CN211145151U

CN211145151U - Expansion coupling sleeve easy to screw

Info

Publication number: CN211145151U
Application number: CN201921900218.7U
Authority: CN
Inventors: 周明
Original assignee: Shanghai Kelan Transmission Equipment Co ltd
Current assignee: Shanghai Kelan Transmission Equipment Co ltd
Priority date: 2019-11-02
Filing date: 2019-11-02
Publication date: 2020-07-31
Anticipated expiration: 2029-11-02

Abstract

The utility model discloses an expand tight coupling sleeve of screwing up easily uses in the mechanical coupling field, has solved the trouble problem of bolt tightening. The technical key points are as follows: the inner ring and the outer ring are connected through a bolt, and a first gap is formed in the side wall of the inner ring; a second gap is formed in the side wall of the outer ring; a screwing component is arranged on the outer ring and comprises a shell, a rotating rod is arranged on the inner wall of the shell, a first bevel gear set is fixed on the rotating rod, a rotating shaft is arranged on the first bevel gear set, and the other end of the rotating shaft is positioned outside the shell; the rotating rod is connected with two second bevel gear sets in a sliding mode, the second bevel gear sets are fixedly connected with tightening heads through rod bodies, the shell is provided with two waist-shaped holes, the rod bodies penetrate through the waist-shaped holes, and the tightening heads are located outside the shell. Has the technical effects that: the bolt on a diagonal is screwed up by adding the screwing assembly, and partial manpower and time are saved.

Description

Expansion coupling sleeve easy to screw

Technical Field

The utility model relates to a mechanical connection technical field, more specifically say, it relates to an expand tight coupling sleeve of screwing up easily.

Background

An expansion coupling sleeve (expansion sleeve for short) is a new-generation advanced mechanical basic component. The novel keyless connection device is widely used for realizing connection of machine parts and shafts in the world at present, and load transmission is realized by tightening a 12.9-grade high-strength bolt to generate pressure and friction force between containing surfaces. The main function of the expansion coupling sleeve (expansion sleeve for short) is to replace the coupling function of single key and spline to realize the coupling of machine parts (such as gear, flywheel, belt pulley, etc.) and shaft for transmitting load.

Referring to fig. 1, a conventional expansion coupling sleeve includes an inner ring 1 and an outer ring 2 sleeved on the inner ring 1, wherein a first inclined surface is provided on an inner surface of the outer ring 2, a second inclined surface is provided on an outer surface of the inner ring 1, a plurality of bolts 12 are provided between the inner ring 1 and the outer ring 2, and the inner ring 1 and the outer ring 2 are connected together by the bolts 12. A first gap 11 is formed on the side wall of the inner ring 1; the side wall of the outer ring 2 is provided with a second gap 21, and a space for contraction and relaxation of the inner ring 1 and the outer ring 2 can be reserved in the process of tightly holding the expansion coupling sleeve by arranging the first gap 11 and the second gap 21 so as to deal with the damage of stress to metal. In use, the coupled member is pushed onto the shaft to a position specified by the design. The expanding sleeve for loosening the bolt is smoothly installed in the connecting hole to prevent the inclination of the combined part, and then the bolt is uniformly tightened in a diagonal and crossed manner by using a spanner.

The expansion coupling sleeve provided by the scheme needs to be uniformly screwed in the diagonal and crossed sequence during installation, only one bolt can be screwed each time, and the problem needs to be solved in a mode because the bolt is more troublesome to screw.

SUMMERY OF THE UTILITY MODEL

The loaded down with trivial details not enough during installation to prior art exists, the utility model aims to provide an expand and connect cover of screwing up easily, increase the mode of screwing up the subassembly, can make the bolt once tentatively screw up two diagonal bolts.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an expansion coupling sleeve easy to screw comprises an inner ring and an outer ring sleeved on the inner ring, wherein a first inclined plane is arranged on the inner surface of the outer ring, a second inclined plane is arranged on the outer surface of the inner ring, the inner ring and the outer ring are connected through a bolt, and a first gap is formed in the side wall of the inner ring; a second gap is arranged on the side wall of the outer ring; the outer ring is provided with a tightening assembly, the tightening assembly comprises a shell, a bearing on the inner wall of the shell is connected with a rotating rod, a first bevel gear set is fixed on the rotating rod, a rotating shaft is arranged on the first bevel gear set, and the other end of the rotating shaft penetrates through the shell and is positioned outside the shell; the rotary rod slides and is connected with two second bevel gear sets, and one side that second bevel gear set is close to the outer lane is equipped with two waist type holes through a body of rod fixedly connected with tightening head, the one end that the shell is close to the outer lane along the length direction of rotary rod, the body of rod passes waist type hole, tightening head are located the shell is outside.

Through the technical scheme, the rotation of the first bevel gear set is utilized to drive the two second bevel gear sets to rotate, and the second bevel gear sets rotate to drive the tightening heads to rotate so as to tighten the bolts. The beneficial effects obtained are as follows: the inner ring and the outer ring are preliminarily fixed by simultaneously preliminarily screwing the bolts on one diagonal line, so that the bolts are not required to be screwed by a worker one by one at the beginning, and the time and the labor for screwing the bolts one by one are saved.

Further setting: the first bevel gear set consists of a first driving gear and a first steering gear which are meshed with each other; the second bevel gear set is composed of a second driving gear and a second steering gear which are meshed with each other.

Further setting: first steering gear fixed mounting is on the rotary rod, and second drive gear and rotary rod key-type connection, and the coaxial first bearing that is equipped with of second drive gear one end, the coaxial second bearing that is equipped with of one end of second steering gear, fixed mounting has the connecting rod on the first bearing, connecting rod rigid coupling in second bearing.

The beneficial effects obtained are as follows: through setting up the connecting rod with first bearing and second bearing fixed connection, can guarantee under any circumstance that second drive gear and second steering gear all can the meshing be in the same place.

Further setting: the rotary rod is provided with a sliding block, the second driving gear is provided with a clamping groove, the sliding block is slidably arranged in the clamping groove, and the two ends of the sliding block are fixedly provided with fixing blocks.

The beneficial effects obtained are as follows: the inner ring retracts into the outer ring and expands when the bolt is tightened, the position of the bolt slightly changes, the tightening head is fixed on the bolt, the tightening head also changes in displacement, and the slide block and the clamping groove are arranged to allow a space for the sliding of the second driving gear.

Further setting: a first bearing sleeve is arranged on the first bearing; and a second bearing sleeve is arranged on the second bearing, one end of the connecting rod is fixedly arranged on the first bearing sleeve, and the other end of the connecting rod is fixedly arranged on the second bearing sleeve.

The beneficial effects obtained are as follows: the provision of the first and second bearing sleeves allows for a better mounting of the connecting rod.

Further setting: the tightening head is in a frustum pyramid shape.

The beneficial effects obtained are as follows: the setting is that the terrace with edge changes the nut that can cooperate on the bolt, realizes the butt to the nut, and the bolt is screwed up to convenient to use tightening head.

Further setting: the tightening head is provided with a magnetic block in the direction close to the nut.

The beneficial effects obtained are as follows: the bolts are convenient to take and store, the magnetic blocks can attract the bolts, and the bolts are convenient to be placed in the threaded holes of the inner ring and the outer ring together.

Further setting: the handle is installed to the one end that the outer lane was kept away from to the shell, handle and first drive gear fixed connection.

Further setting: the handle is the ring form, and the fixed mounting has many body of rod in the ring, and the body of rod separates a plurality of spaces with the ring.

The beneficial effects obtained are as follows: the handle is arranged to facilitate good force application when the bolt is tightened.

Further setting: the handle coat is provided with a protective sleeve.

The beneficial effects obtained are as follows: the hands of workers can be injured by excessive force during tightening, and the hands of the workers can be protected from injury by the protective sleeve.

To sum up, the utility model discloses following beneficial effect has:

1. the bolts on one diagonal line are screwed together through the screwing assembly, and the time and labor for screwing the bolts individually can be saved.

2. The magnetic block is arranged on the screwing head, so that the screw bolt can be simultaneously taken and inserted into the threaded holes of the outer ring and the inner ring when being installed or taken, the screw bolt does not need to be independently put into or taken out, and time and labor are saved.

3. The inner ring retracts into the outer ring and expands when the bolt is tightened, the position of the bolt slightly changes, the tightening head is fixed on the bolt, the tightening head also slightly changes in displacement, and the slide block and the clamping groove are arranged to allow a space for the sliding of the second driving gear.

Drawings

FIG. 1 is an exploded view of a prior art expansion coupling sleeve;

FIG. 2 is a schematic view showing the overall structure of an easily tightened expansion coupling sleeve;

FIG. 3 is a schematic view of the internal structure of the tightening assembly;

FIG. 4 is an exploded view of a second bevel gear set;

fig. 5 is a schematic structural view of the housing.

In the figure: 1. an inner ring; 11. a first slit; 12. a bolt; 2. an outer ring; 21. a second slit; 3. screwing the assembly; 31. a housing; 311. rotating the rod; 3111. a slider; 312. a kidney-shaped hole; 32. a handle; 321. a rod body; 33. a first bevel gear set; 331. a first drive gear; 3311. a fixed block; 332. a first steering gear; 34. a second bevel gear set; 341. a second drive gear; 3411. a first bearing sleeve; 3412. a card slot; 342. a second steering gear; 3421. a second bearing housing; 343. a connecting rod; 36. tightening a head; 361. a magnetic block.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

An expansion coupling sleeve easy to screw up is shown in figures 1 and 2 and comprises an inner ring 1 and an outer ring 2 sleeved on the inner ring 1, wherein a second gap 21 is formed in the outer ring 2, and a first inclined plane is arranged on the inner surface of the outer ring 2; the inner ring 1 is provided with a first gap 11, and the outer surface of the inner ring 1 is provided with a second inclined surface. The first gap 11 and the second gap 21 can be arranged to leave a space for the contraction and relaxation of the inner ring 1 and the outer ring 2 in the process of the tightening coupling sleeve, so as to deal with the damage of stress to metal.

A plurality of bolts 12 are arranged at one end of the inner ring 1, which is far away from the outer ring 2, in a penetrating manner, a plurality of threaded holes are formed at one end of the outer ring 2, which is close to the inner ring 1, the inner ring 1 and the outer ring 2 are connected together by the bolts 12, and the head of each bolt 12 is hollow and the hollow position of the bolt is in a hexagonal prism shape.

As shown in fig. 2 and 3, the outer ring 2 is sleeved with a tightening assembly 3, and the tightening assembly 3 includes a housing 31 and a handle 32. A rotating rod 311 is mounted on the inner wall of the housing 31 through a bearing, a first bevel gear set 33 and two second bevel gear sets 34 are further arranged in the housing 31, the first bevel gear set 33 is composed of a first driving gear 331 and a first steering gear 332, and the first driving gear 331 is meshed with the first steering gear 332; the second bevel gear set 34 is constituted by a second drive gear 341 and a second steering gear 342, and the second drive gear 341 and the second steering gear 342 are meshed. Wherein the second driving gear 341 is rotatably mounted on the rotating rod 311, and the first steering gear 332 is fixedly mounted on the rotating rod 311.

The handle 32 is fixedly mounted in a direction away from the outer ring 2 through the rod body and the first driving gear 331, and the rod body of the handle 32 penetrates through the shell 31. The first driving gear 331 is rotated by twisting the handle 32. Handle 32 is the ring form, and the welding has many body of rod 321 in the ring, and body of rod 321 will be separated into a plurality of fan-shapes by the ring, and the fan-shape of separating helps the staff to screw up the handle, and still overlaps on handle 32 to be equipped with the protective sheath, and the protective sheath can protect the staff not receive the injury of handle 32 frictional force when screwing up the bolt.

As shown in fig. 3 and 4, in order to match the contraction and expansion intervals of the inner ring 1 and the outer ring 2, the second bevel gear set 34 may rotate on the rotating rod 311 or may slide on the rotating rod 311. The second driving gear 341 has a sliding space on the rotating rod 311, the rotating rod 311 is provided with a slider 3111, and the length of the slider 3111 is greater than the contact length of the second driving gear 341 and the rotating rod 311. A clamping groove 3412 is further arranged on a connecting port of the second driving gear 341 in rotary connection with the rotating rod 311, the clamping groove 3412 penetrates through the second driving gear 341 and is in parallel cut-off communication with the connecting port, and the sliding block 3111 is slidably mounted in the clamping groove 3412.

The fixing blocks 3311 are installed at both ends of the sliding block 3111, the fixing blocks 3311 are fixedly installed on the rotating rod 311, and the fixing blocks 3311 prevent the second driving gear 341 from sliding too long on the rotating rod 311 to be screwed down on the bolt 12.

A first bearing is fixedly connected to a side of the second driving gear 341 away from the second steering gear 342, and a first bearing sleeve 3411 is sleeved on the first bearing. A second bearing is fixedly installed on the second steering gear 342 in a direction close to the outer ring 2, a second bearing sleeve 3421 is sleeved on the second bearing, a connecting rod 343 is fixedly connected between the first bearing sleeve 3411 and the second bearing sleeve 3421, the connecting rod 343 can ensure that the second driving gear 341 and the second steering gear 342 are always kept in a meshed state, and when the second steering gear 342 slides on the rotating rod 311, the connecting rod 343 can drive the second driving gear 341 to slide together. Since the second steering gear 342 can slide and the tightening head 36 is fixedly connected with the second steering gear 342, referring to fig. 5, two kidney-shaped holes 312 are provided along the length direction of the connecting rod 343 on the side of the housing 31 close to the outer ring 2, and the kidney-shaped holes 312 allow the tightening head 36 to slide when tightening.

As shown in fig. 3 and 4, the second steering gear 342 is fixedly provided with the tightening head 36, the tightening head 36 is in a hexagonal frustum shape and is in fit engagement with the head of the bolt 12, the magnetic block 361 is fixedly arranged in the direction in which the tightening head 36 is close to the bolt 12, the magnetic block 361 can attract the bolt 12, the bolt 12 can be attracted by the magnetic block 361 before the bolt 12 is screwed into the threaded openings of the inner ring 1 and the outer ring 2, and then the bolt 12 can be screwed into the threaded opening, so that the step of putting the bolts 12 into the threaded opening one by one is omitted, and manpower is saved.

Since the first steering gear 332 is engaged with the first driving gear 331, the first steering gear 332 rotates as the first driving gear 331 rotates; since the first steering gear 332 and the rotating lever 311 are fixedly installed, the rotating lever 311 and the first steering gear 332 rotate at the same time; the second driving gear 341 is rotatably mounted on the rotating rod 311, so that the rotating rod 311 drives the second driving gear 341 to rotate; since the second driving gear 341 is engaged with the second steering gear 342, the second driving gear 341 can bring the tightening head 36 to tighten the bolt.

When the bearing is used, the inner ring 1 is sleeved on the bearing, the outer ring 2 is sleeved on the inner ring 1, the bolt 12 is adsorbed by the tightening head 36, the bolt 12 is inserted into the threaded holes of the inner ring 1 and the outer ring 2, the handle 32 on the tightening assembly 3 is rotated to preliminarily tighten the bolt 12, and after the bolt 12 is screwed into a part, the bolts are manually screwed into a final state one by one.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An expansion connecting sleeve easy to screw comprises an inner ring (1) and an outer ring (2) sleeved on the inner ring (1), wherein a first inclined plane is arranged on the inner surface of the outer ring (2), a second inclined plane is arranged on the outer surface of the inner ring (1), the inner ring (1) and the outer ring (2) are connected through a bolt (12), and a first gap (11) is formed in the side wall of the inner ring (1); a second gap (21) is arranged on the side wall of the outer ring (2);

the method is characterized in that: the outer ring (2) is provided with a screwing component (3), the screwing component (3) comprises a shell (31), the inner wall of the shell (31) is in bearing connection with a rotating rod (311), a first bevel gear set (33) is fixed on the rotating rod (311), a rotating shaft is arranged on the first bevel gear set (33), and the other end of the rotating shaft penetrates through the shell (31) and is located outside the shell (31);

rotary rod (311) slide and are connected with two second bevel gear sets (34), second bevel gear set (34) are close to one side of outer lane (2) is through a body of rod fixedly connected with screw up head (36), shell (31) are close to the one end of outer lane (2) is followed the length direction of rotary rod (311) is equipped with two waist type holes (312), the body of rod passes waist type hole (312), screw up head (36) are located shell (31) outside.

2. An easily tightened expansion coupling sleeve according to claim 1, wherein: the first bevel gear set (33) is composed of a first driving gear (331) and a first steering gear (332) which are meshed with each other; the second bevel gear set (34) is composed of a second drive gear (341) and a second steering gear (342) that mesh with each other.

3. An easily tightened expansion coupling sleeve according to claim 2, wherein: first steering gear (332) fixed mounting be in on rotary rod (311), second drive gear (341) with rotary rod (311) key-type connection, just second drive gear (341) one end is coaxial to be equipped with first bearing, the coaxial second bearing that is equipped with of one end of second steering gear (342), fixed mounting has connecting rod (343) on the first bearing, connecting rod (343) rigid coupling in the second bearing.

4. An easily tightened expansion coupling sleeve according to claim 2, wherein: install slider (3111) on rotary rod (311), be equipped with draw-in groove (3412) on second drive gear (341), slider (3111) slidable mounting be in draw-in groove (3412), the both ends fixed mounting of slider (3111) has fixed block (3311).

5. An easily tightened expansion coupling sleeve according to claim 3, wherein: a first bearing sleeve (3411) is mounted on the first bearing; a second bearing sleeve (3421) is mounted on the second bearing, one end of the connecting rod (343) is fixedly mounted on the first bearing sleeve (3411), and the other end of the connecting rod (343) is fixedly mounted on the second bearing sleeve (3421).

6. An easily tightened expansion coupling sleeve according to claim 1, wherein: the tightening head (36) is in a frustum pyramid shape.

7. An easily tightened expansion coupling sleeve according to claim 1, wherein: and a magnetic block (361) is arranged in the direction of the tightening head (36) close to the bolt (12).

8. An easily tightened expansion coupling sleeve according to claim 2, wherein: and a handle (32) is installed at one end, far away from the outer ring (2), of the shell (31), and the handle (32) is fixedly connected with the first driving gear (331).

9. An easily tightened expansion coupling sleeve according to claim 8, wherein: handle (32) are the ring form, and ring internal fixation installs many body of rod (321), a plurality of spaces are separated with the ring to body of rod (321).

10. An easily tightened expansion coupling sleeve according to claim 8, wherein: the handle (32) is sleeved with a protective sleeve.