Dustproof drill rod of hydraulic breaking hammer

Abstract

The dustproof drill rod of the hydraulic breaking hammer comprises a drill rod body, a dustproof cover and an outer sleeve, a front protruding block and a rear protruding block are arranged in the middle of the drill rod body, a middle groove is formed between the front protruding block and the rear protruding block, a through hole, a clamping groove and an inner expanding groove are sequentially formed in the dustproof cover from left to right, the drill rod body penetrates through the through hole of the dustproof cover, and the outer sleeve is sleeved with the clamping groove. The through hole is matched with the middle groove, the rear protruding block is matched with the clamping groove, the outer sleeve is inserted into the drill rod, the front end of the outer sleeve is arranged in the inner expanding groove, and a certain distance is formed between the front end of the outer sleeve and the rear protruding block. The dust-proof device can completely cover the outer sleeve, is very remarkable in dust-proof effect, can prevent dust from directly impacting the outer sleeve, reduces dust entering the front cylinder body, reduces the probability of black oil, avoids cylinder scoring, and prolongs the service life of hydraulic oil and the hydraulic breaking hammer; consumption of the outer sleeve caused by friction between the outer sleeve and the rear protruding block and the dustproof cover can be avoided, and therefore the service life of the outer sleeve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic breaking hammer technical field, concretely is a dust buster of hydraulic breaking hammer. BACKGROUND

[0002] Figure 1 The ordinary drill rod of the hydraulic breaking hammer is shown. The drill rod is located at the lowermost end of the hydraulic breaking hammer, and its lower end directly contacts the broken object, and its upper end contacts the piston and the inner sleeve. When the hydraulic breaking hammer is working normally, the piston strikes the drill rod, and the drill rod transmits the force to the broken object to achieve the effect of breaking the broken object. In actual work, the broken object is often rock, and the lime produced after the rock is crushed will gather at the lower end of the drill rod. At this time, the drill rod collides with the broken object, and part of the collision energy will be absorbed by the lime. After the lime absorbs the collision energy, it will recoil upward along the outer surface and eventually be sprayed on the outer sleeve.

[0003] In some special working conditions, such as when the hydraulic breaking hammer is applied to demolition and tunnel work, the hydraulic breaking hammer often needs to be struck upward. At this time, the lime and stone powder produced by rock breaking will directly fall onto the outer sleeve due to gravity, and a thick layer of dust will accumulate on the outer sleeve.

[0004] These dusts will enter the front cylinder body through the contact gap between the front cylinder body and the drill rod, and part of the dusts will enter the middle cylinder body through the front cylinder body. On the one hand, the dusts will contaminate the hydraulic oil, leading to the phenomenon of black oil, and on the other hand, the dusts and the piston and the middle cylinder body will rub, leading to the hydraulic breaking hammer being pulled, affecting the normal work of the hydraulic breaking hammer. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a dust buster of hydraulic breaking hammer, which is provided with a dust cover, an inner expansion groove is arranged on the dust cover, a dust prevention surrounding area is formed between the inner expansion groove and the outer shell of the front cylinder body, and the outer sleeve can be completely covered. This design has very obvious dust prevention effect, can avoid the dust directly impacting the outer sleeve, reduce the dust entering the front cylinder body, reduce the probability of the occurrence of black oil phenomenon, avoid the hydraulic breaking hammer being pulled, increase the service life of the hydraulic oil and the hydraulic breaking hammer, and can also avoid the friction between the outer sleeve and the rear protrusion and the dust cover, thereby improving the service life of the outer sleeve.

[0006] To achieve the above object, the utility model provides the following technical scheme: A dustproof drill rod of hydraulic breaking hammer, including drill rod, dust cover, sheath, the middle part of drill rod is equipped with front lug and rear lug, is equipped with middle groove between front lug and rear lug, the external structure of dust cover is circular table type, it is hollow in the inside, and inside is equipped with hole, clamping groove, inner expansion groove from left to right in proper order, drill rod passes the hole of dust cover, makes hole and middle groove cooperate, rear lug and clamping groove cooperate, the sheath is inserted into drill rod, and the front end of sheath is placed in inner expansion groove, and is equipped with a certain distance between the front end of sheath and rear lug.

[0007] Further preferably, it further comprises an inner sleeve, which is arranged at the rear end of the drill rod.

[0008] Further preferably, the drill rod and the front cylinder body are provided with an outer sleeve and an inner sleeve.

[0009] Further preferably, the rear lug and the drill rod are detachably connected.

[0010] Further preferably, the inner diameters of the front lug and the rear lug are greater than the inner diameter of the middle groove.

[0011] Further preferably, the inner end surface of the inner expansion groove and the front end of the outer sleeve are provided with a certain distance.

[0012] Further preferably, the opening of the dust cover faces the rear end of the drill rod.

[0013] Further preferably, the front lug and the middle groove are integrally formed, the middle groove is inserted into the hole of the dust cover, the rear lug placed in the clamping groove is detachably mounted and fixed with the middle groove, the front lug, the middle groove and the middle groove jointly form a protrusion groove, and the drill rod penetrates through the protrusion groove and is fixed.

[0014] Further preferably, the front lug and the rear lug are inserted into the drill rod in interference fit, and the middle groove is jointly formed by the front lug, the drill rod and the rear lug.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The dust cover is in the structure of a circular table, and the opening of the arc structure faces the rear end of the drill rod. When dust comes up along the drill rod or falls onto the dust cover, it reaches the arc structure and disperses around, avoiding direct impact of the dust on the sheath and achieving the effect of dust prevention. The dust entering the front cylinder body is reduced, the probability of black oil phenomenon is reduced, the occurrence of cylinder pulling is avoided, and the service life of the hydraulic oil and the hydraulic breaking hammer is increased.

[0017] 2、The front end of the outer cover is provided with a certain distance from the rear protruding block and the dust cover, so that the rear protruding block and the dust cover are not in contact with the outer cover, thereby avoiding friction between the outer cover and the rear protruding block and the dust cover, reducing consumption of the outer cover, and prolonging the service life of the outer cover.

[0018] 3、The inner circle diameter of the front protruding block and the rear protruding block is larger than the inner circle diameter of the middle groove, so that the dust cover can be fixed more firmly and prevent the dust cover from falling off.

[0019] 4、The inner expansion groove is arranged on the dust cover, and a dustproof surrounding area is formed between the inner expansion groove and the outer shell of the front cylinder body, so that the outer cover can be completely covered, the dustproof effect is very obvious, direct impact of dust on the outer cover can be avoided, dust entering the inside of the front cylinder body is reduced, the probability of black oil phenomenon is reduced, and the service life of the hydraulic oil and the hydraulic breaking hammer is prolonged.

[0020] 5、The utility model discloses a very low manufacturing cost, and the application range is very wide, can be popularized in a large scale, and the dustproof effect is very good.

[0021] Additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the drill rod structure in the prior art;

[0023] Figure 2 It is a schematic diagram of the dustproof drill rod structure of the hydraulic breaking hammer of the present utility model;

[0024] Figure 3 It is a schematic diagram of the dustproof drill rod structure of the hydraulic breaking hammer of the present utility model;

[0025] Figure 4 It is a schematic diagram of the drill rod structure of the present utility model;

[0026] Figure 5 It is a schematic diagram of the dust cover structure of the present utility model;

[0027] Figure 6 It is a schematic diagram of the dust cover internal structure of the present utility model;

[0028] Figure 7 It is a schematic diagram of the installation of the present utility model and the outer cover;

[0029] Figure 8 It is a schematic diagram of the installation of the present utility model and the outer cover and the inner cover;

[0030] Figure 9 It is a schematic diagram of the installation of the present utility model and the front cylinder body.

[0031] Among them, 1. chisel; 101. front protrusion; 102. middle groove; 103. rear protrusion; 2. dust cover; 201. through hole; 202. slot; 203. inner expansion groove; 3. front cylinder block; 4. outer sleeve; 5. inner sleeve. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Example 1

[0035] To address the aforementioned problems, this utility model provides a technical solution: a dustproof chisel rod for a hydraulic breaker, such as... Figures 2-9 As shown, the device includes a drill rod 1, a dust cover 2, an outer sleeve 4, and an inner sleeve 5. The drill rod 1 has a front protrusion 101 and a rear protrusion 103 in the middle. A central groove 102 is provided between the front protrusion 101 and the rear protrusion 103. The external structure of the dust cover 2 is frustum-shaped and hollow inside. From left to right, the dust cover 2 has a through hole 201, a slot 202, and an inner expansion groove 203. The drill rod 1 passes through the through hole 201 of the dust cover 2, so that the through hole 201 and the central groove 102 are engaged. The rear protrusion 103 and the slot 202 are engaged. The outer sleeve 4 is inserted into the drill rod 1, and the front end of the outer sleeve 4 is placed in the inner expansion groove 203. There is a certain distance between the front end of the outer sleeve 4 and the rear protrusion 103. The rear protrusion 103 and the drill rod 1 are detachably connected. The inner sleeve 5 is located at the rear end of the drill rod 1.

[0036] Working principle: in use, first, the rear protrusion 103 is disassembled from the drill rod 1, then the drill rod 1 is inserted into the through hole 201 of the dust cover 2, the through hole 201 is arranged in the middle groove 102, then the rear protrusion 103 is inserted and installed, the rear protrusion 103 is arranged in the clamping groove 202, the dust cover 2 and the drill rod 1 are fixed, then the outer sleeve 4 is inserted, the front end of the outer sleeve 4 is arranged in the inner expansion groove 203, and a certain distance is arranged between the front end of the outer sleeve 4 and the rear protrusion 103, so that the rear protrusion 103 does not contact the outer sleeve 4, so that the abrasion of the outer sleeve 4 caused by the friction between the outer sleeve 4 and the rear protrusion 103 of the drill rod 1 can be avoided, finally, the inner sleeve 5 is installed at the rear end of the drill rod 1, then the front cylinder body 3 is installed, and the outer sleeve 4 and the inner sleeve 5 are arranged between the drill rod 1 and the front cylinder body 3.

[0037] The dust cover 2 is a circular table structure, and the opening of the arc structure faces the rear end of the drill rod 1. The structure design is that when dust flows up along the drill rod 1 or falls on the dust cover 2, the dust reaches the arc structure and is dispersed in all directions along the arc structure, so that the dust directly impacts the outer sleeve 4, the dust entering the inside of the front cylinder body 3 is reduced, the probability of black oil phenomenon is reduced, the cylinder is avoided, and the service life of the hydraulic oil and the hydraulic breaking hammer is increased.

[0038] In order to fix the drill rod 1 and the dust cover 2 firmly, the inner circle diameter of the front protrusion 101 and the rear protrusion 103 is greater than the inner circle diameter of the middle groove 102.

[0039] The inner end surface of the inner expansion groove 203 and the front end of the outer sleeve 4 are arranged at a certain distance, so that the abrasion of the outer sleeve 4 caused by the friction between the outer sleeve 4 and the dust cover 2 is avoided, and the service life of the outer sleeve 4 is improved.

[0040] Embodiment 2

[0041] The difference between the embodiment and the embodiment 1 is that the front protrusion and the middle groove are integrally formed, the rear protrusion is detachably installed on the middle groove, and the front protrusion, the middle groove and the rear protrusion jointly form a protrusion groove; in use, the middle groove is inserted into the through hole of the dust cover, then the rear protrusion is detachably installed on the middle groove, the dust cover and the protrusion groove are fixed as a whole, and finally the drill rod is inserted into the protrusion groove, so that the drill rod and the protrusion groove are in interference fit.

[0042] The advantage of the design is that the protrusion groove as a whole can be used with the common drill rod, the drill rod itself does not need to be changed, the cost can be greatly reduced, and the application range is very wide.

[0043] Embodiment 3

[0044] The difference between the embodiment and the embodiment 1 is that the front protrusion and the rear protrusion can be inserted into the drill rod in interference fit, and the middle groove is jointly formed by the front protrusion, the drill rod and the rear protrusion, wherein the drill rod can be a common drill rod.

[0045] The advantage of this design is that the front and rear protrusions can be used with common drill rods without the need to modify the drill rods themselves, which greatly reduces costs and has a very wide range of applications.

[0046] It should be noted that the fixed manner of interference fit mentioned above is only for better explanation and illustration of the principle, and other fixing manners can also be used.

[0047] In the description of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0048] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A dust protection drill rod for a hydraulic breaking hammer, characterized in that, It includes drill rod (1), dust cover (2), cover (4), the middle part of drill rod (1) is equipped with front protruding block (101) and rear protruding block (103), front protruding block (101) and rear protruding block (103) are equipped with middle recess (102), the external structure of dust cover (2) is circular table type, its inside is hollow, and inside is equipped with through hole (201), clamping groove (202), inner expansion groove (203) from left to right in sequence, drill rod (1) passes through the through hole (201) of dust cover (2), makes through hole (201) and middle recess (102) cooperate, rear protruding block (103) and clamping groove (202) cooperate, cover (4) is inserted into drill rod (1), and the front end of cover (4) is placed in inner expansion groove (203), a certain distance is equipped between the front end of cover (4) and rear protruding block (103).

2. A dusted drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: It also includes inner sleeve (5), and the inner sleeve (5) is arranged at the rear end of drill rod (1).

3. A dusted drill rod for a hydraulic breaking hammer according to claim 2, characterized in that: Drill rod (1) and front cylinder body (3) are equipped with cover (4) and inner sleeve (5).

4. The dust-free drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: Rear protruding block (103) and drill rod (1) are detachably connected.

5. The dust-free drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: The inner diameter of front protruding block (101) and rear protruding block (103) is greater than the inner diameter of middle recess (102).

6. The dust-free drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: The inner end face of inner expansion groove (203) and the front end of cover (4) are equipped with a certain distance.

7. The dust-free drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: The opening of dust cover (2) is towards the rear end of drill rod (1).

8. The dust-free drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: Front protruding block (101) and middle recess (102) are integrally formed, middle recess (102) is inserted into the through hole (201) of dust cover (2), rear protruding block (103) placed in clamping groove (202) and middle recess (102) can be detachably installed and fixed, front protruding block (101), middle recess (102) and middle recess (102) jointly form protruding groove, and drill rod (1) penetrates protruding groove and is fixed.

9. The dust-free drill rod for a hydraulic breaking hammer according to claim 1, characterized in that: Front protruding block (101) and rear protruding block (103) are inserted into drill rod (1) by interference fit, and middle recess (102) is jointly formed by front protruding block (101), drill rod (1) and rear protruding block (103).

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