Chain wheel hoisting tool

Abstract

The utility model relates to a chain wheel hoisting tool, and belongs to the technical field of chain wheel production. Comprising a lifting chain assembly and a vertical arm, an inclined upper inclined arm is arranged at the upper end of the vertical arm, the lifting chain assembly is installed at the upper end of the upper inclined arm, a lower cross arm is vertically fixed to the bottom end of the vertical arm, a chain wheel lifting clamping groove is formed in the lower cross arm, and a lifting anti-falling mechanism is installed on the vertical arm. The hoisting anti-falling mechanism has the following beneficial effects that by additionally arranging the hoisting anti-falling mechanism, the risk of accidental falling during hoisting, placing and turning over the chain wheel is eliminated to a great extent, the operation is simple, and the working efficiency is improved. According to the chain wheel hoisting tool disclosed by the utility model, an operator presses the end cap with fingers, so that the hoisting anti-falling mechanism can be quickly switched from an unlocking state to a locking state or switched from the locking state to the unlocking state. And the strip-shaped barrier strip is embedded into the strip-shaped caulking groove A again, the unlocking state can be recovered, and the hoisting anti-falling mechanism in the unlocking state does not interfere with transferring of the chain wheel.

Description

Technical Field

[0001] This utility model relates to a sprocket lifting fixture, belonging to the field of sprocket manufacturing technology. Background Technology

[0002] The sprocket is a key component connected to the motor and driving the tracks. A search revealed a utility model patent with patent number 202023026626.X, which discloses a lifting device for hoisting sprockets, relating to the field of lifting device technology. It includes a lifting frame with two lifting rods and a connecting rod connecting the two lifting rods. Each of the two lifting rods has a hook formed at the end opposite to the connecting rod. The hook abuts against the support rib of the sprocket. A lifting ring is formed on the connecting rod, and the lifting ring is hooked to the hook lock of the hoisting equipment. This application improves the efficiency of sprocket hoisting.

[0003] Currently, the sprocket precision machining process is as follows: lifting and flipping - clamping and machining surface A - lifting and moving - clamping and machining surface B - placement and flipping. However, the current technology is not comprehensive and has the following drawbacks: 1. The lifting device lacks an anti-detachment device. The sprocket needs to be flipped while being lifted, which may cause it to disengage and fall, potentially injuring someone's foot. 2. The lifting device lacks an anti-detachment device. After the sprocket is lifted and moved forward, its swaying may cause it to disengage and fall, potentially injuring someone's foot.

[0004] To solve one of the above problems, there is an urgent need for a sprocket lifting fixture. Utility Model Content

[0005] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to eliminate the risk of accidental detachment of the sprocket during hoisting, placement and flipping by adding a hoisting anti-detachment mechanism, and to make the operation simple and improve the work efficiency. Therefore, a sprocket hoisting fixture is provided.

[0006] The sprocket lifting fixture of this utility model includes a chain assembly and a vertical arm. The fixture is characterized in that: an inclined upper arm is provided at the upper end of the vertical arm, the chain assembly is installed at the upper end of the upper arm, a lower horizontal arm is vertically fixed at the bottom end of the vertical arm, a sprocket lifting slot is installed on the lower horizontal arm, and a lifting anti-detachment mechanism is installed on the vertical arm.

[0007] By adding a hoisting anti-detachment mechanism, the risk of accidental detachment during hoisting, placement, and rotation of the sprocket is greatly eliminated, and the operation is simple and the work efficiency is improved.

[0008] Preferably, the top end of the upper inclined arm is provided with a lifting hole for connecting the lifting chain assembly, and the other end of the lifting chain assembly has a lifting ring. The lifting hole is located above the sprocket lifting slot. This prevents the lifting position of the hook from not coinciding with the center of gravity of the sprocket, thus preventing tilting.

[0009] Preferably, the sprocket lifting slot is symmetrically welded with slot side plates A and B, and copper pads are welded to the bottom of the sprocket lifting slot and the inner walls of slot side plates A and B. This enhances the structural strength of the lifting position, prevents deformation of the sprocket lifting slot, secures the sprocket in the slot to prevent rotation of the sprocket relative to the slot cavity, and the copper pads prevent scratching the sprocket's inner hole and machined surface.

[0010] Preferably, the hoisting anti-detachment mechanism includes a strip-shaped stop capable of rotating from a horizontal state to a vertical state or from a vertical state to a horizontal state. One end of the strip-shaped stop is fixedly connected to a rotating shaft, and the other end of the rotating shaft passes through the vertical arm and is connected to an end cap. A compression spring is sleeved on the rotating shaft between the end cap and the vertical arm. The compression spring provides a thrust to move the end cap away from the vertical arm. A strip-shaped groove A matching the strip-shaped stop is provided along the length direction of the hoisting anti-detachment mechanism. One end of the strip-shaped groove A is provided with a groove B communicating with the strip-shaped groove A. The strip-shaped groove A and the groove B are perpendicular to each other. The strip-shaped stop is located in the strip-shaped groove A when vertical and in the groove B when horizontal.

[0011] In the unlocked state of the lifting anti-detachment mechanism, the strip-shaped stop bar is located within the strip-shaped groove A. When the sprocket lifting slot completes the lifting of the sprocket, a locking operation is required before transfer. The process of switching the lifting anti-detachment mechanism from the unlocked state to the locked state is as follows: the operator presses the end cap with their finger, causing the rotating shaft to push the strip-shaped stop bar away from the strip-shaped groove A. Then, the operator controls the strip-shaped stop bar to rotate from the vertical state to the horizontal state, releasing the pressure on the end cap. One end of the strip-shaped stop bar is embedded in the groove B. Because the compression spring provides a pushing force to move the end cap away from the vertical arm, the strip-shaped stop bar is not easily moved out of the groove B. After the strip-shaped stop bar switches to the horizontal state, it can restrict the sprocket within the sprocket lifting slot, minimizing the risk of the sprocket accidentally falling and eliminating safety hazards in sprocket lifting operations.

[0012] After the transfer is completed, the operator presses the end cap with their fingers, causing the rotating shaft to push the strip bar out of the groove B. Then, the operator controls the strip bar to rotate from a horizontal state to a vertical state, releasing the pressure on the end cap. The strip bar is then re-embedded into the strip groove A, restoring the unlocked state. In the unlocked state, the lifting anti-detachment mechanism does not interfere with the transfer of the sprocket.

[0013] Preferably, the upright arm has through holes A and B for the rotating shaft to pass through. The through holes A and B are coaxially arranged. The diameter of the through hole A is larger than the diameter of the rotating shaft, and the diameter of the through hole B is smaller than the diameter of the rotating shaft. A stepped platform is formed at the connection between the through hole A and the through hole B.

[0014] Preferably, the angle between the upper inclined arm and the vertical arm is set to forty-five degrees.

[0015] Preferably, the upper inclined arm, the vertical arm, and the lower horizontal arm are integrally formed.

[0016] Preferably, the lifting ring is a stainless steel shackle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The sprocket lifting fixture described in this utility model greatly eliminates the risk of accidental detachment during lifting, placement, and rotation of the sprocket by adding a lifting anti-detachment mechanism. It is also simple to operate and improves work efficiency.

[0019] The sprocket lifting fixture described in this utility model allows the operator to quickly switch the lifting anti-detachment mechanism from the unlocked state to the locked state or vice versa by pressing the end cap with their fingers.

[0020] The sprocket lifting fixture of this utility model allows the operator to press the end cap with their fingers, causing the rotating shaft to push the strip-shaped stop bar out of the groove B. Then, the operator controls the strip-shaped stop bar to rotate from a horizontal state to a vertical state, releasing the pressure on the end cap. The strip-shaped stop bar is then re-embedded into the strip-shaped groove A, restoring the unlocked state. In the unlocked state, the lifting anti-detachment mechanism does not interfere with the transfer of the sprocket. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a partial view of the hoisting anti-detachment mechanism of this utility model;

[0024] Figure 3 This is a diagram showing the usage state of this utility model.

[0025] In the diagram: 1. Lifting chain assembly; 2. Upper inclined arm; 3. Vertical arm; 4. Lower horizontal arm; 5. Sprocket lifting slot; 6. Lifting anti-detachment mechanism; 6.1. Strip groove A; 6.2. Groove B; 6.3. Strip stop bar; 6.4. Rotating shaft; 6.5. End cap; 6.6. Compression spring; 7. Lifting hole; 8. Lifting ring; 9. Slot side plate A; 10. Slot side plate B; 11. Copper pad; 12. Through hole A; 13. Through hole B; 14. Sprocket. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0027] Example 1, such as Figure 1-2 As shown, the sprocket lifting fixture includes a chain assembly 1 and a vertical arm 3. An inclined upper arm 2 is provided at the upper end of the vertical arm 3, and the chain assembly 1 is mounted on the upper end of the upper arm 2. A lower horizontal arm 4 is vertically fixed to the bottom end of the vertical arm 3, and a sprocket lifting slot 5 is installed on the lower horizontal arm 4. A lifting anti-detachment mechanism 6 is installed on the vertical arm 3. By adding the lifting anti-detachment mechanism 6, the risk of accidental detachment during lifting, placing, and rotating of the sprocket 14 is greatly eliminated, and the operation is simple and the work efficiency is improved.

[0028] Example 2, as Figure 1-2 As shown, the sprocket lifting fixture includes a chain assembly 1 and a vertical arm 3. An inclined upper arm 2 is provided at the upper end of the vertical arm 3, and the chain assembly 1 is installed at the upper end of the upper arm 2. A lower horizontal arm 4 is vertically fixed at the bottom end of the vertical arm 3. A sprocket lifting slot 5 is installed on the lower horizontal arm 4, and a lifting anti-detachment mechanism 6 is installed on the vertical arm 3.

[0029] Furthermore, the top end of the upper inclined arm 2 is provided with a lifting hole 7 for connecting the lifting chain assembly 1, and the other end of the lifting chain assembly 1 has a lifting ring 8. The lifting hole 7 is located above the sprocket lifting slot 5. This prevents the lifting position of the hook from not coinciding with the center of gravity of the sprocket, thus preventing tilting.

[0030] Furthermore, symmetrical slot side plates A9 and B10 are welded inside the sprocket lifting slot 5. Copper pads 11 are welded to the bottom of the sprocket lifting slot 5 and the inner walls of the slot side plates A9 and B10. This enhances the structural strength of the lifting position, prevents deformation of the sprocket lifting slot 5, secures the sprocket in the slot to prevent rotation of the sprocket relative to the slot cavity, and the copper pads 11 prevent scratching the inner hole and machined surface of the sprocket.

[0031] Furthermore, the lifting anti-detachment mechanism 6 includes a strip-shaped stop bar 6.3 capable of rotating from a horizontal state to a vertical state or from a vertical state to a horizontal state. One end of the strip-shaped stop bar 6.3 is fixedly connected to a rotating shaft 6.4, and the other end of the rotating shaft 6.4 passes through the vertical arm 3 and is connected to an end cap 6.5. A compression spring 6.6 is sleeved on the rotating shaft 6.4 between the end cap 6.5 and the vertical arm 3. The compression spring 6.6 provides a thrust to move the end cap 6.5 away from the vertical arm 3. A strip-shaped groove A6.1 matching the strip-shaped stop bar 6.3 is provided along the length direction of the lifting anti-detachment mechanism 6. One end of the strip-shaped groove A6.1 is provided with a groove B6.2 communicating with the strip-shaped groove A6.1. The strip-shaped groove A6.1 and the groove B6.2 are perpendicular to each other. The strip-shaped stop bar 6.3 is located in the strip-shaped groove A6.1 in the vertical state and in the groove B6.2 in the horizontal state.

[0032] Reference Figure 1 and Figure 3 In the unlocked state of the lifting anti-detachment mechanism 6, the strip-shaped stop bar 6.3 is located within the strip-shaped groove A6.1. When the sprocket lifting slot 5 completes the lifting of the sprocket, a locking operation is required before transfer. The process of switching the lifting anti-detachment mechanism 6 from the unlocked state to the locked state is as follows: the operator presses the end cap 6.5 with their finger, causing the rotating shaft 6.4 to push the strip-shaped stop bar 6.3 away from the strip-shaped groove A6.1. Then, the operator controls the strip-shaped stop bar 6.3 to rotate from the vertical state to the horizontal state, releasing the pressure on the end cap 6.5. One end of the strip-shaped stop bar 6.3 is embedded in the groove B6.2. Because the compression spring 6.6 provides a thrust to move the end cap 6.5 away from the vertical arm 3, the strip-shaped stop bar 6.3 is not easily moved out of the groove B6.2. After the strip-shaped stop bar 6.3 switches to the horizontal state, it can restrict the sprocket within the sprocket 14 lifting slot 5, minimizing the risk of the sprocket falling accidentally and eliminating safety hazards in sprocket lifting operations.

[0033] After the transfer is completed, the operator presses the end cap 6.5 with their fingers, causing the rotating shaft 6.4 to push the strip-shaped stop bar 6.3 out of the groove B6.2. Then, the operator controls the strip-shaped stop bar 6.3 to rotate from a horizontal state to a vertical state, releasing the pressure on the end cap 6.5. The strip-shaped stop bar 6.3 is then re-embedded into the strip-shaped groove A6.1, thus restoring the unlocked state. In the unlocked state, the lifting anti-detachment mechanism 6 does not interfere with the transfer of the sprocket.

[0034] Furthermore, the upright arm 3 is provided with through holes A12 and B13 for the rotating shaft 6.4 to pass through. The through holes A12 and B13 are coaxially arranged. The diameter of the through hole A12 is larger than the diameter of the rotating shaft 6.4, and the diameter of the through hole B13 is smaller than the diameter of the rotating shaft 6.4. A stepped platform is formed at the connection between the through hole A12 and the through hole B13.

[0035] Furthermore, the included angle between the upper inclined arm 2 and the vertical arm 3 is set to 45 degrees.

[0036] Furthermore, the upper inclined arm 2, the vertical arm 3, and the lower horizontal arm 4 are integrally formed.

[0037] Furthermore, the lifting ring 8 is a stainless steel shackle.

[0038] The sprocket lifting fixture described in this utility model greatly eliminates the risk of accidental detachment during lifting, placement, and rotation of the sprocket by adding a lifting anti-detachment mechanism. It is also simple to operate and improves work efficiency.

[0039] The sprocket lifting fixture described in this utility model allows the operator to quickly switch the lifting anti-detachment mechanism from the unlocked state to the locked state or vice versa by pressing the end cap with their fingers.

[0040] The sprocket lifting fixture of this utility model allows the operator to press the end cap with their fingers, causing the rotating shaft to push the strip-shaped stop bar out of the groove B. Then, the operator controls the strip-shaped stop bar to rotate from a horizontal state to a vertical state, releasing the pressure on the end cap. The strip-shaped stop bar is then re-embedded into the strip-shaped groove A, restoring the unlocked state. In the unlocked state, the lifting anti-detachment mechanism does not interfere with the transfer of the sprocket.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0042] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A sprocket lifting fixture, comprising a chain assembly (1) and a boom (3), characterized in that: The upper end of the vertical arm (3) is provided with an inclined upper arm (2), the upper end of the upper arm (2) is equipped with a chain assembly (1), the bottom end of the vertical arm (3) is vertically fixed with a lower cross arm (4), the lower cross arm (4) is equipped with a sprocket lifting slot (5), and the vertical arm (3) is equipped with a lifting anti-detachment mechanism (6).

2. The sprocket lifting fixture according to claim 1, characterized in that, The top end of the upper inclined arm (2) is provided with a lifting hole (7) for connecting the chain assembly (1), and the other end of the chain assembly (1) has a lifting ring (8). The lifting hole (7) is located above the sprocket lifting slot (5).

3. The sprocket lifting fixture according to claim 1 or 2, characterized in that, The sprocket hoisting slot (5) is symmetrically welded with slot side plate A (9) and slot side plate B (10), and copper pads (11) are welded to the bottom of the sprocket hoisting slot (5) and the inner walls of the slot side plate A (9) and slot side plate B (10).

4. The sprocket lifting fixture according to claim 3, characterized in that, The hoisting anti-detachment mechanism (6) includes a strip-shaped stop (6.3) capable of rotating from a horizontal to a vertical position or from a vertical to a horizontal position. One end of the strip-shaped stop (6.3) is fixedly connected to a rotating shaft (6.4), and the other end of the rotating shaft (6.4) passes through the vertical arm (3) and is connected to an end cap (6.5). A compression spring (6.6) is sleeved on the rotating shaft (6.4) between the end cap (6.5) and the vertical arm (3). The compression spring (6.6) provides protection for the end cap (6.5) to move away from the vertical arm. The thrust of the boom (3) is provided with a strip groove A (6.1) that matches the strip bar (6.3) along the length of the lifting anti-detachment mechanism (6). One end of the strip groove A (6.1) is provided with a groove B (6.2) that communicates with the strip groove A (6.1). The strip groove A (6.1) and the groove B (6.2) are perpendicular to each other. The strip bar (6.3) is located in the strip groove A (6.1) in the vertical state and in the groove B (6.2) in the horizontal state.

5. The sprocket lifting fixture according to claim 4, characterized in that, The support arm (3) is provided with through holes A (12) and B (13) for the rotating shaft (6.4) to pass through. The through holes A (12) and B (13) are coaxially arranged. The diameter of the through hole A (12) is larger than the diameter of the rotating shaft (6.4), and the diameter of the through hole B (13) is smaller than the diameter of the rotating shaft (6.4). A stepped platform is formed at the connection between the through holes A (12) and B (13).

6. The sprocket lifting fixture according to claim 5, characterized in that, The angle between the upper inclined arm (2) and the vertical arm (3) is set to 45 degrees.

7. The sprocket lifting fixture according to claim 6, characterized in that, The upper inclined arm (2), the vertical arm (3), and the lower horizontal arm (4) are integrally formed.

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