CN217256036U

CN217256036U - Overhanging type stretcher

Info

Publication number: CN217256036U
Application number: CN202220417119.9U
Authority: CN
Inventors: 柴清顺; 祁光
Original assignee: Tianjin Lingke Engineering Technology Service Co ltd
Current assignee: Tianjin Lingke Engineering Technology Service Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-23
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to the technical field of bolt stretching, and discloses an overhanging type stretcher, which comprises a cylinder body, wherein the lower surface wall of the cylinder body is provided with three supporting legs, the inside of the cylinder body is provided with a stretching mechanism, the inside of the three supporting legs is provided with a rotating mechanism, the stretching mechanism comprises a threaded rod, the threaded rod is in threaded connection with the middle part of the inner surface wall of the cylinder body, one end of the threaded rod penetrates through the cylinder body and is fixedly connected with a pre-tightening nut, the other end of the threaded rod extends to the upper surface wall of the cylinder body and is fixedly connected with a fastening disc, when a hydraulic block rises under the action of an external hydraulic device, the rack is driven by a connecting rod to move, the rack drives a first gear to rotate, the first gear drives a second gear to rotate by a rotating rod, the second gear drives a fluted disc to rotate, the fluted disc drives a nut sleeve to rotate, thereby the device can realize the tightening of the nut when stretching, thereby improving the use efficiency of the device.

Description

Overhanging type stretcher

Technical Field

The utility model relates to a tensile art field of bolt specifically is an overhanging type stretcher.

Background

The bolt is an indispensable part for assembling in the mechanical field. The bolt typically includes a threaded rod and a nut. The locking mode of the screw and the nut is firmer and more stable than other fixing modes. The screw rods used in some large-scale equipment are thick and the nuts are large. The locking process of the screw and the nut is finished manually, and the labor intensity is high. Meanwhile, in large-scale equipment, a plurality of bolts are generally used for connecting and fixing parts. Therefore, when the bolts are fastened manually, the stress of each bolt is different, and the connection strength is affected. At present, a stretcher is adopted to pre-stretch the screws, and then the nuts are locked to keep the stress of each screw to be approximately the same.

The existing bolt stretcher is usually jacked up with a pre-tightening nut by a hydraulic cylinder when in use, the nut sleeve is screwed up through a handle, the use process is very complicated, people are not convenient to use, and the existing device cannot synchronously jack up and screw up, so that the work efficiency of the device is influenced.

Through setting up slewing mechanism, when the hydraulic block rose under the effect of external hydraulic means, driven the rack through the connecting rod and removed, the rack drove first gear revolve, and first gear passes through the dwang and drives second gear revolve, and the second gear drives the fluted disc and rotates, and the fluted disc drives the nut cover and rotates to make the device can realize screwing up the nut when tensile, thereby promoted the availability factor of device.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a formula of hanging stretcher possesses and makes the device can realize screwing up the nut in tensile simultaneously to promote advantages such as the availability factor of device, solved current device and can not make jack-up and screw up go on in step, influence the work efficiency's of device problem.

(II) technical scheme

For realize above-mentioned current device can not make jack-up and screw up go on in step, influence the work efficiency's of device purpose, the utility model provides a following technical scheme: a suspended stretcher comprises a cylinder body, wherein three supporting legs are arranged on the lower surface wall of the cylinder body, a stretching mechanism is arranged inside the cylinder body, rotating mechanisms are arranged inside the three supporting legs, each stretching mechanism comprises a threaded rod, the threaded rods are in threaded connection with the middle of the inner surface wall of the cylinder body, one end of each threaded rod penetrates through the cylinder body and is fixedly connected with a pretightening nut, the other end of each threaded rod extends to the upper surface wall of the cylinder body and is fixedly connected with a fastening disc, a first cavity is formed in the inner eccentric position of the cylinder body, a hydraulic block is slidably connected inside the first cavity, the upper surface wall of the hydraulic block extends to the upper surface wall of the cylinder body through a fixing rod and is fixedly connected with a top plate, the top plate corresponds to the lower surface wall of the fastening disc, a connecting pipe is fixedly communicated with one side wall of the first cavity, and the rotating mechanisms comprise second cavities, the vertical baffle that is provided with in inside of second cavity, the outer wall of baffle runs through to rotate and is connected with the dwang, the first gear of one end fixedly connected with of dwang, and other end fixedly connected with second gear, the meshing of second gear is connected with the fluted disc, the inner wall fixedly connected with nut sleeve of fluted disc, the lower table wall connection of hydraulic pressure piece has the connecting rod, the lower table wall and the fixedly connected with rack that the connecting rod runs through the cylinder body, the rack is connected with first gear engagement.

Preferably, a round hole is formed in the side wall of the fastening disc, and a handle is connected to the round hole in an internal thread mode.

Preferably, the inner sides of the three support legs are provided with first openings, and the first openings correspond to the fluted disc.

Preferably, a sealing ring is arranged in the first cavity and corresponds to the connecting rod.

Preferably, the supporting legs are internally provided with sliding grooves, and the sliding grooves correspond to the connecting rods.

Preferably, the upper surface wall of the cylinder body is provided with a second opening, and the second opening corresponds to the fixing rod.

Preferably, the middle part of the inner surface wall of the cylinder body is provided with an internal thread, and the internal thread corresponds to the threaded rod.

(III) advantageous effects

Compared with the prior art, the utility model provides an overhanging type stretcher possesses following beneficial effect:

1. according to the suspended stretcher, the rotating mechanism is arranged, when the hydraulic block ascends under the action of an external hydraulic device, the rack is driven to move through the connecting rod, the rack drives the first gear to rotate, the first gear drives the second gear to rotate through the rotating rod, the second gear drives the fluted disc to rotate, and the fluted disc drives the nut sleeve to rotate, so that the nut can be screwed down while the device is stretched, and the use efficiency of the device is improved;

2. this formula of hanging stretcher through setting up stretching mechanism, and connecting pipe in the stretching mechanism is connected through the hydraulic means with external, and the hydraulic oil injection after external hydraulic means will pressurize is in the first cavity to make the hydraulic block remove, the hydraulic block passes through the dead lever and drives the roof jack-up, and the roof drives the fastening disc jack-up, and the fastening disc passes through the threaded rod and drives the pretension nut and realize the drawing to the bolt, makes more swiftly convenient when tensile.

Drawings

Fig. 1 is a schematic view of an overall structure of an overhanging type stretcher according to the present invention;

fig. 2 is a cross-sectional view of the overall structure of an overhanging type stretcher provided by the utility model;

fig. 3 is a top view of a rotation mechanism of the hanging type stretcher according to the present invention.

In the figure: 1. a cylinder body; 2. supporting legs; 3. a stretching mechanism; 31. a threaded rod; 32. pre-tightening the nut; 33. a fastening plate; 34. a first cavity; 35. a hydraulic block; 36. a top plate; 37. a circular hole; 38. a connecting pipe; 4. a rotating mechanism; 41. a second cavity; 42. a partition plate; 43. rotating the rod; 44. a first gear; 45. a second gear; 46. a connecting rod; 47. a rack; 48. a fluted disc; 49. and a nut sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, a suspension type stretcher comprises a cylinder body 1, wherein three support legs 2 are arranged on the lower surface wall of the cylinder body 1, a stretching mechanism 3 is arranged inside the cylinder body 1, and rotating mechanisms 4 are arranged inside the three support legs 2;

referring to fig. 2, the stretching mechanism 3 includes a threaded rod 31, the threaded rod 31 is in threaded connection with the middle of the inner surface wall of the cylinder body 1, one end of the threaded rod 31 penetrates through the cylinder body 1 and is fixedly connected with a pre-tightening nut 32, the other end of the threaded rod extends to the upper surface wall of the cylinder body 1 and is fixedly connected with a fastening disc 33, a first cavity 34 is formed in the eccentric position inside the cylinder body 1, a hydraulic block 35 is slidably connected inside the first cavity 34, the upper surface wall of the hydraulic block 35 extends to the upper surface wall of the cylinder body 1 through a fixing rod and is fixedly connected with a top plate 36, the top plate 36 corresponds to the lower surface wall of the fastening disc 33, and a connecting pipe 38 is fixedly communicated with one side wall of the first cavity 34;

the stretching of the bolt can be realized through the stretching mechanism 3;

referring to fig. 2, further, a circular hole 37 is formed in the side wall of the fastening plate 33, and a handle is connected to the circular hole 37 through an internal thread, and the handle is matched with the circular hole 37, so that the fastening plate 33 can rotate conveniently.

Referring to fig. 2, further, a second opening is formed in the upper wall of the cylinder body 1, and the second opening corresponds to the fixing rod, and the second opening facilitates the movement of the fixing rod.

Referring to fig. 2, furthermore, an internal thread is formed in the middle of the inner surface wall of the cylinder body 1, and the internal thread corresponds to the threaded rod 31, so that the threaded rod 31 can rotate conveniently.

Referring to fig. 2-3, the rotating mechanism 4 includes a second cavity 41, a partition plate 42 is vertically disposed inside the second cavity 41, an outer wall of the partition plate 42 is rotatably connected with a rotating rod 43 in a penetrating manner, one end of the rotating rod 43 is fixedly connected with a first gear 44, the other end of the rotating rod 43 is fixedly connected with a second gear 45, the second gear 45 is engaged with a fluted disc 48, an inner wall of the fluted disc 48 is fixedly connected with a nut sleeve 49, a connecting rod 46 is connected to a surface wall of a lower surface wall of the hydraulic block 35, the connecting rod 46 penetrates through the lower surface wall of the cylinder body 1 and is fixedly connected with a rack 47, and the rack 47 is engaged with the first gear 44;

the nut can be rotated while the device is stretched by the rotating mechanism 4;

referring to fig. 1-2, further, the inner sides of the three support legs 2 are respectively provided with a first opening, and the first openings correspond to the toothed disc 48, and the first openings facilitate the rotation of the toothed disc 48.

Referring to fig. 2, a sealing ring is further disposed inside the first cavity 34, and the sealing ring corresponds to the connecting rod 46, so that the sealing property of the first cavity 34 can be improved by the sealing ring.

Referring to fig. 2, further, the supporting leg 2 is provided with a sliding groove therein, and the sliding groove corresponds to the connecting rod 46, and the sliding groove facilitates the sliding of the connecting rod 46.

The working principle is that when the device is used, firstly, the device is placed on a bolt needing to be stretched, a nut sleeve 49 is sleeved on a nut, a handle is connected with a round hole 37, a fastening disc 33 is rotated by the handle, the fastening disc 33 drives a pre-tightening nut 32 to be in threaded connection with the bolt through a threaded rod 31, then the pre-tightening nut is connected with an external hydraulic device through a connecting pipe 38, the external hydraulic device injects pressurized hydraulic oil into a first cavity 34, a hydraulic block 35 is lifted under the action of the hydraulic oil, the hydraulic block 35 drives a top plate 36 to jack up through a fixed rod, the top plate 36 drives the fastening disc 33 to jack up, the fastening disc 33 drives the pre-tightening nut 32 through the threaded rod 31 to stretch the bolt, meanwhile, the hydraulic block 35 drives a rack 47 to move when rising through a connecting rod 46, the rack 47 drives a first gear 44 to rotate, the first gear 44 drives a second gear 45 to rotate through the rotating rod 43, the second gear 45 drives the fluted disc 48 to rotate, and the fluted disc 48 drives the nut sleeve 49 to rotate, so that the nut can be screwed while the device is stretched, and the use efficiency of the device is improved.

In summary, in the suspended stretcher, by providing the rotating mechanism 4, when the hydraulic block 35 ascends under the action of the external hydraulic device, the connecting rod 46 drives the rack 47 to move, the rack 47 drives the first gear 44 to rotate, the first gear 44 drives the second gear 45 to rotate through the rotating rod 43, the second gear 45 drives the fluted disc 48 to rotate, the fluted disc 48 drives the nut sleeve 49 to rotate, so that the nut can be screwed down while the device is stretched, thereby improving the use efficiency of the device, by providing the stretching mechanism 3, the connecting pipe 38 in the stretching mechanism 3 is connected with the external hydraulic device through the fixing rod, the external hydraulic device injects pressurized hydraulic oil into the first cavity 34, so that the hydraulic block 35 moves, the hydraulic block 35 drives the top plate 36 to jack up through the fixing rod, the top plate 36 drives the fastening plate 33 to jack up, the fastening plate 33 drives the nut 32 through the threaded rod 31 to stretch the bolt, so that the stretching is more rapid and convenient.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A kind of overhanging type stretcher, including cylinder block (1), its characterized in that: the lower surface wall of the cylinder body (1) is provided with three supporting legs (2), a stretching mechanism (3) is arranged inside the cylinder body (1), and rotating mechanisms (4) are arranged inside the three supporting legs (2);

the stretching mechanism (3) comprises a threaded rod (31), the threaded rod (31) is in threaded connection with the middle of the inner surface wall of the cylinder body (1), one end of the threaded rod (31) penetrates through the cylinder body (1) and is fixedly connected with a pre-tightening nut (32), the other end of the threaded rod extends to the upper surface wall of the cylinder body (1) and is fixedly connected with a fastening disc (33), a first cavity (34) is formed in the inner eccentric position of the cylinder body (1), a hydraulic block (35) is connected to the inner part of the first cavity (34) in a sliding mode, the upper surface wall of the hydraulic block (35) extends to the upper surface wall of the cylinder body (1) through a fixing rod and is fixedly connected with a top plate (36), the top plate (36) corresponds to the lower surface wall of the fastening disc (33), and a connecting pipe (38) is fixedly communicated with one side wall of the first cavity (34);

slewing mechanism (4) include second cavity (41), the inside vertical baffle (42) that is provided with of second cavity (41), the outer wall through rotation of baffle (42) is connected with dwang (43), the first gear of one end fixedly connected with (44) of dwang (43), and other end fixedly connected with second gear (45), second gear (45) meshing is connected with fluted disc (48), the inner wall fixedly connected with nut cover (49) of fluted disc (48), the lower table wall of hydraulic block (35) is connected with connecting rod (46), lower table wall and the fixedly connected with rack (47) that cylinder body (1) was run through in connecting rod (46), rack (47) are connected with first gear (44) meshing.

2. A pendant stretcher according to claim 1 wherein: round hole (37) have been seted up to the lateral wall of fastening dish (33), and round hole (37) internal thread connection has the handle.

3. A pendant stretcher according to claim 1 wherein: first openings are formed in the inner sides of the three supporting legs (2), and correspond to the fluted disc (48).

4. A pendant stretcher according to claim 1 wherein: and a sealing ring is arranged in the first cavity (34) and corresponds to the connecting rod (46).

5. A pendant stretcher according to claim 1 wherein: the supporting legs (2) are internally provided with sliding grooves which correspond to the connecting rods (46).

6. A pendant according to claim 1, wherein: the upper surface wall of the cylinder body (1) is provided with a second opening, and the second opening corresponds to the fixing rod.

7. A pendant stretcher according to claim 1 wherein: an internal thread is formed in the middle of the inner surface wall of the cylinder body (1), and corresponds to the threaded rod (31).