CN215632800U

CN215632800U - Connection structure and rock drill of girder tip

Info

Publication number: CN215632800U
Application number: CN202121381862.5U
Authority: CN
Inventors: 刘宝林; 杨能春
Original assignee: Guangdong Huishan Intelligent Machinery Co ltd
Current assignee: Foshan Yixingbai Intelligent Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-01-25
Anticipated expiration: 2031-06-21

Abstract

The utility model relates to the technical field of rock drills and discloses a connecting structure for an end part of a crossbeam and a rock drill. The connection structure of girder end portion includes: girder, spout, sprocket shaft and end and support the mechanism, all be provided with the spout on the both sides wall of girder one end, and the one end of spout has been seted up and has been dodged the position, dodges the installation that the position is used for spout and sprocket shaft, and the sprocket cover is located on the sprocket shaft, and the spout is passed at the both ends of sprocket shaft, and sprocket shaft and spout sliding connection, ends to support the mechanism and set up in the tip of girder, and the sprocket shaft with end to support the mechanism and be connected. The avoiding position is arranged in the sliding groove, and when the chain wheel shaft is in the avoiding position, the chain wheel and the chain wheel shaft can be conveniently mounted and dismounted in the girder by utilizing the avoiding position.

Description

Connection structure and rock drill of girder tip

Technical Field

The utility model relates to the technical field of rock drills, in particular to a connecting structure of a girder end part and a rock drill.

Background

Rock drills are tools used to directly mine rock material. It drills blastholes in the rock formations to deposit explosives to blast the rock to complete the extraction of rock material or other stone work. Furthermore, rock drills may also be used as breakers for breaking hard layers such as concrete.

The rock drill works according to the principle of impact crushing, when the rock drill works, the piston does high-frequency reciprocating motion to continuously impact the drill bit shank, and under the action of impact force, the wedge-shaped drill bit crushes rocks and drills the rocks to a certain depth to form a dent. After the piston is withdrawn, the drill rod rotates a certain angle, the piston moves forwards, and a new dent is formed when the piston impacts the drill rod end again. The sector rock between two dents is sheared by the horizontal component force generated on the drill bit, the piston continuously impacts the drill bit shank, and the compressed air or the pressure water is continuously input from the central hole of the drill bit to discharge rock slag out of the hole, namely, a circular drill hole with a certain depth is formed.

In the prior art, the girder of a rock drill is used as the main part of a feed beam, on which a reciprocating system consisting of a number of chain wheels and chains is mounted. Generally, the sprocket at the end of the girder is fixed by installing and limiting the rotating shaft of the sprocket in the sliding groove, fixing the sliding groove combined with the sprocket at the corresponding installation position in the girder, and finally closing the end of the girder to prevent the sliding groove from loosening, but the installation and the disassembly of the sprocket are not facilitated by the structure.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a connecting structure of a girder end part, and aims to solve the technical problem that a chain wheel at the girder end part is inconvenient to mount and dismount.

In order to achieve the purpose, the utility model provides a connecting structure of a girder end part, which comprises a girder, a sliding groove, a chain wheel shaft and a stop mechanism, wherein the sliding groove is formed in two side walls of one end of the girder, an avoiding position is formed in one end of the sliding groove and used for mounting the sliding groove and the chain wheel shaft, the chain wheel is sleeved on the chain wheel shaft, two ends of the chain wheel shaft penetrate through the sliding groove and are in sliding connection with the sliding groove, the stop mechanism is arranged at the end part of the girder, and the chain wheel shaft is connected with the stop mechanism.

Optionally, the avoidance position on the sliding groove is arranged on one side far away from the end part of the girder.

Optionally, the avoiding position is circular or elliptical, and the avoiding position is connected with the sliding groove.

Optionally, the groove width of the sliding groove is matched with the shaft diameter of the sprocket shaft, and the sprocket shaft slides along the sliding groove.

Optionally, the width of the avoiding position is greater than the width of the sliding groove.

Optionally, the mechanism is supported to ending includes mounting panel, limiting plate and buffering unit, the mounting panel set up in the opening part of girder tip, limiting plate parallel arrangement in the inboard of girder, just the limiting plate with the lateral wall fixed connection of girder, the end of limiting plate with mounting panel fixed connection, the buffering unit with the sprocket shaft is connected, the buffering unit is used for the buffering the sprocket shaft is followed the spout slides.

Optionally, the both sides of sprocket all are provided with the buffer unit, every the buffer unit is including adjusting pole, spring and adjusting nut, the one end of adjusting the pole is provided with the axle sleeve, the axle sleeve cover is located sprocket epaxial, it passes to adjust the pole the mounting panel, adjusting nut set up in adjust the other end of pole, the spring housing is located on adjusting the pole, just the spring spacing in the mounting panel with between the adjusting nut.

Optionally, the buffer stroke of the buffer unit is smaller than the length of the chute, and the avoidance position is not in the buffer stroke of the buffer unit.

Optionally, the limiting plate is higher than the side wall of the girder, and a limiting step is arranged on the limiting plate.

A rock drill comprises the connecting structure of the end part of the crossbeam.

According to the technical scheme provided by the utility model, a circular or elliptical avoidance position is arranged on one side of the sliding groove far away from the tail end of the girder, the groove width of the avoidance position is larger than the shaft diameter of the chain wheel shaft, when the chain wheel shaft is at the avoidance position, the avoidance position can be used for facilitating the installation and the disassembly of the chain wheel and the chain wheel shaft in the girder, and the complex operation that the chain wheel, the chain wheel shaft and the sliding groove are combined into a whole and then fixed on the girder in the prior art is avoided.

Drawings

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

FIG. 1 is a perspective view of one embodiment of a connection structure for ends of girders according to the present invention;

FIG. 2 is a front view of FIG. 1;

fig. 3 is a top view of fig. 1.

In the figure: 1-a girder; 2-a chute; 21-avoidance position; 3-a sprocket; 4-sprocket shaft; 5-a stop mechanism; 51-a mounting plate; 52-limiting plate; 521-an opening; 53-a buffer unit; 531-adjusting the lever; 532-spring; 533-adjusting nut; 534-shaft sleeve.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.

Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. 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 invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

Fig. 1 is a schematic perspective view of a connection structure of a girder end according to an embodiment of the present invention.

A connecting structure of a girder end part comprises a girder 1, sliding grooves 2, a chain wheel 3, a chain wheel shaft 4 and a stop mechanism 5, wherein the girder 1 is of a hollow concave structure, the sliding grooves 2 are fixedly arranged on the side walls of the left side and the right side of one end of the girder 1, the two sliding grooves 2 on the side wall of the girder 1 are symmetrically arranged, one end of each sliding groove 2 is provided with a avoiding position 21, and the avoiding positions 21 are used for facilitating the installation and the disassembly of the sliding grooves 2 and the chain wheel shaft 4; the chain wheel 3 is arranged in the girder 1, the chain wheel 3 is sleeved on the chain wheel shaft 4 through a bearing to realize the movable connection of the chain wheel 3 and the chain wheel shaft 4, a chain (not shown) is arranged on the chain wheel 3, and the chain wheel 3 is connected with other chain wheels on the girder through the chain to complete corresponding actions; the left end and the right end of the chain wheel shaft 4 penetrate through the sliding grooves 2, the chain wheel shaft 4 can slide back and forth along the sliding grooves 2, the support preventing mechanism 5 is arranged at the end position of the girder 1, the chain wheel shaft 4 is connected with the support preventing mechanism 5, and the support preventing mechanism is used for limiting and buffering a supporting plate (not shown) on the girder 1 to prevent the supporting plate from sliding out of the tail end of the girder 1.

In this embodiment, the avoiding position 21 at one end of the sliding groove 2 is disposed on one side away from the end of the girder 1, because the end of the sliding groove 2 is closer to the end of the girder 1, if the avoiding position 21 is disposed at the end close to the girder 1, when the stopping mechanism 5 buffers and limits the sprocket shaft 4, if the sprocket shaft 4 slides to the avoiding position 21 due to the too large traveling distance, the sprocket shaft 4 is easily separated from the sliding groove 2, which causes danger.

In this embodiment, the avoiding position 21 is circular or elliptical, and the avoiding position 21 is connected to the sliding groove 2, so as to facilitate the sliding of the sprocket shaft 4 between the avoiding position 21 and the sliding groove 2.

In the embodiment, the groove width of the sliding groove 2 is matched with the shaft diameter of the sprocket shaft 4, that is, the groove width of the sliding groove 2 is just slightly larger than the shaft diameter of the sprocket shaft 4, so that the sprocket shaft 4 can slide back and forth along the sliding groove 2 and cannot loosen to deviate; the groove width of the avoiding position 21 is larger than that of the sliding groove 2, so that the sprocket shaft 4 can be conveniently mounted and dismounted at the avoiding position 21.

In this embodiment, the stopping mechanism 5 includes a mounting plate 51, a limiting plate 52 and a buffering unit 53, the mounting plate 51 is disposed at an opening at an end of the girder 1 and is used for closing a terminal opening of the girder 1, the limiting plate 52 is disposed at an inner side of the girder 1 in parallel, the limiting plate 52 is fixedly connected to a side wall of the girder 1, an opening 521 is disposed below the limiting plate 52, the opening 521 is used for avoiding a traveling path of the sprocket shaft 4 along the chute 2, a front end of the limiting plate 52 is used for stopping and limiting a supporting plate (not shown) sliding on the girder 1, a terminal of the limiting plate 52 is fixedly connected to the mounting plate 51, the buffering unit 53 is connected to the sprocket shaft 4, and the buffering unit 53 is used for buffering a reciprocating sliding of the sprocket shaft 4 along the chute 2.

Referring to fig. 2, in the present embodiment, the limiting plate 52 is higher than the side wall of the girder 1, and a limiting step is further provided on the limiting plate 52.

Referring to fig. 1 and 3, in the present embodiment, two sides of the sprocket 3 are provided with one buffer unit 53, each buffer unit 53 includes an adjusting rod 531, a spring 532, and an adjusting nut 533, one end of the adjusting rod 531 is provided with a shaft sleeve 534, and the shaft sleeve 534 is fixedly connected with the adjusting rod 531, the shaft sleeve 534 is sleeved on the sprocket shaft 3, and the shaft sleeve 534 is movably connected with the sprocket shaft 4, the adjusting rod 531 passes through the mounting plate 51 and extends out of the end of the girder 1, and a thread is provided on the adjusting rod 531, the adjusting nut 533 is disposed at the other end of the adjusting rod 531, the spring 532 is sleeved on the adjusting rod 531, and the spring 532 is limited between the mounting plate 51 and the adjusting nut 533.

When the chain wheel shaft 4 and the chain wheel 3 move along the sliding groove 2 to the middle of the girder 1, the adjusting rod 531 is driven to reduce the distance extending out of the girder 1, and at the same time, the spring 532 clamped between the mounting plate 51 and the adjusting nut 533 is compressed; when the sprocket shaft 4 and the sprocket 3 move along the sliding groove 2 toward the end of the girder 1, the adjusting rod 531 is driven to extend out of the girder 1 by an increased distance, and at this time, the spring 532 interposed between the mounting plate 51 and the adjusting nut 533 is reset.

In the present embodiment, the cushion stroke of the cushion unit 53 is smaller than the length of the chute 2, and the escape position 21 is not in the cushion stroke of the cushion unit 53, so as to prevent the sprocket shaft 4 from falling off and causing a danger.

The utility model also provides a rock drill which comprises the connecting structure at the end part of the crossbeam.

The utility model has the advantages that a circular or elliptical avoiding position is arranged on one side of the sliding groove far away from the tail end of the girder, the groove width of the avoiding position is larger than the shaft diameter of the chain wheel shaft, when the chain wheel shaft is at the avoiding position, the chain wheel and the chain wheel shaft can be conveniently installed and detached in the girder by utilizing the avoiding position, and the complex operation that the chain wheel, the chain wheel shaft and the sliding groove are combined into a whole and then fixed on the girder in the prior art is avoided.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the utility model, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connection structure of a girder end portion, comprising: girder, spout, sprocket shaft and end the mechanism of supporting, all be provided with on the both sides wall of girder one end the spout, just the one end of spout has been seted up and has been dodged the position, dodge the position and be used for the spout with the installation of sprocket shaft, the sprocket cover is located the sprocket shaft is epaxial, the both ends of sprocket shaft are passed the spout, just the sprocket shaft with spout sliding connection, end support the mechanism set up in the tip of girder, just the sprocket shaft with end support the mechanism and be connected.

2. A girder end connection structure according to claim 1, wherein the escape position on the slide groove is provided on a side away from the girder end.

3. The connecting structure of an end portion of a girder according to claim 2, wherein the escape portion is formed in a circular or elliptical shape, and the escape portion is engaged with the sliding groove.

4. A girder end connecting structure according to claim 3, wherein a groove width of the slide groove is adapted to a shaft diameter of the sprocket shaft, and the sprocket shaft slides along the slide groove.

5. A girder end connection structure according to claim 4, wherein the width of the escape groove is larger than the width of the slide groove.

6. The connecting structure of girder end portions according to any one of claims 1 to 5, wherein the stopping mechanism includes a mounting plate, a limiting plate and a buffering unit, the mounting plate is disposed at an opening of the girder end portion, the limiting plate is disposed in parallel at an inner side of the girder, the limiting plate is fixedly connected to a side wall of the girder, a tail end of the limiting plate is fixedly connected to the mounting plate, the buffering unit is connected to the sprocket shaft, and the buffering unit is used for buffering the sprocket shaft to slide along the sliding groove.

7. The connecting structure of the end part of the girder according to claim 6, wherein the two sides of the chain wheel are provided with buffer units, each buffer unit comprises an adjusting rod, a spring and an adjusting nut, one end of the adjusting rod is provided with a shaft sleeve, the shaft sleeve is sleeved on the chain wheel shaft, the adjusting rod penetrates through the mounting plate, the adjusting nut is arranged at the other end of the adjusting rod, the spring is sleeved on the adjusting rod, and the spring is limited between the mounting plate and the adjusting nut.

8. A girder end connecting structure according to claim 7, wherein a cushion stroke of the cushion unit is smaller than a length of the slide groove, and the escape position is not within the cushion stroke of the cushion unit.

9. A girder end connection structure according to claim 6, wherein the limiting plate is higher than the side wall of the girder, and a limiting step is provided on the limiting plate.

10. Rock drilling machine, characterized in that it comprises a connection of the beam ends according to any of claims 1-9.