CN205314577U - Casing of vibrting spear and novel connection structure of button head - Google Patents

Abstract

The utility model discloses a novel connection structure between a casing of a vibrating rod and a round head. The connecting block is in interference fit with the inner side wall of the casing, and the side wall where the round head connecting block matches with the casing has a first annular installation groove, and a first sealing ring is installed on the first annular installation groove. The interference fit between the round head connecting block and the casing of the utility model can ensure that the two are relatively fixed, and the round head and the casing are relatively fixed through the round head connecting block. This structural form can avoid setting threads in the casing, which is effective. The structural strength of the casing is ensured; the better airtightness between the round head connection block and the casing can be ensured by setting the first annular installation groove and the first sealing ring.

Description

A new connection structure between the shell of the vibrator and the round head

technical field

The utility model relates to a vibrating rod, in particular to a novel connection structure between a casing and a round head of the vibrating rod.

Background technique

The vibrating rod is a kind of machine tool used in engineering construction, which can make the concrete densely bonded, eliminate the phenomenon of honeycomb pitting of the concrete, and improve the strength.

At present, the connection method of the round head of the vibrating rod is mostly the internal thread on the inner wall of the casing, and the external thread on the round head, which is directly connected through the thread. This structure not only cannot guarantee the sealing of the connection, but also the firmness of the connection. Reliable, and it will be threaded inside the car casing, resulting in thinning of the casing wall and reducing the strength of the casing. During the use of the vibrating rod, the casing is easily damaged, thereby reducing the life of the entire vibrating rod.

Utility model content

Aiming at the above problems, the utility model overcomes at least one deficiency, and proposes a new connection structure between the casing and the round head of the vibrating rod. It solves the problems of poor sealing performance under the existing connection structure, easy damage to the casing, and low service life of the vibrating rod.

The technical scheme that the utility model takes is as follows:

A new connection structure between the casing and the round head of a vibrating rod, including a round head connection block, one end of the round head connection block is sleeved on the casing, and the other end is relatively fixedly connected to the round head; the round head connection block is connected with the round head The inner side wall of the casing is interference fit, and the side wall where the round head connecting block matches with the casing has a first annular installation groove, and a first sealing ring is installed on the first annular installation groove.

The interference fit between the round head connecting block and the casing can ensure that the two are relatively fixed, and the round head and the casing are relatively fixed through the round head connecting block. This structural form can avoid setting threads in the casing, effectively ensuring the machine Structural strength of the shell; by providing the first annular installation groove and the first sealing ring, better airtightness between the round head connection block and the casing can be ensured.

Further, the side wall of the round head connecting block and the casing has knurling.

The knurling process is carried out on the matching side wall of the casing, so that when the round head connecting block is pressed into the casing, it is easier than that of the same interference but without knurling, and the strength is guaranteed.

Further, the round head connecting block is threadedly fixed with the round head; one end of the round head connecting block has a threaded hole, the round head has a connecting post, and the side wall of the connecting post has a Hole fits with external thread.

Further, the round head connection block is threadedly fixed with the round head; one end of the round head connection block has a connecting post, and the side wall of the connecting post has an external thread; the round head has a Threaded hole.

Further, the round head has a matching end matched with the end face of the casing, and the matching end has a fitting portion extending into the casing, and the fitting portion has a second annular installation for installing the second sealing ring. groove.

The round head connecting block and the round head are screwed and fixed, so that the mating end is in contact with the end face of the casing, and a good airtightness between the round head and the casing can be ensured by setting the second annular installation groove and the second sealing ring .

Further, the end of the inside wall of the housing that cooperates with the round head has a chamfer, and the chamfer is in sealing fit with the second sealing ring.

The chamfering can not only facilitate the insertion of the matching part, but also provide a space for accommodating the second sealing ring.

Further, it also includes anti-loosening washers sleeved on the connecting column, and the two ends respectively abut against the round head and the connecting part of the round head.

The role of preventing the round head from loosening during high-speed vibration can be played by setting the anti-loosening washer.

Further, the inner wall of the casing has an annular groove, and the new connection structure also includes a circlip installed on the annular groove, and an elastic member arranged between the circlip and the round head connection block; the The two ends of the elastic member respectively abut against the round head connection block and the elastic retaining ring.

During the operation of the vibrating rod, due to the high-speed vibration of the vibrating rod, the position of the round head connection block will inevitably change. At this time, the elastic member can play a buffer role, and the elastic retaining ring can ensure the position of the round head connection block. , so that it will not fall off.

Further, the round head connection block has an elastic member notch or an elastic member groove that cooperates with the elastic member.

Further, the elastic member is a wave elastic washer.

Further, the connecting column has a threaded hole for reworking along its axis direction.

The rework of the vibrator can be facilitated by setting the rework threaded hole, and it is convenient to take out the round head connection block during maintenance.

The beneficial effects of the utility model are: the interference fit between the round head connecting block and the casing can ensure that the two are relatively fixed, and the round head and the casing are relatively fixed through the round head connecting block. The inner screw thread effectively ensures the structural strength of the casing; the arrangement of the first annular mounting groove and the first sealing ring can ensure better airtightness between the round head connection block and the casing.

Description of drawings:

Fig. 1 is the sectional view of the novel connection structure of the casing of the vibrating rod of the present invention and the round head;

Fig. 2 is an enlarged view of A in Fig. 1 .

Each reference mark in the figure is:

1. Round head, 2. Round head connecting block, 3. Case, 4. Threaded hole, 5. Connecting column, 6. Locking washer, 7. Second annular installation groove, 8. Second sealing ring, 9. Chamfering, 10, annular groove, 11, elastic retaining ring, 12, elastic piece, 13, first annular installation groove, 14, first sealing ring, 15, large diameter section, 16, mating part, 17, mating end , 18, repair threaded hole.

detailed description:

Below in conjunction with each accompanying drawing, the utility model is described in detail.

As shown in Figures 1 and 2, a new connection structure between the casing 3 of a vibrating rod and the round head 1 includes a round head connection block 2, one end of the round head connection block 2 is sleeved on the casing 3, and the other end is connected to the round head. The round head 1 is relatively fixedly connected; the round head connecting block 2 has an interference fit with the inner side wall of the casing, and the side wall where the round head connecting block 2 cooperates with the casing has a first annular mounting groove 13, and the first annular mounting groove A first sealing ring 14 is installed.

In this embodiment, the side wall of the round head connecting block 2 that cooperates with the casing has knurling. The knurling process is carried out on the matching side wall of the casing, so that when the round head connecting block is pressed into the casing, it is easier than that of the same interference but without knurling, and the strength is guaranteed.

In order to facilitate the connection, the round head connecting block and the round head are threaded and fixed; in the present embodiment, the round head connecting block includes a large diameter section 15 that is positioned at the casing 3, and the other end of the round head connecting block has a connecting column 5 , the side wall of the connecting column has an external thread; the round head has a threaded hole 4 that cooperates with the external thread. In this embodiment, the knurling is arranged on the outer wall of the large-diameter section 15; The direction has a threaded hole 18 for repairing. By setting the threaded hole for repairing, the repairing of the vibrating rod can be facilitated, and the round head connecting block can be taken out conveniently during maintenance. In other embodiments, the round head connection block and the round head screw connection structure can be like this: one end of the round head connection block 2 has a threaded hole, the round head 1 has a connecting column, and the side wall of the connecting column has a threaded hole mating external thread.

In this embodiment, the round head 1 has a mating end 17 that matches the end face of the casing, and the mating end has a fitting portion 16 extending into the casing, and the fitting portion 16 has a second ring-shaped installation for installing the second sealing ring 8 Slot 7. The round head connecting block and the round head are screwed and fixed, so that the mating end is in contact with the end face of the casing, and a good airtightness between the round head and the casing can be ensured by setting the second annular installation groove and the second sealing ring .

In this embodiment, there is a chamfer 9 at the end where the inner side wall of the casing cooperates with the round head, and the chamfer is tightly matched with the second sealing ring. The chamfering can not only facilitate the insertion of the matching part, but also provide a space for accommodating the second sealing ring.

As shown in FIG. 2 , in this embodiment, an anti-loosening washer 6 that is sheathed on the connecting column 5 and abuts against the round head and the connecting portion of the round head at both ends is also included. The role of preventing the round head from loosening during high-speed vibration can be played by setting the anti-loosening washer.

In this embodiment, the inner wall of the casing has an annular groove 10, and the new connection structure also includes a circlip 11 mounted on the annular groove, and an elastic member arranged between the circlip and the round head connection block 12. The two ends of the elastic member 12 respectively abut against the round head connection block and the elastic circlip. During the operation of the vibrating rod, due to the high-speed vibration of the vibrating rod, the position of the round head connection block will inevitably change. At this time, the elastic member can play a buffer role, and the elastic retaining ring can ensure the position of the round head connection block. , so that it will not fall off.

In actual use, in order to facilitate the installation of the elastic member 12 , the round head connecting block 2 has an elastic member notch or an elastic member groove that cooperates with the elastic member 12 .

The elastic member may be a wave elastic washer. In this embodiment, the elastic member is a blackened wave elastic washer, and the lock washer is a NORD-LOCK washer.

In order to facilitate installation in this embodiment, vegetable oil can be applied to the first sealing ring during assembly, so that when the round head connecting block is positioned and pressed into the casing with tooling, damage to the first sealing ring can be avoided, and the second sealing ring can be better protected. A sealing ring type ring makes the sealing performance of the vibrating rod better. When assembling, when the second sealing ring is loaded into the round head, vegetable oil can be applied during assembly, so that the damage of the second sealing ring can be avoided, the second sealing ring can be better protected, and the sealing performance of the vibrating rod is better. In this embodiment, the first sealing ring and the second sealing ring may be O-rings or other types of sealing rings.

In the new connection structure of this embodiment, the interference fit between the round head connecting block and the casing can ensure that the two are relatively fixed, and the round head and the casing are relatively fixed through the round head connecting block. The inner screw thread effectively ensures the structural strength of the casing; the arrangement of the first annular mounting groove and the first sealing ring can ensure better airtightness between the round head connection block and the casing.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the scope of patent protection of the present utility model. All equivalent structural transformations made by using the description of the utility model and the contents of the accompanying drawings are directly or indirectly used in other related applications. Technical fields are all included in the protection scope of the present utility model in the same way.

Claims (10)

1. A novel connection structure between a casing of a vibrating rod and a round head, characterized in that it includes a round head connection block, one end of the round head connection block is sleeved on the casing, and the other end is relatively fixedly connected to the round head The round head connection block is interference fit with the inner side wall of the casing, and the side wall where the round head connection block matches with the casing has a first annular installation groove, and a first sealing ring is installed on the first annular installation groove. 2. The novel connection structure between the casing and the round head of the vibrating rod according to claim 1, characterized in that the side wall of the round head connecting block and the casing has knurling. 3. The new connection structure between the casing of the vibrating rod and the round head as claimed in claim 1, wherein the round head connecting block is threadedly connected and fixed with the round head; one end of the round head connecting block has a screw thread The round head has a connecting column, and the side wall of the connecting column has an external thread matched with the threaded hole. 4. The novel connection structure between the casing of the vibrating rod and the round head as claimed in claim 1, wherein the round head connecting block is screwed and fixed to the round head; one end of the round head connecting block has a connecting The column, the side wall of the connecting column has an external thread; the round head has a threaded hole matched with the external thread. 5. The new connection structure between the casing and the round head of the vibrating rod as claimed in claim 3 or 4, wherein the round head has a matching end that matches the end face of the casing, and the matching end has a The matching part of the casing, the matching part has a second annular installation groove for installing the second sealing ring. 6. The new connection structure between the shell of the vibrating rod and the round head as claimed in claim 5, wherein the inner wall of the shell and the end of the round head have a chamfer, and the chamfer and the second sealing ring Seal fit. 7. The new connection structure between the shell of the vibrating rod and the round head as claimed in claim 3 or 4, characterized in that it also includes being sleeved on the connecting column, and the two ends are respectively abutted against the round head and the round head connection part lock washer. 8. The new connection structure between the casing and the round head of the vibrating rod as claimed in claim 1, wherein the inner wall of the casing has an annular groove, and the new connection structure also includes a ring mounted on the annular groove. An elastic circlip, and an elastic member arranged between the elastic circlip and the round head connection block; the two ends of the elastic member abut against the round head connection block and the elastic circlip respectively. 9. The new connection structure between the shell of the vibrating rod and the round head as claimed in claim 8, characterized in that, the round head connection block has an elastic member notch or an elastic member groove that cooperates with the elastic member . 10 . The novel connection structure between the shell of the vibrating rod and the round head according to claim 4 , wherein the connecting column has a rework threaded hole along its own axis. 11 .