CN220870736U - Emergency lighting lamp - Google Patents

Abstract

The utility model discloses an emergency lighting lamp, comprising: the box body is provided with a fixing seat at the top end of the box body, an illuminating lamp body is arranged at the top end of the fixing seat, and a fixing bottom plate is arranged on one side of the box body; the mounting mechanism is arranged at one side of the box body close to the fixed bottom plate and used for mounting the box body; the adjusting mechanism is arranged at the top end of the box body and at a position corresponding to the fixing seat, and is used for adjusting the angle of the illuminating lamp body. According to the emergency lighting lamp provided by the utility model, the box body can be quickly installed and detached through the structural design of the installation mechanism, so that the working efficiency of the device in maintenance and cleaning is improved, meanwhile, the angle of the lighting lamp body can be adjusted without an external tool through the structural design of the adjustment mechanism, the labor intensity of labor personnel is reduced, the complexity of operation is reduced, and the practicability of the device is improved.

Description

Emergency lighting lamp

Technical Field

The utility model relates to the technical field of lighting lamps, in particular to an emergency lighting lamp.

Background

The fire emergency lighting lamp is when taking place emergency, for the safety, can cut off the power supply with the circuit that uses, and after the circuit that uses cuts off the power supply, can lead to the space to become dark, is unfavorable for personnel's evacuation, consequently, fire emergency lighting lamp can start the illumination after the circuit that uses cuts off the power supply for indicate the road, the evacuation of personnel of being convenient for.

As disclosed in chinese patent (CN 217302633U), an emergency fire-fighting lamp is described in which: the box body can be conveniently and quickly disassembled through the mutual matching of the rectangular fixing blocks, the rectangular slots, the rectangular side blocks, the movable plates, the pull rings, the rectangular inserting blocks, the limiting sliding grooves, the limiting sliding blocks and the reset springs, the disassembly can be quickly completed when maintenance or cleaning is needed, the operation is convenient, the time is saved, and the installation and the reset are convenient, and the box body is also recorded; "directly fix through the bolt, comparatively loaded down with trivial details when dismantling maintenance or clean, can not accomplish the dismantlement fast, the practicality is relatively poor.

In summary, the following technical problems exist in the prior art: the existing device is mostly fixed directly through bolts, is complicated in disassembly and maintenance or cleaning, cannot be quickly disassembled, is poor in practicality, and meanwhile, when the angle of the illuminating lamp is required to be adjusted, the nut is required to be loosened to swing the illuminating lamp for angle adjustment, so that the operation is complicated, and when the bolts and the nuts are loosened, the emergency illuminating lamp is provided for solving the technical problems in the prior art.

Disclosure of utility model

Based on this, it is necessary to provide an emergency lighting lamp to the above-mentioned technical problem, through the structural design of installation mechanism for can be quick install the box with dismantle, thereby promoted the work efficiency when maintaining the cleanness to the device, simultaneously through adjustment mechanism's structural design, make need not to carry out angle modulation through external instrument can the illumination lamp body, reduced staff's intensity of labour, reduced the loaded down with trivial details nature of operation, increased the practicality of device.

In order to solve the technical problems, the utility model adopts the following technical scheme:

An emergency lighting lamp is applied to emergency lighting.

The emergency lighting lamp specifically comprises:

the box body is characterized in that a fixed seat is fixed at the top end of the box body, an illuminating lamp body is arranged at the top end of the fixed seat, and a fixed bottom plate is arranged on one side of the box body;

The mounting mechanism is arranged at one side of the box body close to the fixed bottom plate and used for mounting the box body;

The adjusting mechanism is arranged at the top end of the box body and at a position corresponding to the fixing seat, and is used for adjusting the angle of the illuminating lamp body.

As a preferred implementation mode of the emergency lighting lamp provided by the utility model, the mounting mechanism comprises a connecting block, the connecting block is arranged at one side position of the box body close to the fixed bottom plate, the connecting block is fixedly connected with the box body, a connecting plate is fixed at the position of the fixed bottom plate corresponding to the connecting block, the connecting block is in sliding connection with the connecting plate, and a limiting component is arranged at the inner side of one end of the connecting block.

As a preferred implementation mode of the emergency lighting lamp provided by the utility model, the limiting component comprises a rotating rod, the rotating rod is longitudinally arranged at the inner side position of one end of the connecting block, the rotating rod is rotationally connected with the connecting block, one end of the rotating rod extends to the outer side of one end of the connecting block, a rotating bolt is fixed at one end of the rotating rod, which is positioned at the outer side of the connecting block, a gear is fixed at the other end of the rotating rod, moving blocks are vertically arranged at two sides of the gear, the moving blocks are in sliding connection with the connecting block, a rack is fixed at one side, close to the gear, of the moving blocks, the rack is in meshed connection with the gear, a limiting bolt is fixed at one end, far away from the gear, of the moving blocks, a clamping groove is formed at the position, corresponding to the limiting bolt, of the connecting plate, and the limiting bolt is connected with the connecting plate through the clamping groove.

As a preferred implementation mode of the emergency lighting lamp provided by the utility model, the adjusting mechanism comprises a connecting shaft, the connecting shaft is transversely arranged at the inner side of the fixed seat, the connecting shaft is rotationally connected with the fixed seat, a connecting seat is fixed at the outer side of the connecting shaft, a connecting column is fixed at the top end of the connecting seat, the connecting column is fixedly connected with the lighting lamp body, and an adjusting component is arranged at the inner side of one end of the connecting shaft.

As a preferred embodiment of the emergency lighting lamp provided by the utility model, the adjusting component comprises a rotating shaft, the rotating shaft is arranged at the inner side position of one end of the connecting shaft, the rotating shaft is in sliding connection with the connecting shaft, a rotating handle is fixed at one end of the rotating shaft far away from the connecting shaft, a connecting component is arranged at the inner side of one end of the connecting shaft close to the rotating shaft, and an anti-rotating component is arranged at the position of the rotating shaft close to the fixed seat.

As a preferred implementation mode of the emergency lighting lamp provided by the utility model, the connecting assembly comprises a spring, the spring is arranged at the inner side position of one end of the connecting shaft, which is close to the rotating shaft, one end of the spring is fixedly connected with the connecting shaft, the other end of the spring is fixedly connected with the rotating shaft, sliding blocks are fixed on two sides of one end of the rotating shaft, which is close to the spring, and the sliding blocks are in sliding connection with the connecting shaft.

As a preferred implementation mode of the emergency lighting lamp provided by the utility model, the anti-rotation component comprises two fixing plates, the two fixing plates are respectively arranged at the upper end and the lower end of the fixing seat, which are close to one end of the rotating shaft, the fixing plates are fixedly connected with the fixing seat, an anti-rotation ring is arranged at the position between the two fixing plates, the anti-rotation ring is fixedly connected with the fixing plates through a fixing block, a limiting ring is fixed at the position, which corresponds to the anti-rotation ring, on the outer side of the rotating shaft, and the limiting ring is in meshed connection with the anti-rotation ring.

Compared with the prior art, the utility model has the following beneficial effects:

According to the emergency lighting lamp provided by the utility model, the box body can be quickly installed and detached through the structural design of the installation mechanism, so that the working efficiency of the device in maintenance and cleaning is improved, meanwhile, the angle of the lighting lamp body can be adjusted without an external tool through the structural design of the adjustment mechanism, the labor intensity of labor personnel is reduced, the complexity of operation is reduced, and the practicability of the device is improved.

Drawings

In order to more clearly illustrate the solution of the present utility model, a brief description will be given below of the drawings required for the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of an emergency lighting lamp provided by the utility model;

FIG. 2 is a schematic diagram of a connection structure between an emergency lighting lamp connection block and a connection plate provided by the utility model;

FIG. 3 is a schematic view of an emergency light stop assembly according to the present utility model;

FIG. 4 is an enlarged view of the emergency light provided by the present utility model at A in FIG. 3;

FIG. 5 is a schematic view of an emergency light adjustment mechanism according to the present utility model;

FIG. 6 is a schematic view of an emergency light connection assembly according to the present utility model;

fig. 7 is a schematic structural view of an anti-rotation assembly of an emergency lighting lamp provided by the utility model.

The labels in the figures are illustrated below:

1. A case; 2. a fixed bottom plate; 3. a lighting lamp body; 4. a fixing seat; 5. a mounting mechanism; 6. an adjusting mechanism; 7. a connecting block; 8. a connecting plate; 9. a rotating lever; 10. rotating the bolt; 11. a gear; 12. a rack; 13. a moving block; 14. a limit bolt; 15. a connecting seat; 16. a connecting column; 17. a rotating shaft; 18. rotating the handle; 19. a fixing plate; 20. a fixed block; 21. an anti-rotation ring; 22. a connecting shaft; 23. a limiting ring; 24. a spring; 25. a sliding block.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

As described in the background art, most of the existing devices are directly fixed through bolts, so that the existing devices are complicated in disassembly and maintenance or cleaning, disassembly cannot be completed quickly, the practicability is poor, meanwhile, when angle adjustment is required to be performed on the illumination lamp, the angle adjustment is required to be performed on the illumination lamp by loosening the nuts, and thus the operation is complicated, and meanwhile, the bolts and the nuts are loosened.

In order to solve the technical problem, the utility model provides an emergency lighting lamp which is applied to emergency lighting.

Referring specifically to fig. 1 to 7, the emergency lighting lamp specifically includes:

The box body 1, the top of the box body 1 is fixed with a fixed seat 4, the top of the fixed seat 4 is provided with an illuminating lamp body 3, and one side of the box body 1 is provided with a fixed bottom plate 2;

The mounting mechanism 5 is arranged at one side of the box body 1 close to the fixed bottom plate 2 and is used for mounting the box body 1;

And the adjusting mechanism 6 is arranged at the top end of the box body 1 and at a position corresponding to the fixed seat 4, and is used for adjusting the angle of the illuminating lamp body 3.

According to the emergency lighting lamp provided by the utility model, the box body 1 can be quickly installed and detached through the structural design of the installation mechanism 5, so that the working efficiency of the device in maintenance and cleaning is improved, meanwhile, the angle of the lighting lamp body 3 can be adjusted without an external tool through the structural design of the adjusting mechanism 6, the labor intensity of labor personnel is reduced, the complexity of operation is reduced, and the practicability of the device is improved.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1:

Referring to fig. 1-4, an emergency lighting lamp, comprising: the box body 1, the top of the box body 1 is fixed with a fixed seat 4, the top of the fixed seat 4 is provided with an illuminating lamp body 3, and one side of the box body 1 is provided with a fixed bottom plate 2;

The mounting mechanism 5 is arranged at one side of the box body 1 close to the fixed bottom plate 2 and is used for mounting the box body 1;

The mounting mechanism 5 comprises a connecting block 7, wherein the connecting block 7 is arranged at one side position of the box body 1, which is close to the fixed bottom plate 2, the connecting block 7 is fixedly connected with the box body 1, a connecting plate 8 is fixed at the position of the fixed bottom plate 2, which corresponds to the connecting block 7, the connecting block 7 is in sliding connection with the connecting plate 8, the box body 1 is connected with the fixed bottom plate 2 through the connecting block 7 and the connecting plate 8, and a limiting component is arranged at the inner side of one end of the connecting block 7, so that the connecting block 7 is limited through the limiting component, and the connecting block 7 is prevented from sliding out of the connecting plate 8;

Specifically, spacing subassembly includes with dwang 9, dwang 9 vertically sets up in the inboard position department of one end of connecting block 7, dwang 9 rotates with connecting block 7 to be connected, the one end of dwang 9 extends to the one end outside of connecting block 7, the one end that dwang 9 is located the connecting block 7 outside is fixed with rotation bolt 10, make through rotating rotation bolt 10 drive dwang 9 rotation, the other end of dwang 9 is fixed with gear 11, make the dwang 9 can drive gear 11 rotation when rotating, the both sides of gear 11 are all vertically provided with movable block 13, movable block 13 and connecting block 7 sliding connection, one side that movable block 13 is close to gear 11 is fixed with rack 12, rack 12 and gear 11 meshing are connected, make movable block 13 move through rack 12 when gear 11 rotates, the one end that gear 11 was kept away from to movable block 13 is fixed with spacing bolt 14, make movable block 13 move when driving spacing bolt 14, the draw-in groove has been seted up through the draw-in groove to the corresponding position department of connecting plate 8 and spacing bolt 14, spacing bolt 14 is connected through the draw-in groove, make spacing bolt 14 carry out spacing to connecting block 7.

It can be known that when the box 1 is installed, the box 1 is fixed on a wall body through the bolts, then the connecting block 7 slides into the inner side of the connecting plate 8, then the rotating bolt 10 is rotated through an external tool, the rotating rod 9 is driven to rotate when the rotating bolt 10 rotates, the rotating rod 9 drives the gear 11 to rotate, the moving block 13 is driven to move in the direction away from the gear 11 through the rack 12 meshed with the gear 11 when the gear 11 rotates, the moving block 13 drives the limit bolt 14 to move simultaneously, when the limit bolt 14 moves to the inner side of the clamping groove, the limit effect on the connecting block 7 can be achieved through the limit bolt 14, so that the box 1 is installed, the rotating bolt 10 is reversely rotated when the box is disassembled, the limit bolt 14 moves out of the inner side of the clamping groove, the limit of the connecting block 7 is canceled, the box 1 can be removed, the operation is completed, the box 1 can be quickly installed and disassembled, the work efficiency of the box is improved when the box is maintained and cleaned, and the practicability of the box is improved.

Example 2:

Further optimizing the emergency lighting lamp provided in embodiment 1, specifically, as shown in fig. 5 to 7, an adjusting mechanism 6 is provided at the top end of the case 1 at a position corresponding to the fixing base 4 for performing angle adjustment with respect to the lighting lamp body 3;

the adjusting mechanism 6 comprises a connecting shaft 22, the connecting shaft 22 is transversely arranged at the inner side of the fixed seat 4, the connecting shaft 22 is rotationally connected with the fixed seat 4, a connecting seat 15 is fixed at the outer side of the connecting shaft 22, the connecting seat 15 can be driven to rotate when the connecting shaft 22 rotates, a connecting column 16 is fixed at the top end of the connecting seat 15, the connecting column 16 is fixedly connected with the illuminating lamp body 3, the illuminating lamp body 3 is driven to rotate through the connecting column 16 when the connecting seat 15 rotates, and an adjusting component is arranged at the inner side of one end of the connecting shaft 22, so that the connecting shaft 22 is driven to rotate through the adjusting component;

Specifically, the adjusting component comprises a rotating shaft 17, the rotating shaft 17 is arranged at the inner side of one end of the connecting shaft 22, the rotating shaft 17 is in sliding connection with the connecting shaft 22, a rotating handle 18 is fixed at one end of the rotating shaft 17 far away from the connecting shaft 22, so that the rotating shaft 17 is driven to rotate by rotating the rotating handle 18, the connecting component is arranged at the inner side of one end of the connecting shaft 22 close to the rotating shaft 17, the connecting shaft 22 is driven to rotate by the connecting component when the rotating shaft 17 rotates, and an anti-rotation component is arranged at the position of the rotating shaft 17 close to the fixing seat 4, so that the rotating shaft 17 is limited by the anti-rotation component, and the rotating shaft 17 is prevented from rotating due to external force;

Further, the connecting assembly comprises a spring 24, so that the rotating shaft 17 is limited by the spring 24, the rotating shaft 17 is prevented from sliding back and forth inside the connecting shaft 22, the spring 24 is arranged at the position, close to the inner side of one end of the rotating shaft 17, of the connecting shaft 22, one end of the spring 24 is fixedly connected with the connecting shaft 22, the other end of the spring 24 is fixedly connected with the rotating shaft 17, sliding blocks 25 are fixed on two sides, close to one end of the spring 24, of the rotating shaft 17, so that the connecting shaft 22 is driven to rotate by the sliding blocks 25 when the rotating shaft 17 rotates, and the sliding blocks 25 are in sliding connection with the connecting shaft 22;

Still further, prevent changeing the subassembly including two fixed plates 19, two fixed plates 19 set up respectively at the upper and lower both ends that fixing base 4 is close to axis of rotation 17 one end, fixed plate 19 and fixing base 4 fixed connection, the position department between two fixed plates 19 is provided with prevents swivel 21, prevent swivel 21 through fixed block 20 and fixed connection of fixed plate 19, the outside of axis of rotation 17 and the position department corresponding with prevent swivel 21 is fixed with spacing ring 23, spacing ring 23 is connected with prevent swivel 21 meshing for the meshing through spacing ring 23 and prevent swivel 21 is connected and is spacing axis of rotation 17, avoids axis of rotation 17 to take place to rotate.

Through the above-mentioned structural design, when needs are to be illuminated lamp body 3 carries out the angle modulation, at first, the pulling rotates handle 18 to the direction that keeps away from fixing base 4, make the rotation handle 18 drive axis of rotation 17 remove, drive slider 25 and spacing ring 23 simultaneously remove when axis of rotation 17 removes, when spacing ring 23 removes to breaking away from with anti-rotation ring 21, then the rotation spacing to spacing ring 23 is cancelled to anti-rotation ring 21, then through rotating handle 18, make rotation handle 18 drive axis of rotation 17 rotate, axis of rotation 17 drives connecting axle 22 through slider 25 and rotates, connecting axle 22 rotates, thereby connecting axle 15 drives the lamp body 3 through spliced pole 16 and rotates with connecting axle 22 as the center, can illuminate lamp body 3 and carry out the angle modulation, after the regulation is accomplished, loosen rotation handle 18, make and drive axis of rotation 17 to be close to the direction removal of spring 24 under the elastic action of spring 24, simultaneously drive spacing ring 23 moves to the inboard of anti-rotation ring 21, accomplish spacing ring 23, can place the rotation axis of rotation 17 because of the connecting axle 22 rotates, can place the lamp body 3 through the spliced pole 16 and rotate, thereby the practicality is reduced, can be adjusted to the outside the illumination lamp body 3 has been accomplished, and the practicality is reduced, and the operator is convenient for use has been adjusted.

The emergency lighting lamp provided by the utility model has the following using process: when the box body 1 is installed, the box body 1 is fixed on a wall body through bolts, then the connecting block 7 is slid into the inner side of the connecting plate 8, then the rotating bolt 10 is rotated through an external tool, when the rotating bolt 10 is rotated, the rotating rod 9 is driven to rotate, the rotating rod 9 drives the gear 11 to rotate, the gear 11 drives the moving block 13 to move away from the gear 11 through the rack 12 meshed with the gear 11 when rotating, the moving block 13 drives the limit bolt 14 to move simultaneously, when the limit bolt 14 moves into the inner side of the clamping groove, the limit effect on the connecting block 7 can be achieved through the limit bolt 14, so that the box body 1 is installed, when the box body 1 is disassembled, the rotating bolt 10 is reversely rotated, the limit bolt 14 is moved out from the inner side of the clamping groove, the limit of the connecting block 7 is canceled, the box body 1 can be taken down, and when the angle of the lighting lamp body 3 is required to be adjusted, firstly, the rotating handle 18 is pulled in a direction away from the fixed seat 4, so that the rotating handle 18 drives the rotating shaft 17 to move, the sliding block 25 and the limiting ring 23 are driven to move simultaneously when the rotating shaft 17 moves, when the limiting ring 23 moves to be separated from the anti-rotating ring 21, the anti-rotating ring 21 cancels the rotation limiting of the limiting ring 23, then the rotating handle 18 drives the rotating shaft 17 to rotate through rotating the rotating handle 18, the rotating shaft 17 drives the connecting shaft 22 to rotate through the sliding block 25, the connecting shaft 22 drives the connecting seat 15 to rotate when rotating, the connecting seat 15 drives the illuminating lamp body 3 to rotate by taking the connecting shaft 22 as a center through the connecting column 16, the angle of the illuminating lamp body 3 can be adjusted, after the adjustment is finished, the rotating handle 18 is released, the rotating shaft 17 is driven to move towards a direction close to the spring 24 under the elastic action of the spring 24, meanwhile, the limiting ring 23 is driven to move towards the direction close to the anti-rotating ring 21, the limiting ring 23 moves to the inner side of the anti-rotating ring 21, limiting of the limiting ring 23 is completed, the rotating shaft 17 can be placed to rotate due to external force, and therefore adjustment work of the illuminating lamp body 3 is completed, and operation can be completed.

Claims (5)

1. An emergency light, comprising:

The illuminating lamp comprises a box body (1), wherein a fixing seat (4) is fixed at the top end of the box body (1), an illuminating lamp body (3) is arranged at the top end of the fixing seat (4), and a fixing bottom plate (2) is arranged on one side of the box body (1);

The mounting mechanism (5) is arranged at one side position of the box body (1) close to the fixed bottom plate (2) and is used for mounting the box body (1);

The adjusting mechanism (6) is arranged at the top end of the box body (1) and at a position corresponding to the fixing seat (4), and is used for adjusting the angle of the illuminating lamp body (3);

The mounting mechanism (5) comprises a connecting block (7), wherein the connecting block (7) is arranged at one side position of the box body (1) close to the fixed bottom plate (2), the connecting block (7) is fixedly connected with the box body (1), a connecting plate (8) is fixed at the position of the fixed bottom plate (2) corresponding to the connecting block (7), the connecting block (7) is in sliding connection with the connecting plate (8), and a limiting component is arranged at the inner side of one end of the connecting block (7);

The utility model discloses a spacing subassembly, including with dwang (9), dwang (9) vertically set up the inboard position department of one end of connecting block (7), dwang (9) are connected with connecting block (7) rotation, the one end of dwang (9) extends to the one end outside of connecting block (7), the one end that dwang (9) is located the connecting block (7) outside is fixed with rotation bolt (10), the other end of dwang (9) is fixed with gear (11), the both sides of gear (11) are all vertically provided with movable block (13), one side that movable block (13) are close to gear (11) is fixed with rack (12), rack (12) and gear (11) meshing are connected, the one end that gear (11) were kept away from to movable block (13) is fixed with stop bolt (14), the draw-in groove has been seted up to the position department that connecting plate (8) and stop bolt (14) correspond, spacing bolt (14) are connected with connecting plate (8) through the draw-in groove.

2. The emergency lighting lamp according to claim 1, wherein the adjusting mechanism (6) comprises a connecting shaft (22), the connecting shaft (22) is transversely arranged at the inner side of the fixing seat (4), the connecting shaft (22) is rotationally connected with the fixing seat (4), a connecting seat (15) is fixed at the outer side of the connecting shaft (22), a connecting column (16) is fixed at the top end of the connecting seat (15), the connecting column (16) is fixedly connected with the lighting lamp body (3), and an adjusting component is arranged at the inner side of one end of the connecting shaft (22).

3. The emergency lighting lamp according to claim 2, wherein the adjusting assembly comprises a rotating shaft (17), the rotating shaft (17) is arranged at the inner side of one end of the connecting shaft (22), the rotating shaft (17) is slidably connected with the connecting shaft (22), a rotating handle (18) is fixed at one end of the rotating shaft (17) far away from the connecting shaft (22), a connecting assembly is arranged at the inner side of one end of the connecting shaft (22) near the rotating shaft (17), and an anti-rotating assembly is arranged at the position of the rotating shaft (17) near the fixing seat (4).

4. An emergency lighting lamp according to claim 3, wherein the connecting assembly comprises a spring (24), the spring (24) is arranged at the inner side position of one end of the connecting shaft (22) close to the rotating shaft (17), one end of the spring (24) is fixedly connected with the connecting shaft (22), the other end of the spring (24) is fixedly connected with the rotating shaft (17), sliding blocks (25) are fixed on two sides of one end of the rotating shaft (17) close to the spring (24), and the sliding blocks (25) are in sliding connection with the connecting shaft (22).

5. An emergency lighting lamp according to claim 3, wherein the anti-rotation component comprises two fixing plates (19), the two fixing plates (19) are respectively arranged at the upper end and the lower end of the fixing base (4) close to one end of the rotating shaft (17), the fixing plates (19) are fixedly connected with the fixing base (4), anti-rotation rings (21) are arranged at positions between the two fixing plates (19), the anti-rotation rings (21) are fixedly connected with the fixing plates (19) through fixing blocks (20), and limiting rings (23) are fixed at positions, which correspond to the anti-rotation rings (21), on the outer side of the rotating shaft (17), and the limiting rings (23) are in meshed connection with the anti-rotation rings (21).