CN210122583U

CN210122583U - Tool for fixing end socket in heat treatment

Info

Publication number: CN210122583U
Application number: CN201920844346.8U
Authority: CN
Inventors: 王辉; 刘莉滋; 张益维
Original assignee: Chongqing Three Gorges University
Current assignee: Chongqing Three Gorges University
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-03-03
Anticipated expiration: 2029-06-05

Abstract

The utility model discloses a tool for fixing a seal head in a heat treatment way, which comprises a tool base, a lifting lug, a seal head clamping block, an extension bar, a bolt fixing seat and a fastening bolt; four lifting lugs and four bolt fixing seats are uniformly welded on the edge of the tool base; the inner hole of the bolt fixing seat is provided with a trapezoidal internal thread, and the fastening bolt is a trapezoidal external thread. Trapezoidal threads with the same specification are processed at two ends of the extension bar, one end of the extension bar is an internal thread, and the other end of the extension bar is an external thread; the surface of the end socket clamping block, which is contacted with the end socket, is provided with a curved surface matched with the surface of the end socket, and the other surface of the end socket clamping block is provided with an internal thread screwed with the extension bar or the fastening bolt. The quantity of the extension bar of accessible selection connection to adjust fastening bolt's screw in position, realize fixing the head of different diameters, prevent that the head from taking place the deformation of kick-backing in thermal treatment. Compared with the method of welding and fixing the end socket, the surface of the end socket of the utility model has no welding spot, and the disassembly is convenient after the heat treatment.

Description

Tool for fixing end socket in heat treatment

Technical Field

The utility model belongs to the technical field of frock clamp, especially, relate to a head thermal treatment frock.

Background

The seal head is an important pressure-bearing part of the pressure vessel, the quality of the seal head is directly related to the safety problem of the pressure vessel, and the overall dimension of the seal head is an important parameter for ensuring the subsequent installation with other parts.

The end socket is formed by adopting a plastic forming process mostly, after plastic processing, in order to ensure that the end socket has better mechanical property and corrosion resistance, a proper heat treatment process is often required to be carried out on the formed end socket, and the formed end socket is easy to rebound and deform due to the release of residual stress in the heat treatment process.

Because head outer wall deflection is greater than the inner wall deflection, the head resilience deformation can make the outside extension of head oral area size, leads to the nominal diameter grow of head. If not properly controlled, the dimensions may not meet the design requirements. Therefore, in order to prevent the head from deforming during heat treatment, the head is usually welded to the tool bottom plate by a welding method, and the welding method leaves a welding point on the surface of the head.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a be used for head thermal treatment fixed frock for solve owing to adopt the solder joint problem that the welded fastening head left.

In order to achieve the above object, the technical solution of the present invention is as follows.

The utility model provides a be used for fixed frock of head thermal treatment, includes fixture base, lug, head clamp tight piece, extension bar, bolt fixing base, fastening bolt, four lugs and four bolt fixing bases have been welded to fixture base's edge equipartition ground.

Furthermore, trapezoidal internal thread is processed to bolt fixing base hole, has trapezoidal external screw thread on the fastening bolt, and the two can form the screw thread and close soon.

Furthermore, trapezoidal threads with the same specification are processed at two ends of the extension bar, one end of the extension bar is an internal thread, and the other end of the extension bar is an external thread.

Furthermore, the surface of the end socket clamping block, which is contacted with the end socket, is provided with a curved surface similar to the surface of the end socket, and the other surface of the end socket clamping block is provided with an internal thread screwed with the extension bar or the fastening bolt.

The utility model discloses can be according to the size of a dimension of head, select the quantity of the extension bar of connecting to adjust fastening bolt's screw in position, exert force to the tight piece of head clamp, realize fixing the head of different diameters, prevent that the head from taking place the resilience and warping in heat treatment. Compare with the head of the fixed thermal treatment of welding method, the utility model discloses a head surface solderless, and dismantle the convenience after the thermal treatment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a top view of the utility model discloses a frock for head heat treatment is fixed.

Fig. 2 is a schematic structural diagram of an embodiment of a tooling for fixing a head in a heat treatment process.

Fig. 3 is a schematic view of the sealing head in the embodiment of the present invention.

Fig. 4 is a schematic structural view of the fastening part of the present invention.

Fig. 5 is a cross-sectional view of an embodiment of the present invention.

Fig. 6 is an enlarged schematic view of a portion a in fig. 5.

Shown in the figure: 1. the tool comprises a tool base, 2 lifting lugs, 3 end socket clamping blocks, 4 extension rods, 5 bolt fixing seats, 6 fastening bolts and 7 end sockets.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a be used for fixed frock of head thermal treatment, see fig. 1-6, including fixture base 1, lug 2, head clamp block 3, extension bar 4, bolt fixing base 5, fastening bolt 6, head 7. The tool base 1 is a round thick steel plate with an inner hole, and four lifting lugs 2 and four bolt fixing seats 5 are uniformly welded on the edge of the tool base 1; the tight piece 3 of head clamp, extension bar 4, bolt fixing base 5, fastening bolt 6 constitute the fastening part of a set of tight head of clamp together, the utility model discloses total 4 evenly distributed's of group fastening part.

Trapezoidal internal threads are processed in the inner hole of the bolt fixing seat 5, trapezoidal external threads are arranged on the fastening bolt 6, the tooth shapes, the diameters, the rotating directions, the thread numbers and the thread pitches of the trapezoidal internal threads and the trapezoidal external threads are the same, and the trapezoidal internal threads and the trapezoidal external threads can form threaded screwing.

Furthermore, trapezoidal threads with the same specification are processed at two ends of the extension bar 4, one end of the extension bar is an internal thread, and the other end of the extension bar is an external thread.

Referring to fig. 4 and 6, the surface of the end socket clamping block 3 contacting the end socket has a curved surface matching the surface of the end socket, the other surface of the end socket clamping block 3 has an internal thread screwed with the extension bar 4 or the fastening bolt 6, and the end socket can be clamped when the end socket clamping block 3 is close to the end socket.

During the use, put head 7 in the middle of fixture base 1, according to the size of a dimension of head 7, select the quantity of extension bar 4 of connecting, press from both sides tight piece 3 of head and extension bar 4 and close the connection through the screw soon, put 4 positions that are close to the head before the bolt fixing base 5 correspondingly, then in the bolt fixing base 5 that corresponds 4 department fastening bolt 6 screw in, let it slowly be close to with extension bar 4, until in the internal thread of last screw in extension bar 4, the realization is pressed from both sides tight fixedly to the head.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

the utility model discloses can be according to the size of a dimension of head, select the quantity of the extension bar of connecting to adjust fastening bolt's screw in position, realize fixing the head of different diameters. Compare with the head of the fixed heat treatment of welding method, the utility model discloses a method is simple, does not have the solder joint on the head, and dismantles the convenience after the heat treatment.

The above is only the preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and the modifications, equivalent replacements, etc. to the above embodiments are included in the protection scope of the present invention within the spirit and principle of the present invention.

Claims

1. The utility model provides a be used for fixed frock of head thermal treatment, it includes fixture base (1), lug (2), head clamp piece (3), extension bar (4), bolt fixing base (5), fastening bolt (6), its characterized in that: four lifting lugs (2) and four bolt fixing seats (5) are uniformly welded on the edge of the tool base (1); the inner hole of the bolt fixing seat (5) is processed with a trapezoidal internal thread, the fastening bolt (6) is provided with a trapezoidal external thread, the trapezoidal internal thread and the trapezoidal external thread can form thread screwing, the surface of the seal head clamping block (3) contacting with the seal head is provided with a curved surface matched with the surface of the seal head, and the other surface of the seal head clamping block is provided with an internal thread screwed with the extension rod (4) or the fastening bolt (6).

2. The tooling for heat treatment and fixation of the end socket according to claim 1, is characterized in that: the trapezoidal thread that extension bar (4) both ends processing had, one end is the internal thread, and the other end is the external screw thread, and the internal thread of extension bar (4) can close with fastening bolt (6) soon and be connected, and the external screw thread of extension bar (4) can close with the internal thread of head clamp block (3) soon and be connected.