CN219426693U

CN219426693U - Stretching mechanism of hydraulic bolt stretcher

Info

Publication number: CN219426693U
Application number: CN202223385408.4U
Authority: CN
Inventors: 朱东海; 刘达成
Original assignee: Shanghai Primo Tools Co ltd
Current assignee: Shanghai Primo Tools Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-07-28
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a hydraulic bolt stretcher stretching mechanism, and belongs to the technical field of hydraulic bolt stretchers. The hydraulic cylinder is arranged on the upper surface of the fixed object, the bolt is located in the hydraulic cylinder, the threaded stretching head is inserted in the hydraulic cylinder, the bolt is inserted in the threaded stretching head, and the outer surface of the threaded stretching head is in contact with the upper surface of the hydraulic cylinder. According to the utility model, the threaded stretching head, the hydraulic cylinder, the fastening mechanism and the power mechanism are arranged, when the bolt is stretched, the piston of the hydraulic cylinder can drive the threaded stretching head to move upwards, so that the bolt is stretched, after the stretching is finished, the power mechanism can drive the fastening mechanism to rotate, and when the fastening mechanism rotates, the nut on the bolt can be fastened, so that the device can automatically fasten the nut after the bolt is stretched.

Description

Stretching mechanism of hydraulic bolt stretcher

Technical Field

The utility model relates to a hydraulic bolt stretcher stretching mechanism, and belongs to the technical field of hydraulic bolt stretchers.

Background

The bolt stretcher generally comprises a hydraulic pump, a high-pressure hose, a pressure gauge and a stretching body, and can convert hydraulic energy into mechanical energy to stretch the bolts, so that the fastening operation of the bolts is realized, and the technical key points of the hydraulic bolt stretcher disclosed in China patent with the publication number of CN111408931B are as follows: including holding ring, bolt, first nut screw thread cup joints on the bolt, first nut screw thread suit, the fixed cover in top of holding ring is equipped with the oil storehouse, movable cover is equipped with the piston in the oil storehouse, the top fixed connection top ring of piston, and the top of top ring extends out the outside on oil storehouse top, the oil storehouse has been cup jointed to the fixed bottom of oil storehouse side, and oil storehouse and annular oil storehouse switch-on. According to the hydraulic bolt stretcher, through the structural design of the six limiting wedge blocks and the pulling rod in the pulling ring sleeve, the bolts are conveniently stretched upwards at the second nut by utilizing the force transmission of the limiting wedge blocks and the pulling rod, so that the length of the stretched bolts is reduced, the proportion of the stretching occupied part of the bolts at the first nut is large enough, the effective utilization rate of the stretched bolts is improved, and the working efficiency is improved

The problem that has solved the bolt stretching efficiency lower in the above-mentioned scheme, and then influence the tensile overall work efficiency of bolt, but still have some defects, after the hydraulic pressure bolt stretcher stretches the bolt, still need screw up the nut, need in the prior art manual in inserting the round hole on the snap ring with the driving lever, rotate the snap ring with the driving lever to make the snap ring drive the nut and rotate and fasten the nut, it is comparatively troublesome to operate, be difficult to fasten the nut voluntarily, manual operation wastes time and energy. There is therefore a need to propose a new solution to this problem.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the utility model provides a hydraulic bolt stretcher stretching mechanism, it has solved among the prior art need in manual inserting the driving lever in twisting the circular hole on the swivel becket, rotates the snap ring of twisting the nut with the driving lever to fasten the nut, it is comparatively troublesome to operate, is difficult to fasten the nut voluntarily, and manual operation wastes time and energy's problem.

The technical problems to be solved by the utility model are realized by adopting the following technical scheme:

the utility model provides a hydraulic pressure bolt stretcher stretching mechanism, includes by the fixed thing, the inside grafting of fixed thing has the bolt, the surface threaded connection of bolt has the nut, the pneumatic cylinder has been placed to the upper surface of fixed thing, the bolt is located the inside of pneumatic cylinder, the inside grafting of pneumatic cylinder has the screw thread stretching head, the inside at the screw thread stretching head is pegged graft to the bolt screw thread, the surface and the upper surface contact of pneumatic cylinder of screw thread stretching head, the holding tank has been seted up to the inner wall of pneumatic cylinder, logical groove has been seted up to the surface of pneumatic cylinder, the inside of holding tank is equipped with fastening mechanism, one side of screw thread stretching head is equipped with power unit, the inside of pneumatic cylinder is equipped with stop gear.

Through adopting above-mentioned technical scheme, the piston in the pneumatic cylinder can upwards jack-up the screw thread stretching head, and screw thread stretching head threaded connection is at the surface of bolt, and screw thread stretching head can upwards stretch the bolt to realize tensile effect, fastening mechanism can fasten the nut after the bolt is stretched.

The utility model is further provided with: the fastening mechanism comprises a rotating ring sleeved on the outer surface of the nut, the bottom surface of the rotating ring is in contact with the upper surface of the fixed object, teeth which are uniformly distributed circumferentially are fixedly connected to the outer surface of the rotating ring, and the teeth are located in the accommodating groove.

By adopting the technical scheme, the containing groove can contain the rotating ring and the teeth, so that the teeth and the rotating ring can rotate without blocking.

The utility model is further provided with: the inner wall sliding connection of swivel becket has the nut snap ring, the nut snap ring cup joints the surface at the nut, the surface fixedly connected with lifting column of nut snap ring, the lifting groove has been seted up to the upper surface of swivel becket, the inside at the lifting groove is pegged graft in the sliding of lifting column.

Through adopting above-mentioned technical scheme, the swivel becket can drive the nut snap ring through the lift post and rotate, make nut snap ring drive the nut rotation, and the lift post can reciprocate at the inner wall of lift groove, so the nut snap ring can reciprocate for the swivel becket, when screwing up the nut, the nut can down move, the nut snap ring can down move together with the nut, make the lift post slide down at the inner wall of lift groove, the frictional force between lift post and the lift groove is very little, make the lift post slide at the inner wall of lift groove more easily.

The utility model is further provided with: the bottom fixedly connected with spring of lift post, the bottom of spring and the interior bottom wall fixed connection of lift groove, the interior bottom wall fixed connection gag lever post of lift groove, the top slip of gag lever post runs through the bottom surface of lift post, the spring cup joints the surface at the gag lever post.

Through adopting above-mentioned technical scheme, the spring can support the lift post, makes nut snap ring apart from being fixed thing have a section distance, leaves for the nut snap ring has the space of downwardly moving, and the gag lever post can restrict the spring, guarantees that the spring can normally stretch out and draw back, and frictional force between gag lever post and the lift post is less, makes the lift post slide about the gag lever post more easily.

The utility model is further provided with: the power mechanism comprises a fixed plate fixedly connected to the outer surface of the hydraulic cylinder, a rotating shaft is rotatably connected to the inside of the fixed plate, a motor is fixedly connected to the top end of the rotating shaft, and the outer surface of the motor is fixedly connected with the outer surface of the hydraulic cylinder.

Through adopting above-mentioned technical scheme, the motor can drive the pivot and rotate, and the fixed plate can make the pivot rotate more stably.

The utility model is further provided with: one end of the rotating shaft, which is far away from the motor, is fixedly connected with a gear, and the gear penetrates through the groove and is meshed with the teeth.

Through adopting above-mentioned technical scheme, the pivot drives the gear rotation, and the gear can drive tooth rotation to drive the rotation ring rotation, make the rotation ring drive nut snap ring rotation.

The utility model is further provided with: the limiting mechanism comprises an annular limiting groove formed in the inner wall of the hydraulic cylinder, and a limiting ring is connected to the inner wall of the annular limiting groove in a rotating mode.

Through adopting above-mentioned technical scheme, the spacing ring can only rotate in the inside of annular spacing groove, realizes spacing to the spacing ring to frictional force between spacing ring and the annular spacing groove is less, makes the spacing ring can rotate smoothly.

The utility model is further provided with: the outer surface of the limiting ring is fixedly connected with a connecting block, and the bottom surface of the connecting block is fixedly connected with the upper surface of the rotating ring.

Through adopting above-mentioned technical scheme, the swivel becket passes through connecting block and spacing ring fixed connection to carry out spacingly to the swivel becket, swivel becket and spacing ring set up with one heart, make the swivel becket can only rotate around self centre of a circle.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the threaded stretching head, the hydraulic cylinder, the fastening mechanism and the power mechanism are arranged, when the bolt is stretched, the piston of the hydraulic cylinder can drive the threaded stretching head to move upwards, so that the bolt is stretched, after the stretching is finished, the power mechanism can drive the fastening mechanism to rotate, and when the fastening mechanism rotates, the nut on the bolt can be fastened, so that the device can automatically fasten the nut after the bolt is stretched;

2. according to the utility model, the limiting ring, the annular limiting groove and the connecting block are arranged, when the gear drives the tooth and the rotating ring to rotate, the rotating ring can drive the limiting ring to rotate in the annular limiting groove through the connecting block, so that the rotating ring can only rotate around the circle center of the rotating ring, and the purpose of limiting the rotating ring is achieved;

3. according to the utility model, the lifting column, the spring, the nut snap ring and the rotating ring are arranged, and the nut snap ring is supported by the spring to enable a distance between the nut snap ring and a fixed object to be kept, so that a space for the nut snap ring to move downwards is reserved, and the purpose that the nut snap ring can move downwards along with the nut when the nut is fastened is achieved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a partial cross-sectional view of the present utility model.

Fig. 3 is a structural cross-sectional view of the fastening mechanism in the present utility model.

Fig. 4 is an exploded view of a part of the structure of the present utility model.

Fig. 5 is an exploded view of the structure of the stopper mechanism of the present utility model.

Fig. 6 is an exploded view of the structure of the fastening mechanism of the present utility model.

In the figure: 1. a fixed object; 2. a bolt; 3. a screw cap; 4. a hydraulic cylinder; 5. a thread stretching head; 6. a receiving groove; 7. a through groove; 8. a fastening mechanism; 801. a rotating ring; 802. teeth; 803. a nut snap ring; 804. lifting columns; 805. a lifting groove; 806. a spring; 807. a limit rod; 9. a power mechanism; 901. a fixing plate; 902. a rotating shaft; 903. a motor; 904. a gear; 10. a limiting mechanism; 1001. an annular limit groove; 1002. a limiting ring; 1003. and (5) connecting a block.

Detailed Description

The utility model will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-6, a hydraulic bolt stretcher stretching mechanism comprises a fixed object 1, a bolt 2 is inserted into the fixed object 1, a nut 3 is connected to the outer surface of the bolt 2 in a threaded manner, a hydraulic cylinder 4 is arranged on the upper surface of the fixed object 1, the bolt 2 is located inside the hydraulic cylinder 4, a threaded stretching head 5 is inserted into the hydraulic cylinder 4, the bolt 2 is inserted into the threaded stretching head 5 in a threaded manner, the outer surface of the threaded stretching head 5 is in contact with the upper surface of the hydraulic cylinder 4, a containing groove 6 is formed in the inner wall of the hydraulic cylinder 4, a through groove 7 is formed in the outer surface of the hydraulic cylinder 4, a fastening mechanism 8 is arranged in the containing groove 6, a power mechanism 9 is arranged on one side of the threaded stretching head 5, and a limiting mechanism 10 is arranged inside the hydraulic cylinder 4.

The fastening mechanism 8 comprises a rotating ring 801 sleeved on the outer surface of the nut 3, the bottom surface of the rotating ring 801 is in contact with the upper surface of the fixed object 1, teeth 802 which are uniformly distributed circumferentially are fixedly connected to the outer surface of the rotating ring 801, the teeth 802 are located in the accommodating groove 6, the accommodating groove 6 can accommodate the rotating ring 801 and the teeth 802, and the teeth 802 and the rotating ring 801 can rotate without being blocked.

The piston in the hydraulic cylinder 4 can jack up screw thread stretching head 5 upwards, and screw thread stretching head 5 threaded connection is at the surface of bolt 2, and screw thread stretching head 5 can upwards stretch bolt 2 to realize tensile effect, and fastening mechanism 8 can fasten nut 3 after bolt 2 is stretched.

The inner wall sliding connection of swivel ring 801 has nut snap ring 803, nut snap ring 803 cup joints the surface at nut 3, the surface fixed connection of nut snap ring 803 has lifting column 804, lifting groove 805 has been seted up to the upper surface of swivel ring 801, lifting column 804 slip grafting is in the inside of lifting groove 805, swivel ring 801 can drive nut snap ring 803 through lifting column 804 and rotate, make nut snap ring 803 drive nut 3 rotation, and lifting column 804 can reciprocate at the inner wall of lifting groove 805, so nut snap ring 803 can reciprocate relative to swivel ring 801, when screwing up nut 3, nut 3 can move down, nut snap ring 803 can move down together with nut 3, make lifting column 804 slide down at the inner wall of lifting groove 805, the frictional force between lifting column 804 and lifting groove 805 is very little, make lifting column 804 slide at the inner wall of lifting groove 805 more easily

The bottom fixedly connected with spring 806 of lift post 804, the bottom of spring 806 and the interior bottom wall fixed connection of lift groove 805, the interior bottom wall fixed connection gag lever post 807 of lift groove 805, the top slip of gag lever post 807 runs through the bottom surface of lift post 804, spring 806 cup joints the surface at gag lever post 807, spring 806 can support lift post 804, make nut snap ring 803 have a certain distance apart from fixed object 1, leave for nut snap ring 803 has the space of downwardly moving, gag lever post 807 can restrict spring 806, guarantee that spring 806 can normally stretch out and draw back, frictional force between gag lever post 807 and the lift post 804 is less, make lift post 804 slide about gag lever post 807 more easily.

The power unit 9 includes fixed plate 901 of fixed connection at the pneumatic cylinder 4 surface, and the inside rotation of fixed plate 901 is connected with pivot 902, and the top fixedly connected with motor 903 of pivot 902, the surface of motor 903 and the surface fixed connection of pneumatic cylinder 4, and motor 903 can drive pivot 902 and rotate, and fixed plate 901 can make pivot 902 rotate more stably.

One end of the rotating shaft 902 far away from the motor 903 is fixedly connected with a gear 904, the gear 904 penetrates through the groove 7 and is meshed with the teeth 802, the rotating shaft 902 drives the gear 904 to rotate, the gear 904 can drive the teeth 802 to rotate, and therefore the rotating ring 801 is driven to rotate, and the rotating ring 801 drives the nut snap ring 803 to rotate.

The stop gear 10 is including seting up the annular spacing groove 1001 at the pneumatic cylinder 4 inner wall, and the inner wall rotation in annular spacing groove 1001 is connected with spacing ring 1002, and spacing ring 1002 can only rotate in the inside in annular spacing groove 1001, realizes spacing to spacing ring 1002 to frictional force between spacing ring 1002 and the annular spacing groove 1001 is less, makes spacing ring 1002 can rotate smoothly.

The outer surface fixedly connected with connecting block 1003 of spacing ring 1002, the bottom surface of connecting block 1003 and the upper surface fixed connection of rotation ring 801, rotation ring 801 passes through connecting block 1003 and spacing ring 1002 fixed connection to carry out spacing to rotation ring 801, rotation ring 801 and spacing ring 1002 concentric setting makes rotation ring 801 can only rotate around self centre of a circle.

The implementation principle of the utility model is as follows:

when the device is used, firstly, the hydraulic cylinder 4 is sleeved on the outer side of the bolt 2, the nut snap ring 803 is sleeved on the outer side of the nut 3, then the thread stretching head 5 is inserted into the hydraulic cylinder 4, the thread stretching head 5 is screwed on the bolt 2 until the thread stretching head 5 is in contact with the hydraulic cylinder 4, oil is filled into the hydraulic cylinder 4 through the oil filling port at this time, the piston is lifted upwards under the action of hydraulic pressure, the piston lifts the thread stretching head 5 upwards, so that the bolt 2 is stretched, after the stretching is completed, the motor 903 is started to drive the rotating shaft 902 and the gear 904 to rotate, the gear 904 drives the rotating ring 801 to rotate through the teeth 802, the rotating ring 801 drives the nut snap ring 803 to rotate, the nut snap ring 803 can fasten the nut 3 when rotating, and the nut snap ring 803 can slide downwards along with the nut 3, and the lifting column 804 is driven to slide downwards in the lifting groove 805, so that the automatic fastening of the nut 3 is completed.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, but is capable of various changes and modifications without departing from the spirit and scope of the utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hydraulic pressure bolt stretcher stretching mechanism, includes by fixed object (1), its characterized in that: the inside of being fixed thing (1) is pegged graft and is had bolt (2), the surface threaded connection of bolt (2) has nut (3), pneumatic cylinder (4) have been placed to the upper surface of being fixed thing (1), bolt (2) are located the inside of pneumatic cylinder (4), the inside of pneumatic cylinder (4) is pegged graft and is had screw thread stretching head (5), the inside at screw thread stretching head (5) is pegged graft to bolt (2) screw thread, the surface of screw thread stretching head (5) and the upper surface contact of pneumatic cylinder (4), holding tank (6) have been seted up to the inner wall of pneumatic cylinder (4), logical groove (7) have been seted up to the surface of pneumatic cylinder (4), the inside of holding tank (6) is equipped with fastening mechanism (8), one side of screw thread stretching head (5) is equipped with power unit (9), the inside of pneumatic cylinder (4) is equipped with stop gear (10).

2. The hydraulic bolt tensioner tensioning mechanism of claim 1, wherein: the fastening mechanism (8) comprises a rotating ring (801) sleeved on the outer surface of the nut (3), the bottom surface of the rotating ring (801) is in contact with the upper surface of a fixed object (1), teeth (802) which are uniformly distributed circumferentially are fixedly connected to the outer surface of the rotating ring (801), and the teeth (802) are located in the accommodating groove (6).

3. The hydraulic bolt tensioner tensioning mechanism of claim 2, wherein: the inner wall sliding connection of swivel becket (801) has nut snap ring (803), nut snap ring (803) cup joints the surface at nut (3), the surface fixedly connected with lift post (804) of nut snap ring (803), lift groove (805) have been seted up to the upper surface of swivel becket (801), lift post (804) slip grafting is in the inside of lift groove (805).

4. A hydraulic bolt tensioner tensioning mechanism according to claim 3, wherein: the bottom fixedly connected with spring (806) of lift post (804), the bottom of spring (806) is fixedly connected with interior bottom wall of lift groove (805), interior bottom wall fixedly connected with gag lever post (807) of lift groove (805), the bottom surface of lift post (804) is run through in the top slip of gag lever post (807), spring (806) cup joints the surface at gag lever post (807).

5. The hydraulic bolt tensioner tensioning mechanism of claim 2, wherein: the power mechanism (9) comprises a fixed plate (901) fixedly connected to the outer surface of the hydraulic cylinder (4), a rotating shaft (902) is rotatably connected to the inside of the fixed plate (901), a motor (903) is fixedly connected to the top end of the rotating shaft (902), and the outer surface of the motor (903) is fixedly connected with the outer surface of the hydraulic cylinder (4).

6. The hydraulic bolt tensioner tensioning mechanism of claim 5, wherein: one end of the rotating shaft (902) far away from the motor (903) is fixedly connected with a gear (904), and the gear (904) penetrates through the groove (7) and is meshed with the teeth (802).

7. The hydraulic bolt tensioner tensioning mechanism of claim 2, wherein: the limiting mechanism (10) comprises an annular limiting groove (1001) formed in the inner wall of the hydraulic cylinder (4), and a limiting ring (1002) is rotatably connected to the inner wall of the annular limiting groove (1001).

8. The hydraulic bolt tensioner tensioning mechanism of claim 7, wherein: the outer surface of the limiting ring (1002) is fixedly connected with a connecting block (1003), and the bottom surface of the connecting block (1003) is fixedly connected with the upper surface of the rotating ring (801).