Lifting appliance and lifting device

Abstract

The utility model discloses a lifting appliance and a lifting device, the lifting appliance comprises a lifting unit and a lifting hook unit, the lifting unit is used for being connected with a movable end of the lifting device, the lifting hook unit is hinged with the lifting unit, and a locking unit is arranged on the lifting hook unit; the lifting hook unit is used for stretching into a wheel disk hole of a gear, and the locking unit is inserted into the wheel disk hole and used for limiting and locking the lifting hook unit stretching into the wheel disk hole. According to the lifting appliance disclosed by the utility model, the lifting hook unit extends into the wheel disk hole of the gear, then the locking unit is inserted into the wheel disk hole, and the lifting hook unit in the wheel disk hole is limited and locked through the locking unit, so that the lifting hook is prevented from being unhooked from the wheel disk hole, and the purpose of lifting after locking is realized. According to the gear lifting device, the lifting hook is used for hooking the radial plate hole of the gear for lifting instead of clamping the edge of the gear, so that the gear teeth of the gear are not easily damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of railway locomotives, in particular to a sling and a hoisting device using the sling. Background Art

[0002] During the production and processing of railway locomotive driven gears, hoists are often needed for loading and unloading machine tools, transportation, etc. Due to the heavy weight of the product, if the hoist is not well designed, there will be safety hazards during the hoisting process. The hoists used in the past include: wire ropes, cloth belts, etc. However, since the locomotive driven gear weighs hundreds of kilograms, as the use time increases, the fine steel wires in the wire rope will break one by one at the local stress-bearing parts. When it reaches a certain level, the entire wire rope is at risk of sudden one-time breakage; although the cloth belt is easy to use, it is easy to be cut when it comes into contact with sharp angles.

[0003] Chinese patent 201120168334.1 discloses a universal hoist for locomotive wheels, which includes a lifting ring, a steel wire rope and a hook. There are three steel wire ropes, one end of each steel wire rope is connected to the lifting ring, and the other end is connected to the hook. The steel wire rope is connected to the hook through a hanging plate. The hanging plate is rotatably connected to the hook through a pin. The rotational coordination between the hook and the hanging plate is designed to adapt to the change in wheel height, which has universality and reduces safety hazards. However, when this hoist is in use, the hook is clamped on the lower part of the wheel, and the hanging plate is clamped on the upper part of the wheel. This method is easy to cause damage to the wheel, especially when used for lifting gears, it is easy to damage the gear teeth.

[0004] In view of the defects of existing lifting devices, it is urgent to design a safe and reliable lifting device for railway locomotive driven gears. Utility Model Content

[0005] The utility model provides a lifting device to solve the technical problem that the existing lifting device is easy to damage the wheel teeth by clamping the edge of the wheel for lifting through the lifting hook.

[0006] According to one aspect of the utility model, there is provided a lifting device for lifting gears of a railway locomotive, the lifting device comprising:

[0007] A lifting unit connected to the movable end of the lifting device, and a hook unit hinged to the lifting unit, wherein the hook unit is provided with a locking unit;

[0008] The hook unit is used to extend into the spoke hole of the gear, and the locking unit is inserted into the spoke hole to limit and lock the hook unit extending into the spoke hole.

[0009] Furthermore, the hook unit includes a suspension rod and a hook, wherein the hook is connected to the bottom of the suspension rod and is arranged toward one side of the suspension rod.

[0010] Furthermore, the hook is provided with a copper protective layer for contacting the edge of the spoke plate hole.

[0011] Furthermore, two hook units are provided, and the two hook units are respectively arranged at the two ends of the lifting unit, and the two hook units are used to connect to two spoke plate holes preset on the gear spoke plate in a one-to-one correspondence.

[0012] Further, the locking unit comprises a locking pin sleeve and a locking pin, the locking pin is inserted into the locking pin sleeve in a liftable manner, the locking pin sleeve is fixed to the suspension rod, the locking pin is provided with a limiting portion and a locking portion, the limiting portion is laterally connected to the upper portion of the locking portion, and the locking portion is inserted into the locking pin sleeve;

[0013] The locking portion is used to be lowered and inserted into the spoke hole of the gear to lock the hook, and the limiting portion is used to be hooked on the locking pin sleeve to prevent the locking pin from falling off relative to the locking pin sleeve.

[0014] Furthermore, the sum of the diameter of the hook and the diameter of the locking pin is 2-3 mm smaller than the diameter of the spoke plate hole.

[0015] Furthermore, the locking unit also includes a hanging rod, which is arranged on the hanging rod and located above the locking pin sleeve. The limiting portion is also used to be hung on the hanging rod and keep the locking portion away from the hook.

[0016] Furthermore, the lifting unit includes a lifting ring and a crossbeam, and the lifting ring is rotatably connected to the upper middle part of the crossbeam.

[0017] Furthermore, two hook units are provided, and the two hook units are installed at both ends of the beam in a one-to-one correspondence and are hinged relative to the beam through a pin shaft.

[0018] Another aspect of the utility model provides a lifting device, including a lifting arm, wherein the lifting device also includes the lifting tool, and the lifting tool is installed on the lifting arm.

[0019] The utility model has the following beneficial effects:

[0020] The utility model hoisting device extends the hook unit into the spoke hole of the gear, and then inserts the locking unit into the spoke hole, and the locking unit limits and locks the hook unit in the spoke hole to prevent the hook from being unhooked from the spoke hole, so as to achieve the purpose of lifting after locking. The application performs lifting by hooking the hook to the spoke hole of the gear instead of clamping the hook to the edge of the gear, so it is not easy to damage the gear teeth.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a front structural schematic diagram of a preferred embodiment of the utility model;

[0024] Figure 2 It is a side structural schematic diagram of a preferred embodiment of the utility model.

[0025] Legend:

[0026] 1. Lifting unit; 11. Lifting ring; 12. Crossbeam; 2. Hook unit; 21. Lifting rod; 22. Hook; 3. Locking unit; 31. Locking pin sleeve; 32. Locking pin; 33. Hanging rod; 4. Gear; 5. Snap ring; 6. Pin shaft. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0028] Example 1

[0029] like Figure 1 As shown, a hoist of this embodiment is used for hoisting railway locomotive gears, comprising: a hoisting unit 1 used to be connected to the movable end of the hoisting device, and a hook unit 2 hinged to the hoisting unit 1, and a locking unit 3 is provided on the hook unit 2; by extending the hook unit 2 into the spoke plate hole of the gear 4, and at the same time inserting the locking unit 3 into the spoke plate hole and limiting the hook unit 2 inserted into the spoke plate hole, the hoist and the gear 4 are transported by the transport device.

[0030] The driven gear 4 of railway locomotives is generally designed with two or four process holes on the spoke plate for locomotive maintenance. The quality requirements of the gear spoke plate are lower than those of the gear teeth. The casting billet is already cast when delivered, and the forging billet is drilled after rough turning during machining. The hole sizes are Φ55 / Φ60 / Φ80 and other specifications, and the hole tolerance is about ±2mm. For each specific hole diameter and distribution circle product, the corresponding size of the hanger is designed respectively.

[0031] The hook unit 2 and locking unit 3 described above are made of materials such as steel or iron, and have a strong structure and are not easy to break. When in use, the sling is moved downward, the hook unit 2 is inserted into the bottom of the spoke hole of the gear 4, and the locking unit 3 is inserted into the spoke hole. The hook unit 2 inserted into the spoke hole is locked by the locking unit 3 to prevent unhooking. After locking, the sling can be lifted, and then the sling and the gear 4 can be transported by the transporting device to carry out operations such as loading and unloading machine tools and transportation. Therefore, the sling of the present application is strong and reliable, and is not easy to break. By inserting the hook into the spoke hole for lifting, it is not easy to damage the gear teeth.

[0032] like Figure 1 As shown, in this embodiment, the hook unit 2 includes a suspension rod 21 and a hook 22, the hook 22 is connected to the bottom of the suspension rod 21, and the hook 22 is arranged toward one side of the suspension rod 21; the hook 22 is inserted into the bottom of the spoke hole so that the hook 22 is close to the edge of the spoke hole. The angle between the hook 22 and the suspension rod 21 is less than or equal to 90°. When in use, the hook 22 is inserted into the bottom of the spoke hole so that the hook 22 is close to the edge of the spoke hole to hook the spoke of the gear 4.

[0033] like Figure 1 As shown, in this embodiment, a copper protective layer for contacting the edge of the spoke hole is provided on the hook 22. The copper protective layer has a thickness of 2-5 mm. The copper material is relatively soft and can prevent the hook 22 from scratching the surface of the gear 4, thereby ensuring the integrity of the gear 4 during the lifting process.

[0034] like Figure 1 As shown, in this embodiment, the hook unit 2 is connected to the two ends of the lifting unit 1 on the left and right sides, and is used to connect to the two symmetrical spoke holes on the spoke of the gear 4. The hooks 22 of the two hook units 2 are respectively extended under the two symmetrically arranged spoke holes, so that the hooks 22 are close to the edges of the spoke holes, and the hook units 2 extended into the spoke holes are locked by the locking unit 3, and then the sling and the gear 4 are transported by the transport device.

[0035] like Figure 1As shown, in this embodiment, the locking unit 3 includes a locking pin sleeve 31 and a locking pin 32. The locking pin 32 is inserted into the locking pin sleeve 31. The locking pin sleeve 31 is fixed to the suspension rod 21. The locking pin 32 is provided with a limiting portion and a locking portion. The limiting portion is laterally connected to the upper portion of the locking portion, and the locking portion is inserted into the locking pin sleeve 31. The hook 22 is locked by inserting the locking portion into the spoke hole of the gear 4. The locking pin sleeve 31 is welded to the suspension rod 21 after edge cutting, so that the installed locking pin 32 is as close to the hook 22 as possible, so that the back-to-back gap between the locking pin 32 and the hook 22 is minimized, which can prevent decoupling, and ensure that the welding part of the locking pin sleeve 31 is not easily damaged and can move freely. The spacing between the locking pin sleeve 31 and the hook 22 is greater than the thickness of the spoke of the gear 4, and the welding direction of the locking pin sleeve 31 is opposite to the direction of the hook 22. The locking pin 32 can move freely up and down in the locking pin sleeve 31, and the limiting part of the locking pin 32 prevents the locking pin 32 from falling out of the locking pin sleeve 31 during the lifting of the gear 4. The hook 22 is locked by inserting the locking part into the spoke plate hole of the gear 4 to prevent it from being unhooked, so that the purpose of lifting can be achieved after locking.

[0036] like Figure 1 As shown, in this embodiment, the sum of the diameter of the hook 22 and the diameter of the locking pin 32 is smaller than the diameter of the spoke hole. Preferably, the sum of the diameter d1 of the hook 22 and the diameter d2 of the locking pin 32 is smaller than the diameter of the spoke hole by 2-3 mm. It is convenient to use and flexible to operate, and will not be unhooked, ensuring the safety of the gear 4 during the lifting process. If the sum of the diameter d1 of the hook 22 and the diameter d2 of the locking pin 32 is less than the diameter of the spoke hole by less than 2 mm, there is a problem that the hook and the locking pin are too tightly connected to the spoke hole and the operation is not flexible enough; if the sum of the diameter d1 of the hook 22 and the diameter d2 of the locking pin 32 is less than the diameter of the spoke hole by more than 3 mm, there is a risk of unhooking.

[0037] like Figure 1 and 2 As shown, in this embodiment, the locking unit 3 further includes a hanging rod 33, which is welded to the suspension rod 21 and is located above the lock pin sleeve 31. The hanging rod 33 is used to hang the lock pin 32. After the lifting work is completed, the sling is moved down a little (the sling is not subjected to force), the lock pin 32 is withdrawn from the spoke hole and hung on the hanging rod 33, and then the sling is withdrawn from the spoke hole and moved away.

[0038] like Figure 1 As shown, in this embodiment, the lifting unit 1 includes a lifting ring 11 and a cross beam 12, and the lifting ring 11 is installed above the middle of the cross beam 12 through a pin 6. The lifting ring 11 is connected to the movable end of the lifting device, and the lifting ring 11 is installed on the cross beam 12 through the pin 6 and can rotate relative to the cross beam 12, so that the direction of the lifting device can be adjusted at any time, and the operation is more flexible.

[0039] like Figure 2As shown, in this embodiment, the hook unit 2 is installed at both ends of the crossbeam 12 through a pin shaft 6 and is fastened through a clamp ring 5 to achieve a tight connection.

[0040] In a preferred embodiment, the hook unit is detachably connected to the crossbeam, so that hook units of different sizes can be replaced according to gears of different specifications.

[0041] In another preferred embodiment, the crossbeam is a telescopic rod structure, and its length is adjustable to adapt to gears of different diameters.

[0042] When in use, the lock pin 32 is hung on the hanging rod 33, and the lifting device is moved to align the hook 22 with the two symmetrically arranged spoke holes of the spur gear 4, and the lifting device is moved downward to allow the hook 22 to extend under the spoke, and the lifting device is manually rotated to make the hook 22 close to the edge of the spoke hole, and the lock pin 32 is rotated and inserted into the spoke hole, so that the hook 22 is bolted to prevent unhooking, and the purpose of lifting can be achieved after locking. After the lifting work is completed, the lifting device is moved downward a little (the lifting device is not subjected to force), the lock pin 32 is withdrawn from the spoke hole and hung on the hanging rod 33, and then the hook 22 is withdrawn from the spoke hole and moved away.

[0043] The above hoists have been used for many years. They are safe and reliable, easy and flexible to operate, and have not caused any damage to the products and no accidents have occurred.

[0044] Example 2

[0045] A lifting device comprises a lifting arm, wherein the lifting device further comprises the lifting device as described in Example 1, wherein the lifting device is installed on the lifting arm.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hoist used to lift the gears of railway locomotives. It is characterized in that The sling comprises: A lifting unit (1) for connecting to a movable end of a lifting device, and a hook unit (2) hinged to the lifting unit (1), wherein a locking unit (3) is provided on the hook unit (2); The hook unit (2) is used to extend into the web hole of the gear (4), and the locking unit (3) is used to insert into the web hole and limit and lock the hook unit (2) extending into the web hole.

2. The sling according to claim 1, It is characterized in that The hook unit (2) comprises a suspension rod (21) and a hook (22), wherein the hook (22) is connected to the bottom of the suspension rod (21), and the hook (22) is arranged toward one side of the suspension rod (21).

3. The sling according to claim 2, It is characterized in that The hook (22) is provided with a copper material protective layer for contacting the edge of the web hole.

4. The sling according to claim 2, It is characterized in that The hook units (2) are provided with two hook units (2), which are respectively arranged at the two ends of the lifting unit (1), and the two hook units (2) are used to connect to two spoke plate holes preset on the spoke plate of the gear (4) in a one-to-one correspondence.

5. The sling according to claim 2, It is characterized in that The locking unit (3) comprises a locking pin sleeve (31) and a locking pin (32), wherein the locking pin (32) is inserted into the locking pin sleeve (31) in a liftable manner, wherein the locking pin sleeve (31) is fixedly connected to the suspension rod (21), and the locking pin (32) is provided with a limiting portion and a locking portion, wherein the limiting portion is laterally connected to the upper portion of the locking portion, and the locking portion is inserted into the locking pin sleeve (31); The locking portion is used to be lowered and inserted into the spoke hole of the gear (4) to lock the hook (22), and the limiting portion is used to be hooked on the lock pin sleeve (31) to prevent the lock pin (32) from falling off relative to the lock pin sleeve (31).

6. The sling according to claim 5, It is characterized in that The sum of the diameter of the hook (22) and the diameter of the locking pin (32) is 2-3 mm smaller than the diameter of the web hole.

7. The sling according to claim 5, It is characterized in that The locking unit (3) further comprises a hanging rod (33), wherein the hanging rod (33) is arranged on the suspension rod (21) and is located above the locking pin sleeve (31), and the limiting portion is also used for being hung on the hanging rod (33) and making the locking portion away from the suspension hook (22).

8. The sling according to claim 4, It is characterized in that The lifting unit (1) comprises a lifting ring (11) and a crossbeam (12); the lifting ring (11) is rotatably connected to the upper middle portion of the crossbeam (12).

9. The sling according to claim 8, It is characterized in that The two hook units (2) are mounted one-to-one at the two ends of the crossbeam (12) and are hinged relative to the crossbeam (12) via a pin shaft (6).

10. A lifting device, comprising a lifting arm, It is characterized in that The lifting device further comprises a lifting device as claimed in any one of claims 1 to 9, wherein the lifting device is mounted on the lifting arm.

Images