CN215632732U

CN215632732U - Barrel-diameter-adjustable clamp holder for down-the-hole hammer

Info

Publication number: CN215632732U
Application number: CN202122061599.8U
Authority: CN
Inventors: 孙余; 魏亚坤; 范强生; 石信忠
Original assignee: Xuzhou XCMG Foundation Construction Machinery Co Ltd
Current assignee: Xuzhou XCMG Foundation Construction Machinery Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-25
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses a clamp holder for a down-the-hole hammer with an adjustable barrel diameter, which comprises a clamp holder seat, a pair of holding claws, a diameter adjusting barrel, a pair of holding claw oil cylinders and a pair of supporting leg oil cylinders, wherein the holding claws are arranged on the clamp holder seat; the holder seat comprises a front end connecting seat and a rear end connecting seat; the rear ends of the pair of holding claws are connected with the connecting seat at the front end of the gripper seat; the diameter adjusting barrel is formed by splicing two semicircular barrels and is respectively connected with the clamping parts of the pair of holding claws; the pair of claw holding oil cylinders are respectively connected with the middle parts of the pair of claws and the connecting seat at the front end of the gripper seat; the pair of supporting leg oil cylinders are respectively connected with the front ends of the pair of holding claws. The utility model realizes the convenient adjustment of the clamping barrel diameter and the drilling center distance of the clamp holder in the down-the-hole hammer construction process; the auxiliary support of the supporting leg oil cylinder arranged at the front end and the optimized arrangement of the structure improve the stability of the whole structure, and further improve the construction precision.

Description

Barrel-diameter-adjustable clamp holder for down-the-hole hammer

Technical Field

The utility model belongs to the technical field of engineering mechanical equipment, and particularly relates to a clamp holder for a down-the-hole hammer with an adjustable barrel diameter.

Background

In the down-the-hole hammer construction process, the down-the-hole hammer needs to be guided by a clamp holder at the initial rock-entering stage, so that the hole forming precision is ensured. The prior clamp holder for the down-the-hole hammer mainly comprises three types, namely a cylinder type, a claw holding type and a vice type. The cylindrical clamp holder has a simple structure and low cost, but has poor centering performance, is thin and easy to deform, and is difficult to ensure the construction precision; the claw-type clamp has good centering performance, is generally used for large-aperture down-the-hole hammer construction, but has unadjustable barrel diameter and is difficult to be applied to small-aperture construction projects; the vice type can be adjusted according to the construction aperture, but its volume is great, and centering nature is relatively poor, and drilling centre-to-centre spacing can not be adjusted, and hydraulic control system is complicated, and the control range is less. Therefore, a clamp which has the advantages of adjustable barrel diameter, adjustable drilling center distance, good centering performance, simple structure and reliable function is needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide the clamp holder for the barrel-diameter-adjustable down-the-hole hammer, so that the clamp holder can quickly adjust the clamping barrel diameter and the drilling center distance according to the construction working condition while ensuring the centering property, and meanwhile, the clamp holder assists in supporting a drill mast to increase the construction stability.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a clamp holder for a down-the-hole hammer with an adjustable barrel diameter comprises a clamp holder seat, a pair of holding claws, a diameter adjusting barrel, a pair of holding claw oil cylinders and a pair of supporting leg oil cylinders; the holder seat comprises a front end connecting seat and a rear end connecting seat; the rear ends of the pair of holding claws are connected with the connecting seat at the front end of the gripper seat; the diameter adjusting barrel is formed by splicing two semicircular barrels and is detachably connected with the clamping parts of the pair of holding claws respectively; the pair of claw holding oil cylinders are respectively connected with the middle parts of the pair of claws and the connecting seat at the front end of the gripper seat; the pair of supporting leg oil cylinders are respectively connected with the front ends of the pair of holding claws.

The gripper seat is divided into a front end connecting seat and a rear end connecting seat, and the pair of holding claws is connected with the front end connecting seat of the gripper seat so as to reduce the load force arm and effectively improve the strength and stability of the mechanism. The upper end surface of the connecting seat at the rear end of the holder seat is provided with a bolt connecting hole which can be connected with the lower end surface of the drill mast in the host machine through a bolt fastener group.

Furthermore, the pair of holding claws is hinged with the connecting seat at the front end of the gripper seat through a pin shaft.

Furthermore, the pair of claw holding oil cylinders are respectively hinged with the middle parts of the pair of claws and the connecting seat at the front end of the gripper seat through pin shafts.

Furthermore, the diameter adjusting barrel is detachably connected with the pair of holding claws through bolt fasteners. The diameter-adjusting barrel is made into various diameter models according to the requirements of construction aperture so as to meet the requirements of different apertures.

Furthermore, the pair of supporting leg oil cylinders are hinged and fixed with the front ends of the pair of holding claws through pin shafts respectively.

Furthermore, the diameter adjusting barrel is of an eccentric structure, so that the requirements of different drilling center distances can be met.

Furthermore, lugs are arranged on the pair of holding claws and the diameter-adjusting barrel, so that the assembly and disassembly are convenient.

Furthermore, the contact position of the pair of holding claws is provided with an anti-collision cushion block.

Furthermore, rib plates are arranged inside the gripper seat and the pair of holding claws to improve the structural rigidity.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model can adjust the clamping barrel diameter and the drilling center distance of the clamping device according to different working condition requirements of down-the-hole hammer construction, has convenient replacement and large adjustment range, and can ensure higher clamping centering property.

(2) The supporting leg oil cylinder auxiliary support is arranged at the front end of the mechanism, the center of gravity of a drill mast matched with the mechanism is usually higher in down-the-hole hammer construction, and the supporting leg oil cylinder can play an auxiliary support role for the drill mast, so that the construction stability of the whole machine is further improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the present invention with the diameter-adjusting barrel removed.

Fig. 3 is a schematic structural view of the ready-to-operate state of the present invention.

Fig. 4 is a schematic structural view of the diameter-adjusting barrel.

Reference numerals: the device comprises a gripper seat 1, a gripper 2, a clamping claw 3, a diameter adjusting barrel 4, a gripper cylinder 5, a support leg cylinder 6, a lifting lug 7 and an anti-collision cushion block.

Detailed Description

The technical solutions of the present invention will be described in detail and fully with reference to the following specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1

As shown in fig. 1, a gripper for a down-the-hole hammer with an adjustable barrel diameter comprises a gripper seat 1, a pair of holding claws 2, a diameter adjusting barrel 3, a pair of holding claw oil cylinders 4 and a pair of supporting leg oil cylinders 5; the gripper seat 1 comprises a front end connecting seat and a rear end connecting seat, the upper end surface of the rear end connecting seat is provided with a bolt connecting hole, and the upper end surface of the rear end connecting seat can be connected and fixed with the lower end surface of a drill mast in a host through a bolt fastening piece group; the rear ends of the pair of holding claws 2 are hinged with a connecting seat at the front end of the gripper seat 1 through a pin shaft; the diameter-adjusting barrel 3 is formed by splicing two semi-cylindrical barrels and is detachably connected with the clamping parts of the pair of holding claws 2 through bolt fasteners; the diameter adjusting barrel 3 is manufactured into various diameter models according to the construction aperture requirement so as to meet the requirements of different apertures; the pair of claw holding oil cylinders 4 are respectively hinged with the middle parts of the pair of claw holding cylinders 2 and a connecting seat at the front end of the gripper seat 1 through pin shafts; the pair of supporting leg oil cylinders 5 are respectively hinged and fixed with the front ends of the pair of holding claws 2 through pin shafts; lifting lugs 6 are arranged on the pair of holding claws 2 and the diameter-adjusting barrel 3, so that the assembly and disassembly are convenient; the mutual contact part of the pair of holding claws 2 is provided with a rubber anti-collision cushion block 7; and rib plates are arranged in the gripper seat 1 and the pair of holding claws 2 respectively to improve the structural rigidity.

Example 2

The difference between the embodiment and the embodiment 1 is that the diameter-adjusting barrel with an eccentric structure is further arranged to meet the requirements of different drilling center distances.

The working principle of the utility model is as follows:

when the whole machine carries out the hanging rod operation, the utility model is in a preparation working state, as shown in figure 3, at the moment, the claw holding oil cylinder and the supporting leg oil cylinder are contracted to the shortest state, after the hanging rod operation is finished, the claw holding oil cylinder drives the holding claw to limit the hammer head of the down-the-hole hammer in the gripper, so that the hammer head of the down-the-hole hammer can only move in a small range in the horizontal direction, at the moment, the supporting leg oil cylinder extends to contact the ground, the gripper is in a working state, the guiding effect is realized on the down-the-hole hammer, and meanwhile, the auxiliary supporting effect is realized on the whole machine, as shown in figure 1.

When the diameter of the barrel clamped by the clamp holder or the center distance of the drill hole needs to be changed, the diameter adjusting barrel is replaced or cancelled, and the requirements of different working conditions can be met.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are included in the scope of the present invention, and the scope of the present invention is subject to the scope of the claims.

Claims

1. A clamp holder for a down-the-hole hammer with an adjustable barrel diameter is characterized by comprising a clamp holder seat, a pair of holding claws, a diameter adjusting barrel, a pair of holding claw oil cylinders and a pair of supporting leg oil cylinders; the holder seat comprises a front end connecting seat and a rear end connecting seat; the rear ends of the pair of holding claws are connected with the connecting seat at the front end of the gripper seat; the diameter adjusting barrel is formed by splicing two semicircular barrels and is respectively connected with the clamping parts of the pair of holding claws; the pair of claw holding oil cylinders are respectively connected with the middle parts of the pair of claws and the connecting seat at the front end of the gripper seat; the pair of supporting leg oil cylinders are respectively connected with the front ends of the pair of holding claws.

2. A holder for a down-the-hole hammer with an adjustable barrel diameter as set forth in claim 1, wherein the holder seat has a bolt-attaching hole at an upper end surface of a rear end attachment seat.

3. The holder for a down-the-hole hammer with an adjustable barrel diameter of claim 1, wherein the pair of holding claws is hinged to a connecting base at the front end of the holder base through a pin shaft.

4. The holder for the down-the-hole hammer with the adjustable barrel diameter according to claim 1, wherein the pair of claw-holding oil cylinders are respectively hinged with the middle parts of the pair of claws and a connecting seat at the front end of the holder seat through pin shafts.

5. The holder for a down-the-hole hammer with an adjustable barrel diameter of claim 1, wherein the diameter-adjusting barrel is detachably connected with the pair of holding claws through bolt fasteners.

6. The holder for a down-the-hole hammer with an adjustable barrel diameter of claim 1, wherein the pair of leg cylinders are respectively connected with the front ends of the pair of holding claws and are hinged and fixed through pin shafts.

7. A holder for a down-the-hole hammer with adjustable barrel diameter as claimed in claim 1, wherein the diameter-adjustable barrel is of eccentric construction.

8. The holder for a down-the-hole hammer with adjustable barrel diameter of claim 1, wherein the pair of embracing claws and the diameter-adjusting barrel are provided with lifting lugs.

9. The holder for a down-the-hole hammer with an adjustable barrel diameter of claim 1, wherein the contact part of the pair of embracing claws is provided with a crash pad.

10. The holder for the down-the-hole hammer with the adjustable barrel diameter according to claim 1, wherein rib plates are arranged inside the holder seat and the pair of holding claws.