Expanding cone claw

Abstract

The utility model discloses an expansion cone claw which comprises a cone claw body, a butt joint slot which is formed in the cone claw body and is used for an expansion arm to be inserted, and a fixing hole which is formed in the cone claw body, one side face of the cone claw body is provided with clamping fine insection, and the other side face of the cone claw body is provided with expansion insection. The conical claw comprises a conical claw body and a clamping thin insection, the conical claw body is provided with expanding insections, the expanding insections comprise expanding sparse insections and expanding thin insections, the conical claw body comprises a main body part and a secondary body part, the expanding sparse insections are arranged on the main body part, the expanding thin insections and the clamping thin insections are arranged on the secondary body part, and a fixing assembly enabling the main body part and the secondary body part to be detachable is arranged between the main body part and the secondary body part. The utility model has the following advantages and effects: the later replacement and maintenance cost of the product can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fire-fighting hydraulic expander accessory, in particular to an expansion cone claw. BACKGROUND

[0002] The fire-fighting hydraulic expander is an important fire-fighting rescue equipment, and is widely used in various emergency rescue occasions, such as fire, traffic accident, earthquake and the like disaster sites. The fire-fighting hydraulic expander utilizes the hydraulic principle to generate a strong mechanical force, and drives the expansion arm to expand or clamp through the high-pressure hydraulic oil to push the piston to move. It is usually composed of a hydraulic cylinder, a piston, a hydraulic oil supply system, a control valve block, an expansion arm and an expansion cone claw.

[0003] The expansion cone claw is sleeved on the expansion arm and is fixed through a fixing member. In order to ensure that the expansion cone claw stably expands or clamps, anti-skid tooth patterns are arranged on two acting surfaces of the expansion cone claw, and the anti-skid tooth patterns mainly include fine tooth patterns and sparse tooth patterns. In most rescue occasions, the fine tooth patterns are used frequently, and thus are easily worn. Once the fine tooth patterns are worn, the entire expansion cone claw needs to be replaced, which greatly increases the replacement and maintenance cost in the later period. SUMMARY

[0004] The utility model aims at providing an expansion cone claw which can reduce the replacement and maintenance cost in the later period.

[0005] The above technical purpose of the utility model is realized through the following technical scheme: an expansion cone claw, which comprises a cone claw body, a butt joint slot formed in the cone claw body and used for inserting an expansion arm, and a fixing hole arranged on the cone claw body, one side surface of the cone claw body is provided with a clamping fine tooth pattern, and the other side surface is provided with an expansion tooth pattern, the expansion tooth pattern comprises an expansion sparse tooth pattern and an expansion fine tooth pattern, the cone claw body comprises a main body part and a secondary body part, the expansion sparse tooth pattern is arranged on the main body part, and the expansion fine tooth pattern and the clamping fine tooth pattern are arranged on the secondary body part, and a fixing assembly which realizes the detachable fixing of the main body part and the secondary body part is arranged between the main body part and the secondary body part.

[0006] Through the fixing assembly, the main body part and the secondary body part are fixed as a whole. Since the fine tooth pattern is a frequently used position which is easily worn, the expansion fine tooth pattern and the clamping fine tooth pattern are arranged on the secondary body part, so that the maintenance operation of the cone claw can be completed by replacing the secondary body part and retaining the main body part through the detachable fixing assembly, thereby reducing the replacement and maintenance cost in the later period.

[0007] Further, the fixing hole is arranged on the main body part, the butt joint slot is arranged between the main body part and the secondary body part and is formed by the main body part and the secondary body part, and one side of the secondary body part which constitutes the butt joint slot is located on the side opposite to the expansion sparse tooth pattern.

[0008] By adopting the technical scheme, the main body part is fixed to the expansion arm through the fixing hole, and the secondary body part is fixed to the main body part through the fixing assembly, so that the separate replacement operation of the secondary body part does not need to disassemble both the main body part and the expansion arm, and the later replacement and maintenance operation is more convenient.

[0009] Further, when the expansion arm is inserted into the docking slot and abuts against the main body part and the secondary body part at the same time, a clearance is formed between the main body part and the secondary body part.

[0010] By adopting the technical scheme, the stress on the secondary body part can be transmitted to the expansion arm in abutment to bear, and the clearance formed can ensure the close abutment between the main body part and the expansion arm and between the secondary body part and the expansion arm, so that the setting structure has sufficient structural strength to ensure the implementability of the scheme.

[0011] Further, the fixing assembly comprises a limiting structure for assembling and limiting the main body part and the secondary body part and a locking structure, the limiting structure has a limiting state and a non-limiting state, and the locking structure locks the limiting structure in the limiting state.

[0012] By adopting the technical scheme, the limiting structure cooperates with the locking structure to constitute the detachable fixing of the main body part and the secondary body part.

[0013] Further, the limiting structure comprises a limiting plug fixed to the secondary body part and a limiting slot provided on the main body part and inserted by the limiting plug, and a clearance is formed between the limiting slot and the limiting plug for the movement of the limiting plug in the direction from the clamping tooth pattern to the expansion tooth pattern.

[0014] By adopting the technical scheme, the limiting plug is inserted into the limiting slot to constitute the limiting of the main body part and the secondary body part, and the clearance is formed to cooperate with the clearance gap to ensure the close abutment between the main body part and the expansion arm and between the secondary body part and the expansion arm, so that the limiting structure does not interfere with the cooperation relationship between the three.

[0015] Further, the locking structure comprises a locking waist-shaped hole provided on the secondary body part and a locking bolt penetrating through the locking waist-shaped hole and threadedly connected with the main body part.

[0016] By adopting the technical scheme, the locking bolt is threadedly connected with the main body part through the locking waist-shaped hole to constitute the locking and unlocking operation, and the locking waist-shaped hole is provided to cooperate with the clearance gap to ensure the close abutment between the main body part and the expansion arm and between the secondary body part and the expansion arm, so that the structure does not interfere with the cooperation relationship between the three.

[0017] In summary, the utility model has the following beneficial effects: the utility model can reduce the replacement and maintenance cost in the later period of products. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 Structure schematic view of the embodiment;

[0019] Fig. 2 Partial sectional view of the embodiment;

[0020] Fig. 3 Exploded view of the embodiment;

[0021] Fig. 4 Sectional view of the embodiment.

[0022] In the figure: 1, butt joint slot; 2, fixed hole; 3, clamping fine tooth pattern; 4, expansion tooth pattern; 41, expansion sparse tooth pattern; 42, expansion fine tooth pattern; 51, main body part; 52, secondary body part; 6, excess gap; 7, limiting structure; 71, limiting plug; 72, limiting slot; 8, excess interval; 9, locking structure; 91, locking waist-shaped hole; 92, locking bolt; 10, expansion arm. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in combination with the drawings.

[0024] Reference Figs. 1 to 4 A kind of expansion cone claw, including cone claw body, the butt joint slot 1 formed in cone claw body and for expansion arm 10 insertion and the fixed hole 2 opened in cone claw body, one side of cone claw body is equipped with clamping fine tooth pattern 3, another side is equipped with expansion tooth pattern 4, expansion tooth pattern 4 includes expansion sparse tooth pattern 41 and expansion fine tooth pattern 42.Cone claw body includes main body part 51 and secondary body part 52, the expansion sparse tooth pattern 41 is opened in main body part 51, expansion fine tooth pattern 42 and clamping fine tooth pattern 3 are opened in secondary body part 52.Main body part 51 and secondary body part 52 are equipped with the fixed assembly that can realize the detachable of main body part 51 and secondary body part 52.

[0025] The fixed hole 2 is opened in main body part 51, the butt joint slot 1 is arranged between main body part 51 and secondary body part 52 and is formed by the two, and one side of secondary body part 52 for forming butt joint slot 1 is located at the side opposite expansion sparse tooth pattern 41.

[0026] When expansion arm 10 is inserted into butt joint slot 1 and simultaneously abuts main body part 51 and secondary body part 52, excess gap 6 is formed between main body part 51 and secondary body part 52.Fixed assembly includes limiting structure 7 for constituting the assembly limit of main body part 51 and secondary body part 52 and locking structure 9, limiting structure 7 has limiting state and non-limiting state, and locking structure 9 locks limiting structure 7 in limiting state.

[0027] The limiting structure 7 comprises a limiting plug 71 integrally arranged on the secondary body part 52 and a limiting slot 72 provided on the main body part 51 and for the limiting plug 71 to be inserted into. The limiting slot 72 and the limiting plug 71 form a clearance 8 for the limiting plug 71 to move in the direction from the clamping fine tooth pattern 3 to the expansion tooth pattern 4. The locking structure 9 comprises a locking waist-shaped hole 91 provided on the secondary body part 52 and a locking bolt 92 penetrating through the locking waist-shaped hole 91 and threadedly connected with the main body part 51.

[0028] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. An expansion cone, comprising a cone body, a docking slot (1) formed in the cone body for inserting an expansion arm (10), and a fixing hole (2) provided on the cone body, one side of the cone body is provided with a clamping fine tooth pattern (3), and the other side is provided with an expansion tooth pattern (4), characterized in that: The expansion tooth pattern (4) comprises an expansion sparse tooth pattern (41) and an expansion fine tooth pattern (42), the tapered jaw body comprises a main body part (51) and a secondary body part (52), the expansion sparse tooth pattern (41) is arranged on the main body part (51), the expansion fine tooth pattern (42) and the clamping fine tooth pattern (3) are arranged on the secondary body part (52), and a fixing assembly for detachably fixing the main body part (51) and the secondary body part (52) is arranged between the main body part (51) and the secondary body part (52).

2. The expanding cone jaw of claim 1, wherein: The fixing hole (2) is arranged on the main body part (51), the butt joint slot (1) is arranged between the main body part (51) and the secondary body part (52) and is formed by the main body part (51) and the secondary body part (52), and the secondary body part (52) is used to form one side of the butt joint slot (1) located on the side opposite to the expansion sparse tooth pattern (41).

3. The expansion cone jaw of claim 2, wherein: When the expansion arm (10) is inserted into the butt joint slot (1) and abuts against the main body part (51) and the secondary body part (52), a residual gap (6) is formed between the main body part (51) and the secondary body part (52).

4. The expanding cone jaw of claim 3, wherein: The fixing assembly comprises a limiting structure (7) and a locking structure (9), the limiting structure (7) is used for limiting assembly of the main body part (51) and the secondary body part (52), the limiting structure (7) has a limiting state and a non-limiting state, and the locking structure (9) is used for locking the limiting structure (7) in the limiting state.

5. The expansion cone jaw of claim 4, wherein: The limiting structure (7) comprises a limiting plug (71) fixedly arranged on the secondary body part (52) and a limiting slot (72) arranged on the main body part (51) and used for inserting the limiting plug (71), and a residual interval (8) for movement of the limiting plug (71) in a direction from the clamping fine tooth pattern (3) to the expansion tooth pattern (4) is formed between the limiting slot (72) and the limiting plug (71).

6. The expanding cone jaw of claim 4, wherein: The locking structure (9) comprises a locking waist-shaped hole (91) arranged on the secondary body part (52) and a locking bolt (92) penetrating through the locking waist-shaped hole (91) and threadedly connected with the main body part (51).

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