Novel connecting structure of rock drill shell

Abstract

The utility model discloses a novel connecting structure of a rock drill casing, which comprises a casing body, the casing body comprises a front casing, a middle casing and a rear casing, and a screw connecting component is arranged on the casing body. The screw connecting assembly comprises a middle short screw, two double-end side screws on the two sides and two hexagonal long screws at the bottom, the middle short screw is used for being locked to the top of the front shell and the top of the middle shell, and the two double-end side screws penetrate through the front shell, the middle shell and the rear shell. According to the rock drill machine shell, a novel five-screw-rod connecting structure is adopted, the screw rods are evenly distributed on the contact faces of the shell bodies, the five screw rods only need to be locked according to the specified torque in the installation and maintenance process, and therefore the rock drill machine shell can be installed and maintained conveniently. The possibility that the machine is damaged due to bolt loosening in the machine operation process can be greatly reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock drill technology field, concretely to a novel connecting structure of rock drill casing. BACKGROUND

[0002] Rock drill is used to the construction equipment of drilling hole to rock layer, and the existing tunnel engineering, mine engineering often uses rock drill to punch the hole to tunnel inner wall, roadway inner wall and rock, so as to install supporting facilities, set up explosive etc.

[0003] The connecting of the casing body of the traditional rock drill is the connecting mode of three screw rods, and the traditional three screw rod connection is distributed in the upper, lower left and lower right of the casing body in a triangular shape, and the traditional three screw rod connecting mode has the following problems and defects: one, the uneven locking force leads to frequent maintenance during the operation of the machine; two, the rock drill causes the corrosion of the contact surface due to the loosening of the local bolt during the working process, which reduces the service life of the product, therefore, further optimization is required. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a novel connecting structure of rock drill casing, which adopts a five-screw rod novel connecting structure, the screw rods are evenly distributed on the contact surface of the casing, and only five screw rods need to be locked according to the specified torque during installation and maintenance, which can greatly reduce the possibility of bolt loosening and damage to the machine during the operation of the machine, and improve the service life.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A novel connecting structure of rock drill casing, comprising a casing body, the casing body comprises a front casing, a middle casing and a rear casing, a screw rod connecting assembly is arranged on the casing body, the screw rod connecting assembly comprises a middle short screw rod, two double-headed side screw rods on both sides and two hexagonal long screw rods at the bottom, the middle short screw rod is used for locking on the top of the front casing and the middle casing, the two double-headed side screw rods are arranged through the front casing, the middle casing and the rear casing, and the two hexagonal long screw rods are used for locking the bottom of the middle casing and the rear casing.

[0007] Preferably, the front casing is provided with a middle hole, the middle casing is provided with a middle locking platform, and the middle short screw rod penetrates the middle hole and is matched on the middle locking platform.

[0008] Preferably, the front shell, the middle shell and the rear shell are provided with side through holes, the front shell is provided with a locking nut, one end of the double-headed side screw is fixedly connected with the locking nut, and the other end of the double-headed side screw penetrates through the rear shell and is exposed outside.

[0009] Preferably, the middle shell and the rear shell are provided with mounting holes for locking of the hexagonal long screw.

[0010] Preferably, the double-headed side screw comprises at least three abutting rod portions and clearance rod portions arranged between the abutting rod portions, the abutting rod portions have a larger cross-sectional diameter than the clearance rod portions, the abutting rod portions have a shorter length than the clearance rod portions, and eccentric platforms are arranged between adjacent two abutting rod portions.

[0011] Preferably, the hexagonal long screw comprises a hexagonal platform portion, a long screw portion and a connecting rod portion arranged close to the hexagonal platform portion, and the connecting rod portion has a larger cross-sectional diameter than the long screw portion.

[0012] Preferably, the middle short screw, the double-headed side screw and the hexagonal long screw are made of alloy steel.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The novel connecting structure of the rock drill machine shell replaces the three-screw connection with a five-link connection, changes the locking screw distribution mode into a five-edged connection mode, increases the contact area of the shell, makes the shell parts tightly contact, avoids the situation that the locking force is uneven and causes frequent maintenance during the operation of the machine, greatly reduces the operation burden of the operator, and prolongs the service life of the machine.

[0015] 2. The novel connecting structure of the rock drill machine shell greatly reduces the situation that the rock drill is corroded at the contact surface due to loosening of the local screw during the operation, can greatly reduce the possibility that the machine is damaged due to loosening of the screw during the operation of the machine, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model discloses a novel connecting structure of a rock drill machine shell Figure 1 ;

[0017] Figure 2 The utility model discloses a novel connecting structure of a rock drill machine shell Figure 2 ;

[0018] Figure 3 The utility model discloses a novel connecting structure of a rock drill machine shell. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0020] Please refer to Figures 1 to 3 The utility model provides a new connection structure of rock drill housing, including housing body 100, housing body 100 includes front shell body 1, middle shell body 2 and rear shell body 3, be provided with screw rod connecting assembly 101 on housing body 100, screw rod connecting assembly 101 includes middle short screw rod 4, two double -end side screw rods 5 of both sides and the installation hole 8 of two hexagonal long screw rods 6 for locking, middle short screw rod 4 is used to lock in the top of front shell body 1 and middle shell body 2, two double -end side screw rods 5 are set up and pass through front shell body 1, middle shell body 2 and rear shell body 3, two hexagonal long screw rods 6 are used to lock the bottom of middle shell body 2 and rear shell body 3, with five connecting rod connection mode replaces three screw rod connection, changes locking screw distribution mode cross section and presents five -sided connection mode, increases shell contact area, makes each part shell close contact, avoids the present situation that locking force is uneven and leads to frequent overhaul in the machine operation process, greatly reduces the operation burden of the operator, prolongs the service life of the machine.

[0021] Front shell body 1 is provided with middle -placed hole 11, and middle shell body 2 is provided with middle -placed locking platform 21, and middle short screw rod 4 penetrates middle -placed hole 11 and is matched on middle -placed locking platform 21, and middle short screw rod 4 ensures the effective locking of front shell body 1 and middle shell body 2, and completes initial connection.

[0022] Front shell body 1, middle shell body 2 and rear shell body 3 are all provided with side through -hole 7, and front shell body 1 is provided with locking nut 12, one end of double -end side screw rod 5 is fixedly connected with locking nut 12, the other end passes out rear shell body 3 and is exposed outside, and locking nut 12 ensures the effective locking of double -end side screw rod 5, and completes transition connection.

[0023] Middle shell body 2 and rear shell body 3 are all provided with installation hole 8 for locking hexagonal long screw rod 6, and installation hole 8 ensures the effective locking of hexagonal long screw rod 6, and completes integral five screw rod integral locking.

[0024] The double-head side screw 5 comprises at least three abutting rod portions 51 and clearance rod portions 52 arranged between the abutting rod portions 51, the cross-sectional diameter of the abutting rod portions 51 is greater than that of the clearance rod portions 52, the length of the abutting rod portions 51 is much shorter than that of the clearance rod portions 52, and an eccentric table 53 is arranged between two adjacent abutting rod portions 51, the double-head side screw 5 is directly connected with each object portion by the abutting rod portions 51, the contact area of the rod and the shell is reduced, the installation difficulty is reduced, the installation of the rod is facilitated, and the eccentric table 53 can avoid the rotation and lifting locking effect of the double-head side screw 5.

[0025] The hexagonal long screw 6 comprises a hexagonal table portion 61, a long screw portion 62 and a connecting rod portion 63 arranged close to the hexagonal table portion 61, the cross-sectional diameter of the connecting rod portion 63 is greater than that of the long screw portion 62 and the length of the connecting rod portion 63 is much shorter, the connecting rod portion 63 is arranged in the shell to abut against the shell, so as to reduce the contact area of the rod and the shell, reduce the installation difficulty and facilitate the installation of the rod.

[0026] The middle short screw 4, the double-head side screw 5 and the hexagonal long screw 6 are all made of alloy steel, so that the screws are more corrosion-resistant and wear-resistant, have better high-temperature and high-pressure performance and can better cope with harsh working environments.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A novel connection structure of a rock drill housing, comprising a housing body including a front housing, a middle housing and a rear housing, characterized in that: The shell body is provided with screw connection assemblies, which include a middle short screw, two double-head side screws on both sides and two hexagonal long screws at the bottom.

2. A novel connection structure of a rock drill housing according to claim 1, characterized in that: The front shell is provided with a middle hole, and the middle shell is provided with a middle locking platform.

3. A novel connection structure of a rock drill housing according to claim 1, characterized in that: The front shell, the middle shell and the rear shell are all provided with side through holes, the front shell is provided with a locking nut, one end of the double-head side screw is fixedly connected with the locking nut, and the other end penetrates out of the rear shell and is exposed outside.

4. A novel connection structure of a rock drill housing according to claim 1, characterized in that: The middle shell and the rear shell are both provided with mounting holes for locking the hexagonal long screws.

5. A novel connection structure of a rock drill housing according to claim 3, characterized in that: The double-head side screw includes at least three abutting rod portions and clearance rod portions arranged between the abutting rod portions, the cross-sectional diameter of the abutting rod portion is larger than that of the clearance rod portion, the length of the abutting rod portion is shorter than that of the clearance rod portion, and an eccentric platform is arranged between adjacent two abutting rod portions.

6. A novel connection structure of a rock drill housing according to claim 4, characterized in that: The hexagonal long screw includes a hexagonal platform portion, a long screw portion and a connecting rod portion arranged close to the hexagonal platform portion, and the cross-sectional diameter of the connecting rod portion is larger than that of the long screw portion.

7. A novel connection structure of a rock drill housing according to any one of claims 1 to 6, characterized in that: The middle short screw, the double-head side screw and the hexagonal long screw are all made of alloy steel.

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