CN220880350U - Screw extrusion tool - Google Patents

Abstract

The utility model provides a screw extrusion tool, which relates to the technical field of steel bar connection and comprises an upper jaw and a lower jaw, wherein the middle part of the lower jaw is provided with a mounting hole, the upper end of the mounting hole is provided with a screw rod jacket, the middle part of the screw rod jacket is provided with an upper jaw passing hole, one end of the lower jaw is provided with a bearing seat I, the bearing seat I is internally provided with a bearing rod through five rotations of a bearing, and one end of the bearing rod extends into the mounting hole and is fixedly provided with a bevel gear I; a screw rod is arranged in the screw rod outer sleeve, the upper end of the screw rod is in threaded connection with the upper jaw, and the clamping part of the upper jaw extends out of the upper jaw passing hole; the lower end of the spiral rod stretches into the mounting hole and is fixedly connected with a bevel gear II which is meshed with the bevel gear I. Compared with the existing steel bar connecting tool, the hydraulic power equipment is not required to be additionally arranged, and the construction is not affected by weather.

Description

Screw extrusion tool

Technical Field

The utility model relates to the technical field of steel bar connection, in particular to a screw extrusion tool.

Background

When the concrete structure adopts an assembly type construction process, the connection mode of the steel bars in the prefabricated components is mainly divided into grouting joint connection and steel bar mechanical connection. The common steel bar mechanical connection mode is to sleeve a steel bar connector on the outer sides of two steel bars, then radially extrude the steel bar connector or axially extrude the steel bar connector through corresponding steel bar connection tools, so that the steel bar connector deforms and is meshed with the two steel bars to be connected, and the purpose of connection is achieved.

At present, most of the existing steel bar connecting tools adopt an oil cylinder structure. The upper jaw and the lower jaw are respectively and fixedly connected with a piston rod and a cylinder body of the oil cylinder, and then the upper jaw and the lower jaw are mutually close to and far away from each other through the relative movement between the cylinder body and the piston rod, so that the axial extrusion of the upper jaw and the lower jaw to the steel bar connector is realized, namely the corresponding steel bar connection operation is realized.

However, in the actual use process, the hydraulic power equipment is additionally arranged on the steel bar connecting tool adopting the oil cylinder structure, so that the whole use process is excessively complicated; meanwhile, because hydraulic oil can be affected by temperature, the problem that equipment cannot be used due to poor weather conditions exists, and therefore workers cannot normally construct the hydraulic oil.

Disclosure of utility model

The technical problem solved by the utility model is to provide a screw extrusion tool which does not need to be additionally provided with hydraulic power equipment and is free from the influence of weather in construction, so that the work of reinforcing steel bar connection by workers is facilitated.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the screw extrusion tool comprises an upper jaw and a lower jaw, wherein the middle part of the lower jaw is provided with a mounting hole, the upper end of the mounting hole is provided with a screw rod jacket, the middle part of the screw rod jacket is provided with an upper jaw passing hole, one end of the lower jaw is provided with a bearing seat I, a bearing rod is arranged in the bearing seat I in a rotating way through a bearing five, and one end of the bearing rod extends into the mounting hole and is fixedly provided with a bevel gear I; a screw rod is arranged in the screw rod outer sleeve, the upper end of the screw rod is in threaded connection with the upper jaw, and the clamping part of the upper jaw extends out of the upper jaw passing hole; the lower end of the spiral rod stretches into the mounting hole and is fixedly connected with a bevel gear II which is meshed with the bevel gear I. The utility model can drive the bevel gear I to rotate through the rotating bearing rod, drive the bevel gear II and the screw rod to rotate through the bevel gear I, and drive the upper jaw to move up and down through the rotation of the screw rod, thereby realizing the axial extrusion of the steel bar connector.

Further, a mounting shaft shoulder is arranged at the lower part of the screw rod, a first step surface is arranged at the upper part of a mounting hole of the lower jaw, a first bearing is arranged between the first step surface and the mounting shaft shoulder, and the first bearing is preferably a thrust ball bearing.

Further, the bottom protection sleeve is installed at the lower part of lower jaw, and screw rod spliced pole is installed through bearing four rotations to the inside of bottom protection sleeve, and screw rod spliced pole is connected with the lower extreme of screw rod, and preferably adopts threaded connection between screw rod and the screw rod, and four preferred antifriction bearings of bearing. The utility model can assist in supporting and fixing the lower part of the screw rod through the screw rod connecting column.

Further, an outer cylindrical surface is arranged at the lower end of the bevel gear II, and a bearing III is arranged between the outer cylindrical surface of the bevel gear II and the bottom protective sleeve, and the bearing III is preferably a rolling bearing.

Further, a second step surface is arranged in the middle of the bottom protective sleeve, a second bearing seat is arranged on the second step surface, a second bearing is arranged between the upper end surface of the second bearing seat and the lower end surface of the second bevel gear, and the second bearing is preferably a thrust ball bearing.

Further, the upper end of the screw rod outer sleeve is connected with a top cover in a threaded manner, and the inner cavity of the screw rod outer sleeve is protected through the top cover.

Further, the screw rod outer sleeve is in threaded connection with a backup nut at the upper position of the lower jaw, and anti-loosening treatment is carried out through the backup nut.

Further, the lower jaw is provided with a locking block.

From the above technical scheme, the utility model has the following advantages: compared with the traditional steel bar connecting tool, the utility model adopts the matching of the threaded connection structure and the gear transmission structure, has simple structure and reliable quality, and can effectively solve the problem that hydraulic equipment cannot be used due to weather conditions, thereby ensuring that workers can normally construct and work and ensuring that the construction period is normally carried out.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a right side cross-sectional view of an embodiment of the present utility model;

Fig. 2 is a front cross-sectional view of an embodiment of the present utility model.

In the figure: 1. a top cover; 2. a screw rod; 3. an upper jaw; 4. preparing a mother; 5. a lower jaw; 6. a first bearing; 7. bevel gears II; 8. a third bearing; 9. a second bearing; 10. a bearing IV; 11. a screw rod connecting column; 12. a second bearing seat; 13. a bottom protective sleeve; 14. a bolt; 15. a bearing rod; 16. bevel gears I; 17. a fifth bearing; 18. a first bearing seat; 19. a locking block; 20. a screw rod jacket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 2, the present utility model provides a screw extrusion tool including a screw 2, and a screw housing 20 provided outside the screw 2. The screw rod outer sleeve 20 is characterized in that a top cover 1 is in threaded connection with the top of the screw rod outer sleeve 20, an upper jaw passing hole is formed in the middle of the screw rod outer sleeve 20, a backup nut 4 and a lower jaw 5 are sequentially in threaded connection with the lower portion of the screw rod outer sleeve 20 from top to bottom, a locking block 19 is arranged at one end of the lower jaw 5, a first bearing seat 18 is arranged at the other end of the lower jaw 5, a bearing rod 15 which is horizontally placed is rotatably arranged inside the first bearing seat 18 through two bearings five 17, rolling bearings are preferably adopted for the bearings five 17, one end of the bearing rod 15 stretches into a mounting hole in the middle of the lower jaw 5 and is used for being in threaded connection with the screw rod outer sleeve 20, a first bevel gear 16 is fixedly arranged in the mounting hole of the screw rod outer sleeve 20, and the first bevel gear 16 can be arranged on the bearing rod 15 through a key connection structure, and can be directly designed into an integral workpiece with the bearing rod 15.

The upper end of the screw rod 2 is connected with the upper jaw 3 in a threaded manner, and the clamping part of the upper jaw 3 extends out of the upper jaw passing hole. The lower end of the screw rod 2 stretches into the mounting hole and is fixedly connected with a bevel gear II 7, the bevel gear II 7 is meshed with a bevel gear I16, and the bevel gear II 7 and the screw rod 2 can be connected together by adopting a key connection structure or other connection structures, and can also be directly in an integrated structure. At this time, the utility model can drive the first bevel gear 16 to rotate through the rotating bearing rod 15, drive the second bevel gear 7 and the spiral rod 2 to rotate through the first bevel gear 16, drive the upper jaw 3 to move up and down through the rotation of the spiral rod 2, and then realize the axial extrusion of the steel bar connector.

In addition, in order to make the whole structure more stable and reduce friction force, the utility model also sets up the installation shaft shoulder in the inferior part of the screw rod 2, there is a step surface I in the upper portion of the mounting hole of the lower jaw 5, and set up the bearing I6 between step surface I and installation shaft shoulder; the lower part of the mounting hole of the lower jaw 5 is in threaded connection with a bottom protective sleeve 13, a bearing III 8 is arranged between the upper part of the bottom protective sleeve 13 and the outer cylindrical surface of a bevel gear II 7, a step surface II is arranged in the middle of the bottom protective sleeve 13, a bearing seat II 12 is mounted on the step surface II, and a bearing II 9 is mounted between the upper end surface of the bearing seat II 12 and the lower end surface of the bevel gear II 7; the lower part of the bottom protective sleeve 13 is rotatably provided with a screw rod connecting column 11 through at least one bearing IV 10, and the upper end of the screw rod connecting column 11 is in threaded connection with the lower end of the screw rod 2. In this case, the screw rod connecting column 11 can assist in supporting and fixing the lower part of the screw rod 2, friction force between the screw rod 2 and the lower jaw 5 is reduced through corresponding bearings, the first bearing 6 and the second bearing 9 are preferably thrust ball bearings, and the third bearing 8 and the fourth bearing 10 are preferably rolling bearings.

In addition, the utility model also has four bolts 14 arranged on the end part of the first bearing seat 18 in a threaded manner, and the shaft shoulders or the end parts of the four bolts 14 are abutted against the corresponding bearings five 17, so as to prevent the bearings five 17 in the first bearing seat 18, which are close to the opening, from falling out.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A screw extrusion tool, which comprises an upper jaw (3) and a lower jaw (5); the novel screw rod type jaw is characterized in that a mounting hole is formed in the middle of a lower jaw (5), a screw rod outer sleeve (20) is mounted at the upper end of the mounting hole, an upper jaw passing hole is formed in the middle of the screw rod outer sleeve (20), a first bearing seat (18) is mounted at one end of the lower jaw (5), a bearing rod (15) is rotatably mounted in the first bearing seat (18) through a fifth bearing (17), and one end of the bearing rod (15) extends into the mounting hole and is fixedly provided with a first bevel gear (16); a screw rod (2) is arranged in the screw rod jacket (20), the upper end of the screw rod (2) is connected with an upper jaw (3) in a threaded manner, and the clamping part of the upper jaw (3) extends out of the upper jaw passing hole; the lower end of the screw rod (2) stretches into the mounting hole and is fixedly connected with a bevel gear II (7), and the bevel gear II (7) is meshed with a bevel gear I (16).

2. Screw extrusion tool according to claim 1, characterized in that the lower part of the screw rod (2) is provided with a mounting shoulder, the upper part of the mounting hole of the lower jaw (5) is provided with a step surface one, and a bearing one (6) is arranged between the step surface one and the mounting shoulder.

3. Screw extrusion tool according to claim 1 or 2, characterized in that the lower part of the lower jaw (5) is provided with a bottom protective sleeve (13), the inside of the bottom protective sleeve (13) is rotatably provided with a screw rod connecting column (11) through a bearing IV (10), and the screw rod connecting column (11) is connected with the lower end of the screw rod (2).

4. A screw extrusion tool according to claim 3, characterized in that the lower end of the bevel gear two (7) is provided with an outer cylindrical surface, and that a bearing three (8) is provided between the outer cylindrical surface of the bevel gear two (7) and the bottom protective sleeve (13).

5. A screw extrusion tool according to claim 3, characterized in that the middle part of the bottom protective sleeve (13) is provided with a second step surface, a second bearing seat (12) is arranged on the second step surface, and a second bearing (9) is arranged between the upper end surface of the second bearing seat (12) and the lower end surface of the second bevel gear (7).

6. Screw extrusion tool according to claim 1, characterized in that the upper end of the screw jacket (20) is screwed with the top cap (1).

7. Screw extrusion tool according to claim 1, wherein the screw jacket (20) is screwed with a backup nut (4) at a position above the lower jaw (5).

8. Screw extrusion tool according to claim 1, characterized in that the lower jaw (5) is provided with a locking block (19).