Conical clamping chuck for crawler drilling machine

Abstract

The utility model discloses a conical clamping chuck for a crawler drilling machine, which comprises a hydraulic cylinder, a conical clamping jaw and a cylinder cover, and is characterized in that a piston is connected in the hydraulic cylinder, the piston is connected with the conical clamping jaw in a sliding manner, and the cylinder cover is fixedly connected onto the hydraulic cylinder through a bolt; the utility model has the beneficial effects that the inclined plane made of rigid material is used for controlling the expansion and contraction of the conical clamping jaw, the aims of reducing the maintenance time and prolonging the service life of equipment are fulfilled, a rubber sleeve is not needed, and various problems of the rubber sleeve are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a tapered clamping chuck for a crawler drill. Background Art

[0002] A hydraulic chuck is a clamp controlled by a hydraulic system. It is a device used on various mechanical equipment to clamp workpieces. A hydraulic chuck is an important component of a crawler-type fully hydraulic tunnel drill rig for coal mines for clamping drill rods. Traditional crawler-type fully hydraulic tunnel drill rigs for coal mines have a variety of drill rods. Existing drill chucks use a large rubber sleeve to retract and extend, and control the circular claws to retract and extend the drill rod. Disadvantages: The rubber sleeve has a short life and is easily damaged. The rubber sleeve is generally injection molded with low precision, which will cause the chuck to seal poorly and leak oil. The hardness of the rubber sleeve will change with temperature, and pressure needs to be controlled during use, which is inconvenient to replace. The rubber sleeve has poor oil resistance and will corrode the rubber sleeve if in contact with hydraulic oil for a long time, which is problematic. Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides a tapered clamping chuck for a crawler drill to solve the existing problems.

[0004] The utility model is realized through the following technical scheme: a conical clamping chuck for a crawler drill, comprising a hydraulic cylinder, a conical clamping claw and a cylinder cover, characterized in that a piston is connected inside the hydraulic cylinder, the piston is slidably connected to the conical clamping claw, and the hydraulic cylinder is fixedly connected to the cylinder cover by bolts.

[0005] Preferably, there are four conical claws, springs are connected between the four conical claws, both ends of the conical claws are fixedly connected to guide blocks, and the guide blocks at both ends of the conical claws are slidably connected to the slide grooves of the hydraulic cylinder wall and the slide grooves of the cylinder cover respectively.

[0006] Preferably, a disc spring is fixedly clamped between the conical claw and the cylinder head, and one end of the disc spring is in contact with the piston.

[0007] Preferably, an oil port is provided on the hydraulic cylinder, and a sealing ring is provided between the hydraulic cylinder and the piston.

[0008] Preferably, the outer side surface of the piston is cylindrical, and the inner side surface is conical.

[0009] The beneficial effects of the utility model are embodied in that the inclined surface of the rigid material is used to control the extension and retraction of the conical claw, thereby reducing the maintenance time and increasing the service life of the equipment, and no rubber sleeve is required, thus avoiding various problems of the rubber sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0011] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0014] Figure 4 For this utility model Figure 3 Cross-section view at AA in the middle.

[0015] In the attached figure, 1. hydraulic cylinder, 2. piston, 3. tapered claw, 4. guide block, 5. disc spring, 6. cylinder cover, 7. oil port, 8. sealing ring, 9. spring. DETAILED DESCRIPTION

[0016] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0018] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is inverted, an element described as being "below" another element or feature would be positioned "above" the other element or feature. Thus, the exemplary term "below" can encompass both above and below orientations.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "and / or" includes a set of one or more associated listed items.

[0020] In order to make the above objectives, features and advantages of the present application more apparent, the following describes the specific implementation of the present application in combination with specific embodiments: as shown in the drawings Figure 1-Figure 4 The present application is implemented by the following technical solutions: a conical clamping chuck for a crawler drill, comprising a hydraulic cylinder 1, a conical clamping jaw 3 and a cylinder cover 6, characterized in that: a piston 2 is connected in the hydraulic cylinder 1, the piston 2 is slidingly connected to the conical clamping jaw 3, and the cylinder cover 6 is fixedly connected to the hydraulic cylinder 1 by bolts.

[0021] The conical clamping jaw 3 is provided with four, and springs 9 are connected between the four conical clamping jaws 3, the conical clamping jaw 3 is fixedly connected to a guide block 4 at both ends, and the guide blocks 4 at both ends of the conical clamping jaw 3 are slidingly connected in the sliding grooves of the cylinder wall of the hydraulic cylinder 1 and the sliding grooves of the cylinder cover 6.

[0022] A disc spring 5 is fixedly clamped between the conical clamping jaw 3 and the cylinder cover 6, and one end of the disc spring 5 is in contact with the piston 2.

[0023] An oil port 7 is arranged on the hydraulic cylinder 1, and a sealing ring 8 is arranged between the hydraulic cylinder 1 and the piston 2.

[0024] The outer side of the piston 2 is cylindrical, and the inner side is conical.

[0025] The working principle of the present application is as follows: the drill bit is placed in the conical clamping jaw 3, the hydraulic cylinder 1 is supplied with oil through the oil port 7, at this time the piston 2 extends out of the hydraulic cylinder 1, the disc spring 5 is pressed, the piston 2 is in contact with the conical clamping jaw 3, the guide blocks 4 at both ends of the conical clamping jaw 3 move along the sliding grooves of the hydraulic cylinder 1 and the cylinder cover 6, the four conical clamping jaws 3 clamp the drill bit, and the springs 9 between the conical clamping jaws 3 are pressed; when the drill bit needs to be removed, the hydraulic cylinder 1 is closed to make the oil flow out along the oil port 7, at this time the piston 2 is retracted under the reaction force of the disc spring 5, and the four conical clamping jaws 3 are reset under the reaction force of the springs 9 without being pressed by the piston 2.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A conical clamping chuck for a crawler drill, comprising a hydraulic cylinder (1), a conical clamping jaw (3) and a cylinder cover (6), characterized in that: The hydraulic cylinder (1) is internally connected to a piston (2), the piston (2) is slidably connected to a conical claw (3), and the hydraulic cylinder (1) is fixedly connected to a cylinder cover (6) by means of bolts.

2. The tapered clamping chuck for a crawler drill according to claim 1, characterized in that: Four conical claws (3) are provided, and springs (9) are connected between the four conical claws (3). Both ends of the conical claws (3) are fixedly connected to guide blocks (4), and the guide blocks (4) at both ends of the conical claws (3) are slidably connected to the slide grooves of the cylinder wall of the hydraulic cylinder (1) and the slide grooves of the cylinder cover (6).

3. The tapered clamping chuck for a crawler drill according to claim 1, characterized in that: The conical claw (3) and the cylinder cover (6) are used to fix and clamp the disc spring (5), and one end of the disc spring (5) is in contact with the piston (2).

4. The tapered clamping chuck for a crawler drill according to claim 1, characterized in that: An oil port (7) is provided on the hydraulic cylinder (1), and a sealing ring (8) is provided between the hydraulic cylinder (1) and the piston (2).

5. The tapered clamping chuck for a crawler drill according to claim 1, characterized in that: The outer side surface of the piston (2) is cylindrical, and the inner side surface is conical.

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