Cutting pick for mine mining machine

Abstract

The utility model relates to the technical field of cutting picks, and particularly discloses a cutting pick for a mine mining machine, which comprises a cutting pick body, a mounting groove is arranged at the top of the upper end of the cutting pick body, a tool bit is arranged in the mounting groove, and a wear-resistant sleeve is arranged between the connection parts of the tool bit and the cutting pick body; a connecting part is further arranged on the upper portion of the cutting pick body, a protective shell is detachably arranged on the connecting part, and the protective shell is connected with the connecting part in a matched mode through a clamping structure. Connection is achieved through the clamping structure of the protection shell and the cutting pick body, the cutting head can be protected against collision damage in the transportation and storage process, a separated protection piece can be replaced in the installation and knocking process, operation is simplified, the cutting head is prevented from being damaged, the cutting pick can be recycled and reused, cost is reduced, the abrasion resistance of the connecting edge of the cutting head and the cutting pick body is enhanced through the abrasion-resistant sleeve, and the service life of the cutting pick is prolonged. And the connecting hole is formed in the bottom to be matched with the rod-shaped structure, so that the cutting pick is convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pick, concretely relates to a pick for mine excavating machine. BACKGROUND

[0002] In the core link of mine excavating operation, the pick plays a vital role. As the core component on the excavating machine (such as heading machine, coal winning machine, milling machine, etc.) directly contacting with hard rock or coal seam and performing the crushing task, the rationality of its structure design and the stability of its performance, deeply affect the efficiency of the whole excavating system, the operation cost and the safety of equipment operation. The pick mainly breaks the material through the hard alloy cutter head at its front end in a high impact and strong cutting way, and at the same time, it is accurately assembled and locked in the tooth seat by its tail handle or special structure, to ensure that the huge impact force, cutting force and vibration in the violent operation process can be effectively transmitted to the machine structure. Therefore, the pick is not only the key executive element to realize the efficient crushing function, but also the key vulnerable part with huge consumption and frequent replacement in the mine excavating equipment, and its performance directly determines the production capacity and economy of the equipment.

[0003] However, the current widely used pick design generally has some pain points affecting its whole life cycle management. The most prominent defect is the lack of special protection structure for the cutter head (especially the hard alloy head), which leads to the fact that the cutter head is easily cracked, broken or micro-cracked due to accidental collision or stacking extrusion during transportation, storage or transfer between workstations, which not only causes direct economic loss, but also hides safety hazards for subsequent use. In addition, in the installation link, some site operators habitually use hammer and other tools to directly knock the cutter head to forcibly install the pick into the tooth seat for the sake of convenience. This non-standard operation is easy to cause irreversible damage to the precise hard alloy head, significantly shortening its service life. At the same time, when the worn pick needs to be replaced, if there is no special pick puller tool, the disassembly process will become extremely cumbersome and difficult, and workers often need to spend a lot of time and effort to pry, break and other operations, which not only greatly reduces the equipment maintenance efficiency and prolongs the downtime, but also may cause damage to the tooth seat and even the machine body, further increasing the maintenance cost and operation risk.

[0004] Based on this, the utility model provides a pick for mine excavating machine to solve the problems existing in the prior art. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model discloses a main purpose at providing a kind of pick for mine excavator, to solve the current pick lacks special tool bit protection structure, transport, store when tool bit is easily damaged due to collision, bring inconvenience, during installation, part of worker is directly knocked tool bit to install pick into tooth holder for the sake of convenience, it is easy to cause tool bit damage, and if there is no special tooth extractor when disassembling, operation is very cumbersome and difficult, affect maintenance efficiency Problem.

[0006] To achieve the above object, the technical scheme of the utility model is as follows:

[0007] A kind of pick for mine excavator, including pick body, the installation slot is set in the top of pick body, the tool bit is arranged in the installation slot, wear-resistant sleeve is arranged between the connecting part of tool bit and pick body;The upper portion of pick body is further provided with connecting part, the protective shell is detachably arranged on the connecting part, and the protective shell is connected with the connecting part by clamping structure.

[0008] In a preferred embodiment, the lower portion of the pick body is provided with an assembly portion, which is a columnar structure adapted to the tooth holder connecting hole.

[0009] In a preferred embodiment, an axial direction is further provided with a connecting hole at the bottom of the assembly portion, and the connecting hole is coaxially arranged with the pick body.

[0010] In a preferred embodiment, the pick body is further provided with a groove, and the groove is arranged on the outer circumferential surface of the root portion of the pick body.

[0011] In a preferred embodiment, the wear-resistant sleeve covers the connecting edge of the tool bit and the pick body, and the wear-resistant sleeve is fixedly connected with the tool bit and the pick body, respectively.

[0012] In a preferred embodiment, the connecting portion is arranged on the side of the pick body close to the tool bit, and an axially extending connecting groove and an annular clamping groove are arranged on the connecting portion.

[0013] In a preferred embodiment, the clamping groove is coaxially arranged with the pick body, and one end of the connecting groove is in communication with the clamping groove.

[0014] In a preferred embodiment, the protective shell is a cylindrical structure with an open end, and a clamping block is arranged on the inner side of the protective shell, and the clamping block is adapted to the connecting groove.

[0015] In a preferred embodiment, the clamping block is slidably connected with the clamping groove.

[0016] In a preferred embodiment, the tool bit is fixedly arranged in the installation slot.

[0017] Compared with the prior art, the utility model provides a pick for mine excavating machine has the following beneficial effects:

[0018] 1. Through the clamping structure connection of protection shell and pick body, and the action in the outside of cutter head, make can reliably protect cutter head to avoid collision damage in transportation, storage, can replace the separate protection piece in the process of installation knock, simplified operation and can prevent cutter head damage, and can be recycled, reduce the use cost.

[0019] 2. Through the setting of wear -resisting cover, the wear resistance of cutter head and pick body connecting edge is strengthened, the operation wear is reduced, and the service life of pick is prolonged.

[0020] 3. Through the setting of the connecting hole of bottom cooperation rod -like structure and groove adapts special tooth extractor, realize the convenient disassembly of pick, solve the problem that the current pick lacks special cutter head protection structure, cutter head is easy to be damaged due to collision in transportation, storage, bring inconvenience, in the installation process, part of workers directly knock cutter head to install pick into tooth seat for the convenience, easy to cause cutter head damage, and if there is no special tooth extractor when disassembling, the operation is very cumbersome and difficult, affect the maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed in the embodiment or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor.

[0022] Figure 1 It is the three-dimensional drawing for the pick of the utility model for mine excavating machine;

[0023] Figure 2 It is the exploded view of the pick of the utility model for mine excavating machine;

[0024] Figure 3 It is the sectional view of the pick of the utility model for mine excavating machine;

[0025] Figure 4 It is the installation schematic drawing of the pick of the utility model for mine excavating machine;

[0026] Figure 5 It is the pick of the utility model for mine excavating machine Figure 4 The local enlarged view of A in the middle.

[0027]

MAIN COMPONENT SYMBOL EXPLANATION

[0028] 1, tooth body; 101, assembly part; 102, groove; 103, connecting part; 104, mounting groove; 105, connecting groove; 106, clamping groove; 107, connecting hole; 2, cutter head; 3, wear sleeve; 4, protective shell; 401, clamping block. DETAILED DESCRIPTION

[0029] The structure of the tooth for the mine excavating machine is further described in detail below in combination with the drawings and the embodiments of the present application.

[0030] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflicts. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] It should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments of the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or their combinations.

[0032] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units listed, but can include other steps or units not listed or inherent to these processes, methods, products or devices.

[0033] For purposes of the description hereinafter, spatial relative terms, such as "on", "above", "at", "below", "upper", "lower", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device described herein is inverted from the orientation depicted in the figures, elements described as "above", "at", or "below" other elements or features would then be oriented "below", "at", or "above" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation that is above and below. The devices can be otherwise oriented (rotated at 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Generally, spatially relative terms are intended to include different orientations of a device in use or operation, such as dependent on the particular orientation in use or operation of the device.

[0034] As shown in the accompanying drawings for Figures 1-5 The utility model provides a technical scheme:

[0035] A pick for mine excavating machine, including pick body 1, the upper end top of pick body 1 is equipped with installation slot 104, hard alloy cutter head 2 is fixedly installed in installation slot 104, wear sleeve 3 is arranged between the connecting part of cutter head 2 and pick body 1, and wear sleeve 3 is used to enhance the friction between the contact surface of both and significantly strengthen the wear resistance of the connecting edge area to resist the wear in operation, the upper portion of pick body 1 is further provided with connecting part 103, and protective shell 4 is detachably installed on connecting part 103, and protective shell 4 is connected with connecting part 103 through clamping structure and is used to provide effective protection for fragile cutter head 2 in non-operation state (such as transportation, storage).

[0036] In a preferred embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 In order to facilitate the installation and disassembly of pick and tooth seat, assembly part 101 is arranged on the lower part of pick body 1 and is used in cooperation with tooth seat connecting hole, and connecting hole 107 is formed in the bottom of assembly part 101 to facilitate the insertion of rod-shaped structure through connecting hole 107 during disassembly, and the disassembly of pick body 1 is facilitated by knocking rod-shaped interface.

[0037] In a preferred embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 Groove 102 is further arranged on pick body 1, which provides a convenient point for the clamping or force application of tools, simplifies the disassembly process of pick, improves the maintenance efficiency and protects cutter head 2 from damage caused by improper operation.

[0038] In a preferred embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the assembly part 101 is a columnar structure matched with the tooth holder connecting hole, the connecting hole 107 is axially arranged at the bottom of the assembly part 101, and the connecting hole 107 is coaxially arranged with the tooth holder 1, which facilitates the coaxiality of the assembly part 101 with the tooth holder connecting hole during installation and ensures the accuracy during installation.

[0039] In a preferred embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 1 , the mounting groove 104 is arranged at the head end surface of the tooth holder 1, and the cutter head 2 is fixed in the mounting groove 104 by welding; the wear-resistant sleeve 3 covers the connecting edge between the cutter head 2 and the tooth holder 1, and the wear-resistant sleeve 3 is fixedly connected with the cutter head 2 and the tooth holder 1 respectively by welding, which enhances the connection strength between the cutter head 2 and the tooth holder 1 and reduces the wear of the connecting edge between the cutter head 2 and the tooth holder 1. The provision of the mounting groove 104 provides a mounting and positioning basis for the cutter head 2, and welding fixation enhances the connection strength of the cutter head 2.

[0040] In a preferred embodiment, as shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 1 , the connecting part 103 is arranged on the side of the tooth holder 1 close to the cutter head 2, and the axially extending connecting groove 105 and the annular clamping groove 106 are arranged on the connecting part 103, the clamping groove 106 is coaxially arranged with the tooth holder 1, and one end of the connecting groove 105 communicates with the clamping groove 106. The provision of the connecting groove 105 provides an insertion path for the clamping block 401 of the protective shell 4 during installation, and the annular clamping groove 106 is used to facilitate the rotation of the clamping block 401 after clamping to achieve circumferential fixation of the protective shell 4.

[0041] In a preferred embodiment, as shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 1 , the protective shell 4 is a cylindrical structure with one end open, and the inner side wall of the protective shell 4 is provided with a clamping block 401 matched with the connecting groove 105, and the clamping block 401 can enter the clamping groove 106 through the connecting groove 105 and be clamped and matched with the clamping groove 106. Through the cooperation of the clamping block 401, the connecting groove 105 and the clamping groove 106, the quick disassembly and assembly of the protective shell 4 and the stable protection of the cutter head 2 are achieved.

[0042] In a preferred embodiment, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 Figure 1 Figure 2 Figure 3 Figure 4 described, the groove 102 is opened in the root of the cutting tooth body 1. By the outer peripheral groove 102, the special tooth puller is provided with a force application fulcrum, and the cutting tooth is assisted to disassemble.

[0043] The implementation principle of the cutting tooth for the mine mining machine is as follows:

[0044] The assembly part 101 of the lower half part of the cutting tooth body is a structure matched with the tooth seat connecting hole, the head part of the cutting tooth body is provided with a mounting groove 104, the cutter head 2 is fixed in the mounting groove 104 by welding, the wear-resistant sleeve 3 is welded at the connecting edge of the cutter head 2 and the cutting tooth body, the wear resistance of the connecting part is further strengthened, the wear and tear during operation is reduced, the connecting part 103 is arranged on the cutting tooth body, the connecting groove 105 and the annular clamping groove 106 are arranged on the connecting part 103, the clamping block 401 on the inner side of the protective shell 4 can be inserted along the connecting groove 105, then the clamping block 401 is clamped into the clamping groove 106 by rotating, so that the protective shell 4 is fixed on the connecting part 103, in the non-operation state such as transportation and storage, the cutter head 2 can be completely covered by the protective shell 4, external collision is avoided to cause damage of the cutter head 2, the protective shell 4 can be recycled and reused, and the cost is reduced; when the cutting tooth is installed, the cutting tooth needs to be knocked into the tooth seat, direct knocking is easy to damage the cutter head 2, the protective shell 4 can be sleeved on the cutter head 2 as a protective structure at this time, the traditional separate protective object is replaced, a separate protective piece does not need to be held by hand, the protective shell 4 can be directly knocked to realize installation, the cutter head 2 is prevented from being damaged in the installation process, after the installation is completed, the clamping block 401 is aligned with the connecting groove 105 only by rotating the protective shell 4, so that the protective shell 4 can be pulled out. The rod-shaped structure is inserted into the connecting hole 107 from the tail part of the tooth seat, the cutting tooth can be disassembled from the tooth seat by knocking the rod-shaped structure; the groove 102 on the cutting tooth body is designed for assisting disassembly, the cutting tooth can be taken out by the groove 102 and the special tooth puller, and the convenience of disassembly is improved.

[0045] The above is only a preferred embodiment of the utility model, and is not used to limit the protection scope of the utility model.

Claims

1. A pick for a mine extraction machine, characterized in that, The utility model provides a cutting tooth body (1) upper end top is equipped with the installation groove (104), the cutting tooth body (1) is equipped with the cutter head (2) in the installation groove (104), the cutter head (2) and the connecting part between cutting tooth body (1) are equipped with wear -resisting cover (3), the cutting tooth body (1) upper part is equipped with the connecting part (103) still, the connecting part (103) is detachably equipped with protective shell (4), and the protective shell (4) is connected with the connecting part (103) through the cooperation of the joint structure.

2. A pick for a mining excavation machine as claimed in claim 1, characterised in that, The lower part of the cutting tooth body (1) is provided with an assembly part (101) which is a columnar structure matched with the tooth seat connecting hole.

3. A pick for a mining excavation machine as claimed in claim 2, characterised in that, The bottom of the assembly part (101) is also provided with a connecting hole (107) in the axial direction, and the connecting hole (107) is coaxially arranged with the cutting tooth body (1).

4. A pick for a mining excavation machine as defined in claim 1, wherein, The cutting tooth body (1) is also provided with a groove (102) which is arranged on the outer circumferential surface of the root part of the cutting tooth body (1).

5. A pick for a mining excavation machine as defined in claim 1, wherein, The wear-resistant sleeve (3) covers the connecting edge between the cutter head (2) and the cutting tooth body (1), and the wear-resistant sleeve (3) is fixedly connected with the cutter head (2) and the cutting tooth body (1) respectively.

6. A pick for a mining excavation machine as defined in claim 1, wherein, The connecting part (103) is arranged on the side of the cutting tooth body (1) close to the cutter head (2), and an axially extending connecting groove (105) and an annular clamping groove (106) are arranged on the connecting part (103).

7. A pick for a mining excavation machine as claimed in claim 6 wherein, The clamping groove (106) is coaxially arranged with the cutting tooth body (1), and one end of the connecting groove (105) communicates with the clamping groove (106).

8. A pick for a mining excavation machine as defined in claim 6, wherein, The protective shell (4) is a cylindrical structure with an open end, and a clamping block (401) is arranged on the inner side of the protective shell (4), which is matched with the connecting groove (105).

9. A pick for a mining excavation machine as claimed in claim 8, characterised in that, The clamping block (401) is slidably connected with the clamping groove (106).

10. A pick for a mining excavation machine as defined in claim 1, wherein, The cutter head (2) is fixedly arranged in the installation groove (104).

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