp body is hinged by hinged shaft, the upper end of left, right clamp body is equipped with hanging nose respectively, two hanging noses are connected by lifting rope, the middle part of lifting rope is equipped with rope sleeve, the lower end of left, right clamp body is equipped with the clamping plate of column surface respectively, the lower side of hinged shaft is equipped with the guide plate shaft parallel to hinged shaft by suspension bracket, the two sides of guide plate shaft are equipped with left guide plate and right guide plate respectively, guide plate shaft is hinged with the side of left guide plate and right guide plate respectively, unlocking hook can be automatically hooked on hinged shaft by left, right guide plate.The beneficial effects of the utility model are that, under the condition of limited conditions such as field, electric pole can be hoisted conveniently using crane or hoist, with the advantages of simple operation, labor saving and high safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a kind of electric pole hoisting fixture. BACKGROUND

[0002] Electric pole plays the role of supporting overhead conductor, and common electric pole includes wooden electric pole, cement electric pole, electric power tower and the like. With the shortage of wood and the improvement of electric pole technical requirements, reinforced concrete taper cement electric pole gradually replaces wooden electric pole and becomes the main electric pole type in electric power industry. Cement electric pole has the advantages of being solid and durable, corrosion-resistant, temperature difference-resistant, high-strength and crack-resistant, and at the same time, the self-weight of cement electric pole is relatively large, which has the disadvantage of inconvenient operation in transportation and installation.

[0003] The hoisting of cement electric pole in the prior art is carried out by crane or hoist, especially in the field operation with limited conditions. In the hoisting process, the electric pole is first sleeved with a rope, and then the electric pole is hoisted from one site to another site by crane or hoist. Before hoisting, the rope needs to be sleeved with the electric pole, and after hoisting to the target site, the electric pole is put down, and the rope needs to be removed from the boom. For the electric pole with large self-weight, the above operation is very difficult, which greatly limits the production efficiency.

[0004] In addition, when hoisted to the target site, the landing process of the electric pole needs to be assisted by ground operators to remove the rope. In the actual operation process, the landing site of the electric pole is not necessarily a very flat site. When the boom lands, the rope loses the pulling force provided by the crane or hoist, the connection between the rope and the electric pole is very unstable, and the electric pole is very easy to slip or roll and hurt people. SUMMARY

[0005] The present application provides a kind of electric pole hoisting fixture, which is used in cooperation with crane or hoist to load and unload electric pole and short-distance hoist, has the advantages of convenient operation, labor saving and high safety, can adapt to complex working conditions, and is especially suitable for application in the case of limited field operation conditions.

[0006] The technical scheme of the present application is as follows:

[0007] The utility model provides a kind of electric pole hoisting fixture, including left clamp body, right clamp body and unlocking hook, left clamp body and right clamp body are rectangular frame structure, the middle part of left, right clamp body is hinged by twist shaft, the upper end of left, right clamp body is equipped with hanging nose respectively, two hanging noses are connected by lifting rope, the middle part of lifting rope is equipped with rope sleeve, the lower end of left, right clamp body is equipped with columnar clamping plate respectively, the lower side of twist shaft is equipped with guide plate shaft parallel to twist shaft by suspension bracket, the two sides of guide plate shaft are equipped with left guide plate and right guide plate respectively, guide plate shaft is hinged with the side of left guide plate and right guide plate respectively, the maximum angle of limiting left guide plate and right guide plate with the plane where twist shaft and guide plate shaft are located is alpha on guide plate shaft, 60 ° < alpha < 90 °, the side of left guide plate and right guide plate away from twist shaft is equipped with magnet respectively, the unlocking hook includes hook and two hook arms, two hook arms are symmetrically arranged about hook, the side of hook arm away from hook is equipped with slide plate perpendicular to the plane where hook and hook arm are located, the upper end of hook is connected with lifting rope by directional chain, the directional chain is sequentially buckled by multiple annular links, the link includes link upper arm and link lower arm, the side of link upper arm close to link lower arm is equipped with V-shaped arch, the middle part of link lower arm is equipped with V-shaped groove matched with V-shaped arch of link upper arm, the link of directional chain upper end is connected with lifting rope by connecting piece, the upper end of connecting piece is equipped with two mutually V-shaped lifting rope holes, the lifting rope of the two sides of rope sleeve is respectively inserted into two lifting rope holes, the lower end of connecting piece is fixedly connected with the link of directional chain upper end.

[0008] The electric pole hoisting fixture of the utility model is used for hoisting cement pole with crane or crane, and the rope sleeve of the electric pole hoisting fixture is sleeved on the lifting hook of the crane or crane.In use, first, the unlocking hook is hooked on the twist shaft, under the action of gravity of the upper side part of left and right clamp bodies on the twist shaft, the upper end of left and right clamp bodies is opened, and then the clamping plate of the lower end of left and right clamp bodies is in the open state, the electric pole hoisting fixture goes down, and the clamping plate is parallel to the two sides of the gravity center of the electric pole, the length of the lifting rope limits the opening angle of the upper end of left and right clamp bodies, so that the clamping plate of the lower end of left and right clamp bodies is opened slightly larger than the diameter of the electric pole.The lifting hook is lifted under the action of the crane or crane, the ground operator disconnects the unlocking hook from the twist shaft, the lifting hook pulls the rope sleeve and drives the lifting rope, under the action of the lifting rope, the upper end of left and right clamp bodies is close to each other, the clamping plate of the lower end of left and right clamp bodies is close to each other, and the electric pole is clamped.The electric pole reaches the upper side of the destination point, the crane or crane lowers the electric pole, the electric pole hoisting fixture touches the ground, with the lifting force between the upper end of left and right clamp bodies being removed, the upper end of left and right clamp bodies is opened, the clamping of the clamping plate of the lower end of left and right clamp bodies on the electric pole is removed, and the electric pole is released.

[0009] When the electric pole hoisting fixture needs to be separated from the electric pole that has touched the ground and be lifted for hoisting the next electric pole, the electric pole hoisting fixture will clamp the electric pole that has touched the ground again if the unlocking hook is not hooked on the winding shaft. During the hoisting process, no one is allowed to stand under the lifting arm, and the operation of hooking the unlocking hook on the winding shaft by the ground personnel needs the ground operator to reach the electric pole from the peripheral safety area, which increases the work of the ground operator, in addition, the falling process of the electric pole is different from the lifting process of the electric pole, before the electric pole is lifted, it is stably placed on the transport vehicle or the temporary storage site, and the whole electric pole is in a relatively stable state, the safety of the operation of the ground operator to separate the unlocking hook from the winding shaft is relatively high, but in the falling process of the electric pole, due to the complex ground conditions of the target site, there is a risk of rolling of the electric pole, and the safety of the ground operator cannot be guaranteed during the process of hooking the unlocking hook on the winding shaft.

[0010] The unlocking hook is automatically hooked on the winding shaft through the directional lock chain, the unlocking hook and the guide plate. During the falling process of the electric pole, the unlocking hook continuously falls, the left guide plate and the right guide plate form an obtuse angle with each other under the action of the limiting mechanism, so that the falling unlocking hook can always fall into the left guide plate or the right guide plate and be attracted by the magnet. The lifting hook rises, the rope sleeve drives the directional lock chain and the unlocking hook to rise, under the action of the directional lock chain tension and the magnetic force, the guide plate where the unlocking hook is located rotates, the included angle between the guide plate and the plane where the winding shaft and the guide plate shaft are located gradually decreases, so that the unlocking hook approaches the plane where the winding shaft and the guide plate shaft are located, and the unlocking hook is located below the winding shaft. The unlocking hook continues to move upward, the unlocking hook slides upward along the guide plate where it is located, until the hook arm of the unlocking hook away from the side of the guide plate hooks the winding shaft, and finally the function of automatically hooking the unlocking hook on the winding shaft is realized.

[0011] The unlocking hook is a double-hook arm structure, the two hook arms and the hook of the unlocking hook are located in the same plane, and the sliding plate on the hook arm of the unlocking hook is perpendicular to the plane where the unlocking hook is located. Only when the plane where the unlocking hook is located is perpendicular to the winding shaft, can the hook arm hook the winding shaft during the rising process of the unlocking hook. Therefore, when the unlocking hook falls, the unlocking hook needs to fall in a vertical posture to the winding shaft, so that the sliding plate can be attached to the left guide plate or the right guide plate, and then the relationship between the unlocking hook and the winding shaft is fixed.

[0012] The plane where the hoisting rope is located is in a fixed vertical relationship with the winding shaft after being pulled tight. The unlocking hook is connected with the hoisting rope through the positioning chain and the connecting piece. To ensure the vertical relationship between the unlocking hook and the winding shaft, the angle between the plane where the hoisting rope is located and the plane where the unlocking hook is located needs to be fixed. The conventional chain will rotate in a certain circumferential direction when being pulled tight, and thus cannot keep the angle of the conventional chain itself fixed. The chain link structure of the positioning chain enables the V-shaped arch of the lower link and the V-shaped groove of the upper link of the adjacent two links to be embedded when being pulled tight, so that the two adjacent links keep a vertical state and the angle of the entire positioning chain is fixed. The connecting piece ensures the angle between the upper link of the positioning chain and the plane where the hoisting rope is located after being pulled tight. The upper end of the connecting piece is provided with two V-shaped hoisting rope holes, the hoisting rope holes at the two ends of the rope sleeve are respectively inserted into the two hoisting rope holes, and the lower end of the connecting piece is fixedly connected with the upper link of the positioning chain.

[0013] The rectangular frame structure of the left and right clamping bodies comprises two mutually parallel clamping body side arms, the upper ends of the two clamping body side arms are connected through an upper connecting plate, the lower ends of the two clamping body side arms are connected through a clamping plate, the winding shaft penetrates the middle part of the clamping body side arms, and the lifting nose is arranged at the middle part of the upper connecting plate.

[0014] Specifically, the sum of the interval between the two clamping body side arms of the left clamping body and the thickness of the two clamping body side arms is equal to the interval between the two clamping body side arms of the right clamping body, and the left clamping body is located inside the right clamping body, so that the left clamping body and the right clamping body can rotate around the winding shaft.

[0015] The lower end of the clamping body side arm is an arc shape matched with the cylindrical clamping plate.

[0016] The clamping plate increases the contact area of the clamping body side arm and the electric pole, preventing the electric pole from sliding axially. The arc-shaped lower end of the clamping body side arm can improve the stability of the connection between the clamping body side arm and the clamping plate, and also plays a role of reinforcing ribs on the outside of the clamping plate, reducing the strength requirement of the clamping plate.

[0017] The two ends of the guide plate shaft are respectively provided with suspensions, the upper end of each suspension is provided with a fixed hoop fixedly connected with the winding shaft, and the ratio of the outer diameter of the fixed hoop to the diameter of the winding shaft is 2:1-3:1.

[0018] When the unlocking hook hooks the winding shaft and rises, the unlocking hook has a certain probability of sliding axially along the winding shaft, which is not convenient for aligning with the electric pole to be hoisted. In addition to connecting the winding shaft and the guide plate shaft, the fixed hoop of the suspension also forms a limiting interval on the winding shaft, so that the unlocking hook does not slide excessively and the horizontal level of the winding shaft is maintained as much as possible.

[0019] The limiting mechanism is a limiting block fixedly connected with the guide plate shaft.

[0020] Further, the left guide plate and the right guide plate are provided with a tension spring between the limiting block. The tension spring keeps the left guide plate and the right guide plate in the maximum angle state without contacting the unlocking hook, so as to increase the area for receiving the unlocking hook.

[0021] The lower middle part of the clamping plate is provided with a notch, and the notch is a circular arc shape.

[0022] When the clamping plate is deformed after long-term use, the notch provided in the middle part of the clamping plate can prevent the deformed middle part of the clamping plate from forming a fulcrum for contacting the pole, thereby avoiding the situation that the middle part of the clamping plate and one end of the clamping plate clamp the pole, so as to improve the stability of the clamping plate in clamping the pole. Secondly, in some working conditions, the poles to be hoisted are stacked, and the process of inserting the clamping plate needs to manually pry a gap between adjacent poles and then insert the clamping plate. When the clamping plate is deformed, especially the middle part of the clamping plate is deformed, it is not convenient for the clamping plate to be inserted into the gap. The notch provided in the middle part of the clamping plate can reduce the above situation. Finally, the notch can also reduce the material of the clamping plate and save costs.

[0023] The present application has the advantages and positive effects that: through the above technical scheme, in the case of limited conditions such as field, the crane or hoist can be used to conveniently hoist the pole, which has the advantages of simple operation, labor saving and high safety. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural principle schematic diagram of the present application

[0025] Figure 2 is a structural schematic diagram of the directional chain link

[0026] Figure 3 is a front view of the chain link

[0027] Figure 4 is Figure 3 is a sectional view at A-A

[0028] Figure 5 is a structural schematic diagram of the suspension

[0029] Figure 6 is a structural schematic diagram of the unlocking hook

[0030] In the figure:

[0031] 3, unlocking hook 4, hinge shaft 5, directional chain

[0032] 6, connecting piece 11, left clamping body 12, right clamping body

[0033] 13, hanging nose 14, hanging rope 15, rope sleeve

[0034] 16. Clamping plate; 17. Upper connecting plate; 31. Hook handle

[0035] 32. Hook arm; 33. Slide plate; 41. Suspension.

[0036] 42. Guide plate shaft; 43. Left guide plate; 44. Right guide plate

[0037] 45. Magnet; 46. Limiting block; 51. Chain link

[0038] 161, Notch 411, Fixing Hoop 511, Chain Link Upper Arm

[0039] 512, lower arm of link Detailed Implementation

[0040] like Figures 1-6 As shown, the present invention:

[0041] A pole hoisting clamp includes a left clamp 11, a right clamp 12, and an unlocking hook 3. The left clamp 11 and right clamp 12 are rectangular frame structures. The middle parts of the left and right clamps are hinged by a pivot 4. The upper ends of the left and right clamps are respectively provided with lifting lugs 13, and the two lifting lugs 13 are connected by a hoisting rope 14. The middle part of the hoisting rope 14 is provided with a rope loop 15. The lower ends of the left and right clamps are respectively provided with cylindrical clamping plates 16. The lower side of the pivot 4 is provided with a guide plate shaft 42 parallel to the pivot 4 via a suspension 41. The two sides of the guide plate shaft are respectively provided with a left guide plate 43 and a right guide plate 44. The guide plate shaft is hinged to the sides of the left guide plate and the right guide plate, respectively. The guide plate shaft 42 is provided with a limiting mechanism that limits the maximum angle α between the left guide plate and the right guide plate and the plane where the pivot 4 and the guide plate shaft are located to 80°. The left guide plate and the right guide plate are further away from the pivot 4. Magnets 45 are provided on each side. The unlocking hook 3 includes a hook arm 31 and two hook arms 32. The two hook arms 32 are symmetrically arranged about the hook arm 31. A sliding plate 33 perpendicular to the plane of the hook arm and hook arms is provided on the side of the hook arm 32 away from the hook arm 31. The upper end of the hook arm 31 is connected to the suspension rope 14 through a directional chain 5. The directional chain 5 is formed by multiple ring-shaped links 51 being snapped together in sequence. The link includes an upper link arm 511 and a lower link arm 512. A V-shaped arch is provided on the side of the upper link arm near the lower link arm. A V-shaped groove is provided in the middle of the lower link arm to match the V-shaped arch of the upper link arm. The link at the upper end of the directional chain 5 is connected to the suspension rope through a connector 6. The upper end of the connector has two suspension rope holes that form a V-shape. The suspension ropes on both sides of the rope loop are respectively inserted into the two suspension rope holes. The lower end of the connector 6 is fixedly connected to the link at the upper end of the directional chain 5.

[0042] The rectangular frame structure of the left and right clamping bodies 11 and 12 comprises two mutually parallel clamping body side arms, the upper ends of the two clamping body side arms are connected by an upper connecting plate 17, the lower ends of the two clamping body side arms are connected by a clamping plate 16, the winding shaft 4 penetrates the middle part of the clamping body side arms, and the hanging nose 13 is arranged in the middle part of the upper connecting plate 17.

[0043] The lower end of the clamping body side arm is arc-shaped and matched with the cylindrical clamping plate.

[0044] The two ends of the guide plate shaft are respectively provided with a suspension 41, the upper end of the suspension is provided with a fixed hoop 411 connected with the winding shaft, and the ratio of the outer diameter of the fixed hoop to the diameter of the winding shaft 4 is 2:1.

[0045] The limiting mechanism is a limiting block 46 fixedly connected with the guide plate shaft.

[0046] A tension spring is arranged between the left and right guide plates and the limiting block 46.

[0047] The lower middle part of the clamping plate is provided with a notch 161.

[0048] The working process of the present example is as follows:

[0049] In use, the unlocking hook 3 is hooked on the winding shaft 4, the hook of the crane is hooked on the rope sleeve 15, the crane hoists the empty pole hoisting fixture to above the pole to be hoisted, the crane lowers the pole hoisting fixture, and the ground operator coordinates the clamping plate 16 to the two sides of the pole, the middle part of the clamping plate 16 corresponds to the center of gravity of the pole. The hook of the crane rises, the ground operator separates the unlocking hook 3 from the winding shaft 4, the pole hoisting fixture clamps the pole, and the pole is hoisted to the target position under the action of the crane.

[0050] The hook falls, the pole falls to completely touch the ground, the hook further falls, the distance between the unlocking hook and the left guide plate decreases, the sliding plate 33 of one hook arm of the unlocking hook 3 falls into the left guide plate 43 and is attracted by the magnet on the left guide plate. The hook rises, the unlocking hook 3 rises, under the action of the pulling force of the directional lock chain 5 and the attracting force of the magnet 45, the left guide plate rotates around the guide plate shaft 42, so that the hook arm of the unlocking hook 3 away from the left guide plate is located below the winding shaft, the unlocking hook continues to rise and hooks the winding shaft 4.

[0051] The above describes one embodiment of the present application in detail, but the content described is only a preferred embodiment of the present application and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. A pole hoisting clamp, characterized in that: The device includes a left clamp, a right clamp, and an unlocking hook. The left and right clamps are rectangular frame structures, hinged together at the middle by a pivot. Each clamp has a lifting lug at its upper end, connected by a lifting rope with a loop in the middle. Each clamp has a cylindrical clamp plate at its lower end, with a notch in the lower center. A guide plate shaft parallel to the pivot is suspended below the pivot. A left guide plate and a right guide plate are located on either side of the guide plate shaft, hinged to the sides of the left and right guide plates respectively. The guide plate shaft has features that restrict the movement of the left and right guide plates relative to the pivot. A limiting mechanism with a maximum included angle α between the guide plate shaft and the plane containing the guide plate shaft, where 60° < α < 90°, is a limiting block fixedly connected to the guide plate shaft. Magnets are respectively provided on the side of the left and right guide plates away from the hinge shaft. The unlocking hook includes a hook arm and two hook arms symmetrically arranged about the hook arm. A sliding plate perpendicular to the plane containing the hook arm and hook arm is provided on the side of the hook arm away from the hook arm. The upper end of the hook arm is connected to the lifting rope via a directional chain. The directional chain is formed by multiple ring-shaped links interlocking sequentially. Each link includes an upper link arm and a lower link arm. A V-shaped part is provided on the side of the upper link arm near the lower link arm. The lower arm of the chain has a V-shaped groove in the middle that matches the V-shaped arch of the upper arm of the chain. The chain at the upper end of the directional chain is connected to the sling through a connector. The upper end of the connector has two sling holes that form a V-shape. The slings on both sides of the rope loop are inserted into the two sling holes respectively. The lower end of the connector is fixedly connected to the chain at the upper end of the directional chain.

2. The pole hoisting clamp according to claim 1, characterized in that: The rectangular frame structure of the left and right clamps includes two parallel clamping side arms. The upper ends of the two clamping side arms are connected by an upper connecting plate, and the lower ends of the two clamping side arms are connected by a clamping plate. The hinge shaft passes through the middle of the clamping side arms, and the lifting nose is located in the middle of the upper connecting plate.

3. The pole hoisting clamp according to claim 2, characterized in that: The lower end of the side arm of the clamp is an arc shape that matches the cylindrical clamp plate.

4. The pole hoisting clamp according to claim 1, characterized in that: The guide plate shaft is provided with suspension at both ends, and the upper end of the suspension is provided with a fixing hoop that is fixedly connected to the hinge shaft. The ratio of the outer diameter of the fixing hoop to the diameter of the hinge shaft is 2:1-3:

1.

5. The pole hoisting clamp according to claim 1, characterized in that: A tension spring is provided between the left guide plate and the right guide plate and the limiting block.

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