Lifting appliance for vertically lifting crankshaft

Abstract

The utility model provides a lifting appliance for vertically lifting a crankshaft, belongs to the technical field of crankshaft lifting appliances, and solves the problem that the existing lifting appliance only can horizontally lift the crankshaft, so that the crankshaft is troublesome to vertically place. The device comprises a U-shaped clamping frame, at least two first positioning columns used for preventing a crankshaft from moving out of the U-shaped clamping frame are arranged on the upper surface of the U-shaped clamping frame, the U-shaped clamping frame is connected with a vertical rod, and the vertical rod is connected with a transverse connecting rod. The crankshaft can be clamped into the U-shaped clamping frame and limited by the disc at the end of the crankshaft, so that downward movement of the crankshaft is limited, then the disc at the end of the crankshaft is blocked through the first positioning column on the U-shaped clamping frame, the crankshaft is prevented from laterally sliding out of the U-shaped clamping frame, and therefore vertical hoisting of the crankshaft is achieved, and vertical placement is facilitated; the transverse connecting rod and the U-shaped clamping frame are arranged at intervals up and down under the connection of the vertical rod, so that a tailstock tip on the vertical gear shaper can conveniently move to the position below the transverse connecting rod to abut against and position the upper end face of the crankshaft.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankshaft lifting tools, and particularly belongs to a lifting tool for vertically lifting a crankshaft. Background Technique

[0002] The crankshaft is the main rotating component in an engine. It converts the reciprocating linear motion of the piston into circular rotational motion to provide power for the entire mechanical system. Since the crankshaft is relatively heavy, a lifting tool needs to be configured to assist in handling the crankshaft during the production process to reduce the working intensity of workers.

[0003] The existing lifting tool uses two hooks to respectively hook on both ends of the crankshaft to horizontally lift the crankshaft. When using this lifting method to place the crankshaft on a vertical gear shaper, since the vertical gear shaper requires the crankshaft to be vertically placed, workers still need to turn the orientation of the crankshaft end, which is rather troublesome in operation and there is a safety risk of the crankshaft falling. Therefore, the existing lifting tool cannot meet the requirement of vertically lifting the crankshaft. Content of the Utility Model

[0004] In view of the above problems, the purpose of the utility model is to provide a lifting tool for vertically lifting a crankshaft. A U-shaped bracket is provided to be able to be inserted into the crankshaft and limited by the disc at the end of the crankshaft, thereby restricting the downward movement of the crankshaft. Then, the first positioning post on the U-shaped bracket blocks the disc at the end of the crankshaft to prevent the crankshaft from sliding out laterally from the U-shaped bracket, thus realizing the vertical lifting of the crankshaft and facilitating the vertical placement.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A lifting tool for vertically lifting a crankshaft, including a U-shaped bracket. At least two first positioning posts for preventing the crankshaft from moving out of the U-shaped bracket are arranged on the upper surface of the U-shaped bracket. The U-shaped bracket is connected with a vertical rod, and a transverse connecting rod extending directly above the U-shaped bracket is connected to the vertical rod.

[0007] Preferably, a second positioning post is arranged on the upper surface of the U-shaped bracket and the second positioning post is located at one end of the U-shaped bracket close to the vertical rod.

[0008] Preferably, the parts of the first positioning post and the second positioning post in contact with the crankshaft are provided with guiding inclined surfaces.

[0009] Preferably, a screw rod is vertically and threadedly connected to the upper surface of the U-shaped bracket, and a limiting pressure plate is movably sleeved on the screw rod.

[0010] Preferably, a spring is sleeved on the screw rod and located above the limiting pressure plate.

[0011] Preferably, a support plate contacting the bottom of the U-shaped bracket is provided at the lower end of the vertical rod, and a first fixing screw threadedly connected to the U-shaped bracket penetrates through the bottom of the support plate movably.

[0012] Preferably, two clamping arms for clamping the vertical rod are provided at one end of the U-shaped bracket close to the vertical rod, and a second fixing screw is arranged on the clamping arm. The second fixing screw penetrates through the clamping arm and the vertical rod movably and is threadedly connected with a nut.

[0013] Preferably, a lifting ring is arranged on the transverse connecting rod directly above the U-shaped bracket.

[0014] Preferably, a reinforcing rib is arranged at the intersection of the vertical rod and the transverse connecting rod.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0016] The U-shaped bracket can be inserted into the crankshaft and limited by the disc at the end of the crankshaft, so as to limit the downward movement of the crankshaft. Then, the disc at the end of the crankshaft is blocked by the first positioning post on the U-shaped bracket to prevent the crankshaft from sliding out laterally from the U-shaped bracket, thereby realizing the vertical lifting of the crankshaft and facilitating the vertical placement; the transverse connecting rod is arranged at an upper and lower interval with the U-shaped bracket under the connection of the vertical rod, so that the tailstock center on the vertical gear shaper can move below the transverse connecting rod to abut and position the upper end surface of the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the main view partial sectional structure provided by the embodiment of the present utility model;

[0019] Figure 2 It is a schematic diagram of the top view partial sectional structure provided by the embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the main view structure of hoisting the crankshaft provided by the embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the top view structure of hoisting the crankshaft provided by the embodiment of the present utility model.

[0022] Description of the Drawings: 1 - U-shaped bracket; 2 - first positioning post; 3 - guiding inclined plane; 4 - spring; 5 - screw rod; 6 - limiting pressure plate; 7 - first fixing screw; 8 - support plate; 9 - vertical rod; 10 - reinforcing rib; 11 - horizontal connecting rod; 12 - lifting ring; 13 - second positioning post; 14 - second fixing screw; 15 - clamping arm; 16 - crankshaft. Detailed Description of the Invention

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does 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 should not be construed as a limitation to the present invention.

[0026] The following will be combined with Figures 1-4 to describe the present invention in detail.

[0027] Embodiment

[0028] A lifting device for vertically lifting a crankshaft includes a U-shaped bracket 1. At least two first positioning posts 2 for preventing the crankshaft 16 from moving out of the U-shaped bracket 1 are provided on the upper surface of the U-shaped bracket 1. The U-shaped bracket 1 is connected with a vertical rod 9, and a horizontal connecting rod 11 extending directly above the U-shaped bracket 1 is connected to the vertical rod 9. The lifting rope or chain for lifting is connected to the horizontal connecting rod 11, and the lifting rope or chain is located directly above the U-shaped bracket 1 to ensure that the crankshaft 16 remains in a vertical state during the lifting process.

[0029] The U-shaped holder 1 is used to clip into the crankshaft 16 and is limited by the disc at the end of the crankshaft 16, thereby restricting the downward movement of the crankshaft. Then, the first positioning post 2 on the U-shaped holder 1 blocks the disc at the end of the crankshaft 16 to prevent the crankshaft 16 from sliding out laterally from the U-shaped holder 1, thus realizing the vertical lifting of the crankshaft 16 and facilitating the vertical placement. The transverse connecting rod 11 is arranged at an upper and lower interval with the U-shaped holder 1 under the connection of the vertical rod 9, thereby facilitating the tailstock center on the vertical gear shaper to move below the transverse connecting rod 11 to abut and position the upper end surface of the crankshaft 16.

[0030] The upper surface of the U-shaped holder 1 is provided with a second positioning post 13 and the second positioning post 13 is located at one end of the U-shaped holder 1 close to the vertical rod 9. The second positioning post 13 cooperates with the two first positioning posts 2 to limit the disc at the end of the crankshaft 16, preventing the crankshaft 16 from sliding during the lifting process and increasing the stability of the lifting.

[0031] The parts of the first positioning post 2 and the second positioning post 13 in contact with the crankshaft 16 are provided with guiding inclined surfaces 3. During the process of placing the crankshaft 16 onto the U-shaped holder 1, the guiding inclined surfaces 3 facilitate the disc at the end of the crankshaft 16 to be placed more quickly inside the first positioning post 2 and the second positioning post 13 for positioning.

[0032] A screw rod 5 is vertically threadedly connected to the upper surface of the U-shaped holder 1, and a limit pressing plate 6 is movably sleeved on the screw rod 5. The threaded connection mode of the screw rod 5 and the U-shaped holder 1 facilitates the installation of the limit pressing plate 6. The limit pressing plate 6 rotates to a place far from the U-shaped opening of the U-shaped holder 1 before the crankshaft 16 is clipped into the U-shaped holder 1. After the crankshaft 16 is clipped into the U-shaped holder 1, the limit pressing plate 6 is adjusted to be placed on the upper end surface of the crankshaft 16 to prevent the crankshaft 16 from moving upward and slipping out of the U-shaped holder 1 due to misoperation. When the crankshaft 16 needs to be removed, the limit pressing plate 6 is rotated away.

[0033] A spring 4 is sleeved on the screw rod 5 above the limit pressing plate 6. The spring 4 keeps the limit pressing plate 6 in abutment with the upper end surface of the crankshaft 16, avoiding the free rotation of the limit pressing plate 6 during the lifting process and losing the restriction on the upward displacement of the crankshaft 16.

[0034] The lower end of the vertical rod 9 is provided with a support plate 8 in contact with the bottom of the U-shaped holder 1, and the bottom of the support plate 8 is movably penetrated by a first fixing screw rod 7 threadedly connected to the U-shaped holder 1. The support plate 8 supports the U-shaped holder 1 and is fixed by the first fixing screw rod 7.

[0035] One end of the U-shaped bracket 1 close to the vertical rod 9 is provided with two clamping arms 15 for clamping the vertical rod 9. A second fixing screw 14 is arranged on the clamping arm 15. The second fixing screw 14 movably penetrates through the clamping arm 15 and the vertical rod 9 and is threadedly connected with a nut. Under the fixing action of the first fixing screw 7, to prevent the U-shaped bracket 1 from rotating around the first fixing screw 7, the clamping arm 15 is arranged to be clamped on both sides of the vertical rod 9, and then the second fixing screw 14 is arranged to fix the U-shaped bracket 1 and the vertical rod 9, further increasing the connection stability of the U-shaped bracket 1.

[0036] A suspension ring 12 located directly above the U-shaped bracket 1 is arranged on the transverse connecting rod 11. The suspension ring 12 can facilitate the fixing of a suspension rope or a suspension chain.

[0037] A reinforcing rib 10 is arranged at the intersection of the vertical rod 9 and the transverse connecting rod 11. The reinforcing rib 10 increases the connection strength between the vertical rod 9 and the transverse connecting rod 11 and avoids breakage at the connection between the vertical rod 9 and the transverse connecting rod 11.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lifting device for vertically lifting a crankshaft, comprising a U-shaped bracket (1), characterized in that: The upper surface of the U-shaped bracket (1) is provided with at least two first positioning columns (2) for preventing the crankshaft (16) from moving out of the U-shaped bracket (1); the U-shaped bracket (1) is connected to a vertical rod (9); and the vertical rod (9) is connected to a transverse connecting rod (11) extending to the top of the U-shaped bracket (1).

2. A lifting device for vertically lifting a crankshaft according to claim 1, characterized in that: A second positioning column (13) is provided on the upper surface of the U-shaped bracket (1), and the second positioning column (13) is located at one end of the U-shaped bracket (1) close to the vertical rod (9).

3. A lifting device for vertically lifting a crankshaft according to claim 2, characterized in that: The portions of the first positioning column (2) and the second positioning column (13) that are in contact with the crankshaft (16) are provided with guiding inclined surfaces (3).

4. A lifting device for vertically lifting a crankshaft according to claim 1, characterized in that: The upper surface of the U-shaped bracket (1) is vertically threadedly connected with a screw rod (5), and a limit pressing plate (6) is movably sleeved on the screw rod (5).

5. A lifting device for vertically lifting a crankshaft according to claim 4, characterized in that: The screw rod (5) is sleeved with a spring (4) located above the limiting pressure plate (6).

6. A lifting device for vertically lifting a crankshaft according to claim 1, characterized in that: The lower end of the vertical rod (9) is provided with a support plate (8) in contact with the bottom of the U-shaped bracket (1), and the bottom of the support plate (8) is movably penetrated by a first fixing screw (7) threadedly connected to the U-shaped bracket (1).

7. A lifting device for vertically lifting a crankshaft according to claim 6, characterized in that: The U-shaped bracket (1) is provided with two clamping arms (15) at one end close to the vertical rod (9) for clamping the vertical rod (9), and the clamping arms (15) are provided with second fixing screws (14), which movably penetrate the clamping arms (15) and the vertical rod (9) and are threadedly connected with nuts.

8. The lifting device for vertically lifting a crankshaft according to claim 1, characterized in that: The transverse connecting rod (11) is provided with a lifting ring (12) located directly above the U-shaped bracket (1).

9. A lifting device for vertically lifting a crankshaft according to claim 1, characterized in that: A reinforcing rib (10) is provided at the intersection of the vertical rod (9) and the transverse connecting rod (11).

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