Stepped tool shaft for hydraulic support structural member

Abstract

The utility model relates to a stepped tool shaft for a hydraulic support structural member. The stepped tool shaft comprises a first shaft head, a second shaft head and a middle connecting shaft. A first inner hole is formed in the first shaft head in the axial direction, a second inner hole is formed in the second shaft head in the axial direction, and first threads are arranged on the inner side wall of the first inner hole and the inner side wall of the second inner hole. The middle connecting shaft is provided with a first connecting shaft and a second connecting shaft which are connected with each other, second threads are arranged on the circumferential surfaces of the first connecting shaft and the second connecting shaft, the second threads on the first connecting shaft are screwed with the first threads in the first shaft head, and the second threads on the second connecting shaft are screwed with the first threads in the second shaft head; the first shaft head and the second shaft head can be inserted into inner holes of two parts of the hydraulic support structural part in a one-to-one correspondence mode, and therefore center coaxial positioning is conducted on the inner holes of the two parts. According to the stepped tool shaft, the first shaft head and the second shaft head with corresponding outer diameters can be selected according to the positioning size of a product, so that the positioning requirements of various hole sizes are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic support structural member manufacturing frock technical field especially relates to a kind of ladder frock shaft for hydraulic support structural member. BACKGROUND

[0002] Coal mine hydraulic support structural member product belongs to small batch when producing, custom production. Coal mine hydraulic support structural member includes some hydraulic valve plate assembly parts, these parts require hole concentricity, however, due to multiple parts, hole size specification is also more, so hole positioning size is not unique when assembling, causing low positioning accuracy, so it needs ladder frock shaft of special size when assembling to ensure positioning accuracy.

[0003] Referring to Figure 1 The existing ladder frock shaft for hydraulic support structural member includes integrally formed first shaft section 1 and second shaft section 2, and the diameter of the first shaft section 1 is smaller than the diameter of the second shaft section 2. The defects and deficiencies of the ladder frock shaft are: (1) the size of the first shaft section 1 and the second shaft section 2 of the ladder frock shaft is fixed, which belongs to disposable frock, so its utilization rate is not high, and its raw material processing cost is high; (2) if the hole size of the hydraulic support structural member changes, the ladder frock shaft for positioning cannot be used.

[0004] Therefore, it is urgent to provide a ladder frock shaft for hydraulic support structural member, which can adjust the diameter and length and has wide application range. SUMMARY

[0005] (I) Technical problem to be solved

[0006] In view of the above-mentioned defects and deficiencies of the prior art, the utility model provides a ladder frock shaft for hydraulic support structural member, which solves the technical problems of high manufacturing cost and narrow application range of the existing ladder frock shaft.

[0007] (II) Technical scheme

[0008] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model includes:

[0009] The utility model embodiment provides a ladder frock shaft for hydraulic support structural member, which comprises a first shaft head, a second shaft head and an intermediate connecting shaft.

[0010] The first shaft head is provided with a first inner hole in the axial direction, and the second shaft head is provided with a second inner hole in the axial direction. The inner side wall of the first inner hole and the second inner hole is provided with a first thread.

[0011] The intermediate connecting shaft has a first connecting shaft and a second connecting shaft connected to each other, and the circumferential surface of the first connecting shaft and the circumferential surface of the second connecting shaft are both provided with second threads, the second threads on the first connecting shaft are screwed with the first threads in the first shaft head, the second threads on the second connecting shaft are screwed with the first threads in the second shaft head, and the first shaft head and the second shaft head can be inserted into the inner holes of the two parts of the hydraulic support structure one by one, so as to center and coaxially position the inner holes of the two parts.

[0012] Optionally, the first threads in the first inner hole and the second inner hole, and the second threads on the first connecting shaft and the second connecting shaft are all trapezoidal threads.

[0013] Optionally, the connecting part of the first connecting shaft and the second connecting shaft is provided with a groove in the circumferential direction, the side wall of the groove forms a clamping part, and the clamping part is used for clamping by a clamping tool.

[0014] Optionally, the outer diameter size of the first shaft head is 30-60mm.

[0015] Optionally, the outer diameter size of the second shaft head is greater than or equal to 62mm.

[0016] Optionally, the outer diameter size of the intermediate connecting shaft is 14-18mm.

[0017] Optionally, the length size of the intermediate connecting shaft is 150-600mm.

[0018] Optionally, the length size of the groove of the intermediate connecting shaft in the axial direction is 10-20mm.

[0019] (Three) beneficial effects

[0020] The utility model discloses a beneficial effect is: the utility model discloses a be used for hydraulic support structural member's ladder frock axle, because including first axle head, second axle head and intermediate connecting axle, first axle head has seted up first inner hole along the axial direction, second axle head has seted up second inner hole along the axial direction, and the inner side wall of first inner hole and second inner hole all is provided with first screw thread, intermediate connecting axle has the first connecting axle and the second connecting axle of each other's connection, and the circumferential surface of first connecting axle and second connecting axle all is provided with second screw thread, and the second screw thread on first connecting axle is combined with the first screw thread in first axle head, and the second screw thread on second connecting axle is combined with the first screw thread in second axle head, and first axle head and second axle head can be inserted into the inner hole of two parts of hydraulic support structural member one by one, thereby the inner hole of two parts is positioned coaxially. Compared with the prior art, first, it adopts the first axle head and second axle head of reusable, multiple sizes, and utilizes the assembly of intermediate connecting axle, so it is strong in universality, can satisfy the positioning demand of various inner hole sizes in hydraulic support structural member, second, it can adjust the length of ladder frock axle through the screw structure between first axle head, second axle head and intermediate connecting axle, which realizes the positioning of different positions, third, first axle head, second axle head and intermediate connecting axle, simple structure, convenient assembly, finally, first axle head, second axle head and intermediate connecting axle, reusable, which reduces the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is structural schematic diagram of the prior art for hydraulic support structural member's ladder frock axle embodiment 1;

[0022] Figure 2 It is the main view schematic diagram of the utility model for hydraulic support structural member's ladder frock axle embodiment 1, wherein, ladder frock axle includes first axle head, second axle head and intermediate connecting axle;

[0023] Figure 3 It is the section view schematic diagram of the utility model's first axle head and second axle head embodiment 1;

[0024] Figure 4 It is the main view schematic diagram of the utility model's intermediate connecting axle embodiment 1;

[0025] Figure 5 It is Figure 4 The partial section view of intermediate connecting axle in the outer wall surface of among;

[0026] Figure 6 It is Figure 4 The section view schematic diagram of intermediate connecting axle in A-A among.

[0027]

BRIEF DESCRIPTION OF DRAWINGS

[0028] 1: first shaft section; 2: second shaft section; 3: first shaft head; 4: second shaft head; 5: intermediate connecting shaft; 51: first connecting shaft; 52: second connecting shaft; 53: clamping portion. DETAILED DESCRIPTION

[0029] In order to better explain the utility model, so as to facilitate understanding, the following will be combined with the drawings, through specific embodiments, the utility model is described in detail.

[0030] Embodiment 1:

[0031] With reference to Figure 2 , Figure 3 and Figure 4 , the embodiment provides a stepped tooling shaft for hydraulic support structural member, comprising a first shaft head 3, a second shaft head 4 and an intermediate connecting shaft 5.

[0032] The first shaft head 3 is provided with a first inner hole in the axial direction, the second shaft head 4 is provided with a second inner hole in the axial direction, and the inner side walls of the first inner hole and the second inner hole are provided with a first thread; the intermediate connecting shaft 5 has a first connecting shaft 51 and a second connecting shaft 52 connected to each other, and the circumferential surfaces of the first connecting shaft 51 and the second connecting shaft 52 are provided with a second thread, the second thread on the first connecting shaft 51 is screwed with the first thread in the first shaft head 3, and the second thread on the second connecting shaft 52 is screwed with the first thread in the second shaft head 4, so that the first shaft head 3 and the second shaft head 4 can be inserted into the inner holes of two parts of the hydraulic support structural member one by one, thereby centering and coaxially positioning the inner holes of the two parts.

[0033] The stepped tooling shaft for hydraulic support structural member of the embodiment, since the first shaft head 3, the second shaft head 4 and the intermediate connecting shaft 5 are detachable, the two ends of the intermediate connecting shaft 5 can be assembled with the first shaft head 3 and the second shaft head 4 of different diameters respectively, thereby forming stepped tooling shafts of different sizes, thereby giving a stepped tooling shaft structure with multiple sizes and high interchangeability.

[0034] As shown in Figure 5 , the second threads on the first connecting shaft 51 and the second connecting shaft 52 are trapezoidal threads, and the first threads in the first inner hole and the second inner hole are also trapezoidal threads. The first thread and the second thread adopt the form of trapezoidal thread, which has high strength and is simple to process and manufacture, and is suitable for mass processing.

[0035] As shown in Figure 6 , the connecting part of the first connecting shaft 51 and the second connecting shaft 52 is provided with a groove in the circumferential direction, and the side wall of the groove forms a clamping portion 53, which is used for clamping tools. For example, the clamping tool is a wrench, which can be clamped on the clamping portion 53, and then the operator adjusts the first shaft head 3 and the second shaft head 4 on the intermediate connecting shaft 5 through the wrench.

[0036] Embodiment 2

[0037] On the basis of embodiment 1, the embodiment provides another stepped tool shaft for hydraulic support structure, the outer diameter size of the first shaft head 3 is 30-60mm, and the outer diameter size of the second shaft head 4 is greater than or equal to 62mm. Specifically, the outer diameter size of the first shaft head 3 and the second shaft head 4 is as follows:

[0038]

[0039] In the embodiment, the outer diameter size of the intermediate connecting shaft 5 is 14-18mm. Preferably, the outer diameter size of the intermediate connecting shaft is 16mm.

[0040] Further, the length size of the intermediate connecting shaft 5 is 150-600mm. For example, the length size of the intermediate connecting shaft 5 can be 150mm, 300mm, 450mm or 600mm.

[0041] Further, the length size of the groove of the intermediate connecting shaft 5 in the axial direction is 10-20mm.

[0042] The rest is the same as embodiment 1, which will not be repeated here.

[0043] In the description of the utility model, it is understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0044] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained 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 specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0047] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A stepped tooling shaft for a hydraulic support structure member, characterized by, The first shaft head (3), the second shaft head (4) and the intermediate connecting shaft (5) are included. The first shaft head (3) is provided with a first inner hole in the axial direction, and the second shaft head (4) is provided with a second inner hole in the axial direction. The intermediate connecting shaft (5) has a first connecting shaft (51) and a second connecting shaft (52) connected to each other, and the circumferential surface of the first connecting shaft (51) and the second connecting shaft (52) is provided with a second thread.

2. The stepped tooling shaft for a hydraulic support structure member of claim 1, wherein: The first shaft head (3) and the second shaft head (4) can be inserted into the inner holes of the two parts of the hydraulic support structure one by one, thereby centering and coaxially positioning the inner holes of the two parts.

3. The stepped tooling shaft for a hydraulic support structure member of claim 1, wherein: The first thread in the first inner hole and the second inner hole, and the second thread on the first connecting shaft (51) and the second connecting shaft (52) are all trapezoidal threads.

4. The stepped tooling shaft for a hydraulic support structure member of claim 1, wherein: The connecting part of the first connecting shaft (51) and the second connecting shaft (52) is provided with a groove in the circumferential direction, and the side wall of the groove forms a clamping part (53) for clamping tools.

5. The stepped tooling shaft for a hydraulic support structure member of claim 1, wherein: The outer diameter of the first shaft head (3) is 30-60mm.

6. The stepped tooling shaft for hydraulic support structure members of claim 3, wherein: The outer diameter of the second shaft head (4) is greater than or equal to 62mm.

7. The stepped tooling shaft for hydraulic support structure members of claim 6, wherein: The outer diameter of the intermediate connecting shaft (5) is 14-18mm.

8. The stepped tooling shaft for a hydraulic support structure member of claim 7, wherein: The length of the intermediate connecting shaft (5) is 150-600mm. The length of the groove of the intermediate connecting shaft (5) in the axial direction is 10-20mm.

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