Lifting device for smoke alarm

Abstract

The utility model discloses a lifting device for a smoke alarm, including an installation box, in which a driving member, a counting mechanism and a support rod are installed, the driving member is movably connected to a reel, a steel wire rope is wound around the reel, one end of the steel wire rope is in an S shape and sequentially passes around the counting mechanism and the support rod to connect with a fixing mechanism below the installation box; the fixing mechanism includes a shell, a first cavity is opened in the shell, a telescopic assembly is arranged in the first cavity, a circular groove connected to the first cavity is opened at the bottom of the shell, a plurality of groups of fixing members are arranged around the shell relative to the circular groove, the fixing members are movably connected to the telescopic assembly, and the fixing members are driven by the telescopic assembly to complete the clamping and fixing of the smoke alarm. The utility model controls the smoke alarm to descend, so that the maintenance personnel can check and quickly replace the smoke alarm only on the ground, thereby improving the maintenance efficiency of the smoke alarm and reducing the operation risk of the maintenance personnel.

Description

Technical Field

[0001] The utility model belongs to the technical field of induction equipment, and in particular relates to a lifting device for a smoke alarm. Background Art

[0002] Smoke alarm, also known as fire smoke alarm, smoke sensor, smoke inductor, etc., is powered by a bus. Multiple smoke alarms can be connected to the bus and communicate with the fire alarm controller to form an alarm system. This type of smoke alarm device is generally called a smoke detector.

[0003] Mining belt conveyors are mainly used for coal transportation in coal mines. A smoke alarm needs to be installed on the top for operational safety detection. Since a fire in a coal mining environment is very likely to cause a major safety accident, the smoke alarm needs to be checked daily. However, the smoke alarm is usually on the top of the wall or embedded in the installation groove of the top wall. When inspecting it, maintenance personnel need to climb up to a high place to disassemble, inspect, repair or replace the equipment, which is very inconvenient, and there are certain safety hazards in high-altitude operations. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting device for a smoke alarm, which can control the smoke alarm to descend so that maintenance personnel can check and quickly replace the smoke alarm only on the ground, thereby improving the maintenance efficiency of the smoke alarm and reducing the operating risks of the maintenance personnel.

[0005] The technical solution adopted by the utility model is that the lifting device for the smoke alarm includes an installation box, in which a driving member, a counting mechanism and a support rod are installed, the driving member is movably connected to a reel, a steel wire rope is wound around the reel, and one end of the steel wire rope is S-shaped and passes through the counting mechanism and the support rod in turn to be connected to a fixing mechanism below the installation box;

[0006] The fixing mechanism includes a shell, a first cavity is opened in the shell, a telescopic assembly is arranged in the first cavity, a circular groove connected with the first cavity is opened at the bottom of the shell, and a plurality of groups of fixing parts are arranged around the circular groove of the shell. The fixing parts are movably connected with the telescopic assembly, and the fixing parts are driven by the telescopic assembly to complete the clamping and fixing of the smoke alarm.

[0007] The utility model is also characterized in that:

[0008] The driving member includes a motor, the output shaft of the motor is connected to a transmission rod a, the transmission rod a is sleeved with the winding wheel, and one end of the transmission rod a away from the motor is movably connected to a support seat a fixed to the mounting box;

[0009] Both ends of the support rod are movably connected with a support seat c, and the bottom end of the support seat c is fixedly connected to the installation box.

[0010] The counting mechanism includes a driven rod, a steel wire rope passes through the driven rod and a support rod in sequence, two ends of the driven rod are movably connected to a support seat b fixedly connected to the installation box, and one end of the driven rod passes through the support seat b and is connected to a driving wheel, and the driving wheel is connected to the driven wheel through a transmission belt;

[0011] The driven wheel is fixed to one end of the transmission rod b, the transmission rod b and the driven rod are parallel to each other, the other end of the transmission rod b passes through the encoder support seat and is connected with an encoder, the transmission rod b is movably connected to the encoder support seat, and the encoder support seat is fixedly connected to the installation box.

[0012] The telescopic assembly includes a support platform, a connecting rod is vertically connected to the top of the support platform, a receiving groove b corresponding to the number of the fixing parts is opened at the bottom of the support platform, the receiving groove b is opened along the edge of the support platform toward the center, and a sliding groove is opened on the opposite side wall of the receiving groove b along the extension direction of the receiving groove b, and the movable connection between the support platform and the fixing part is realized through the sliding groove;

[0013] A cavity for accommodating the connecting rod is opened in the shell relative to the connecting rod, and the depth of the cavity is not less than the length of the connecting rod. Magnets a are respectively arranged on the top of the support platform relative to both sides of the connecting rod, and magnets b are arranged on the shell relative to magnet a, and magnet b is located in the first cavity.

[0014] A return spring a is sleeved on the outer side of the connecting rod, one end of the return spring a abuts against the support platform, and the other end abuts against the shell.

[0015] Several groups of fixing parts are distributed at equal angles along the circumference of the shell, and the fixing parts include a clamping block. A receiving groove a for accommodating the rotation of the clamping block is opened on the shell relative to the clamping block. The clamping block is movably connected to the shell through a pin a, and one end of the clamping block is movably connected to the support platform through a pin b, and both ends of the pin b are located in the slide groove.

[0016] An anti-slip protective layer is bonded to the clamping block.

[0017] A pressure rod is provided at the side wall of the shell relative to the attraction position of the two groups of magnets a and magnet b. The pressure rod passes through the side wall of the shell and is inserted into the first cavity. One end of the pressure rod located in the first cavity is fixedly connected with a wedge block, and the tip of the wedge block faces the attraction position of magnets a and magnet b.

[0018] A second cavity is opened on the side wall of the shell relative to the position of the pressure rod, and a return spring b is arranged in the second cavity, and the pressure rod passes through the return spring b; and a pressure ring is sleeved on the pressure rod, and the pressure ring is located in the second cavity, one end of the return spring b abuts against the pressure ring, and the other end abuts against the shell.

[0019] A sloped notch is provided on one side of the magnet b relative to the wedge-shaped block, and the sloped notch is located on the attraction surface with the magnet a.

[0020] The beneficial effects of the utility model are:

[0021] (1) The utility model uses a motor to drive a steel wire rope to move the smoke alarm up and down, so that operators can complete the maintenance work of the smoke alarm without climbing up; at the same time, in conjunction with the fixing mechanism, the clamping block is fixed in position by the suction of the magnet, thereby completing the clamping of the smoke alarm. When the smoke alarm needs to be disassembled, it is only necessary to press the pressure rod to insert the wedge block between the two magnets, so that the smoke alarm can be quickly taken out, which greatly improves the work efficiency of the operators.

[0022] (2) The lifting device for the smoke alarm of the utility model is also provided with a counting mechanism in the installation box. By recording the lowering length of the wire rope through an encoder, the working height of the smoke alarm can be accurately controlled without being affected by the height of the top plate in the environment to be detected, and the working height of the smoke alarm can be adjusted accordingly according to real-time needs.

[0023] (3) The magnet fixed on the shell in the lifting device of the smoke alarm of the utility model has an inclined notch on one side of the shell relative to the side wall of the shell, and the tip of the wedge block is opposite to the notch, so that when the pressure rod is pressed, the wedge block can be quickly inserted into the magnets attracted to each other on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the lifting device for smoke alarm of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a counting mechanism in a lifting device for a smoke alarm of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the fixing mechanism in the lifting device of the utility model for the smoke alarm;

[0027] Figure 4 It is a cross-sectional view of a fixing mechanism in a lifting device for a smoke alarm according to the utility model.

[0028] In the figure, 1. installation box, 2. motor, 3. transmission rod a, 4. winding wheel, 5. support seat a, 6. driven rod, 7. support seat b, 8. driving wheel, 9. driven wheel, 10. transmission belt, 11. encoder support seat, 12. encoder, 13. support rod, 14. support seat c, 15. wire rope, 16. counting mechanism, 17. fixing mechanism, 18. smoke alarm, 19. shell, 20. first cavity, 21. accommodating groove a, 22. clamping block, 23. pin a, 24. support table, 25. connecting rod, 26. reset spring a, 27. magnet a, 28. accommodating groove b, 29. slide groove, 30. pin b, 31. pressure rod, 32. reset spring b, 33. second cavity, 34. pressure ring, 35. wedge block, 36. transmission rod b, 37. magnet b. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] The utility model is used for a lifting device of a smoke alarm, such as Figure 1 As shown, it includes an installation box 1, in which a driving member, a counting mechanism 16 and a support rod 13 are installed, the driving member is movably connected to a reel 4, a steel wire rope 15 is wound around the reel 4, one end of the steel wire rope 15 is S-shaped and passes through the counting mechanism 16 and the support rod 13 in turn to be connected to a fixing mechanism 17 below the installation box 1;

[0032] The take-up wheel 4 is driven to rotate by the driving member, thereby realizing the line winding and unwinding, and driving the smoke alarm 18 fixed below the fixing mechanism 17 to move up and down.

[0033] Furthermore, the driving member includes a motor 2, the output shaft of the motor 2 is connected to a transmission rod a3, the transmission rod a3 is sleeved with the winding wheel 4, and one end of the transmission rod a3 away from the motor 2 is movably connected to a support seat a5 fixed to the installation box 1;

[0034] Both ends of the support rod 13 are movably connected with support seats c14, and the bottom end of the support seat c14 is fixedly connected to the installation box 1.

[0035] That is, when the motor 2 is started, the motor drives the transmission rod a3 to rotate, and the take-up wheel 4 rotates synchronously with the transmission rod a3. Since the wire rope 15 is retracted and released as the reel 4 rotates, the support rod 13 supports the wire rope 15 while retracting and releasing the wire rope driven by the wire rope 15.

[0036] The fixing mechanism 17 includes a shell 19, a first cavity 20 is opened in the shell 19, a telescopic assembly is arranged in the first cavity 20, a circular groove connected to the first cavity 20 is opened at the bottom of the shell 19, and a plurality of groups of fixing parts are arranged around the shell 19 relative to the circular groove. The plurality of groups of fixing parts are distributed at equal angles along the circumference of the shell 19, and the fixing parts are movably connected to the telescopic assembly, and the fixing parts are driven by the telescopic assembly to complete the clamping and fixing of the smoke alarm 18.

[0037] Example 2

[0038] On the basis of Example 1, Figure 2 As shown, the counting mechanism 16 in the lifting device for smoke alarm of the utility model comprises a driven rod 6, a steel wire 15 passes through the driven rod 6 and the support rod 13 in sequence, and both ends of the driven rod 6 are movably connected to a support seat b7 fixedly connected to the installation box 1, so as to ensure that the driven rod 6 rotates when the steel wire 15 is retracted. One end of the driven rod 6 passes through the support seat b7 and is connected to a driving wheel 8, and the driving wheel 8 is connected to a driven wheel 9 through a transmission belt 10;

[0039] The driven wheel 9 is fixed to one end of the transmission rod b36, the transmission rod b36 and the driven rod 6 are parallel to each other, the other end of the transmission rod b36 passes through the encoder support seat 11 and is connected to the encoder 12, the transmission rod b36 is movably connected to the encoder support seat 11, and the encoder support seat 11 is fixedly connected to the installation box 1.

[0040] That is, when the wire rope 15 is being retracted and released, the driven rod 6 drives the driving wheel 8 to rotate synchronously. Under the action of the transmission belt 10, the driven wheel 9 rotates along with the driving wheel 8. Since the driven wheel 9 is fixed to one end of the transmission rod b36, when the driven wheel 9 rotates, the transmission rod b36 rotates at the same time. The encoder 12 receives the signal and speed of the rotation of the transmission rod b36, and records the lowering length of the wire rope 15, thereby controlling the smoke alarm 18 to move to the specified height.

[0041] Example 3

[0042] On the basis of Example 2, Figure 3 and Figure 4As shown, the telescopic assembly for the smoke alarm of the utility model includes a support platform 24, a connecting rod 25 is vertically connected to the top of the support platform 24, a return spring a26 is sleeved on the outer side of the connecting rod 25, one end of the return spring a26 abuts against the support platform 24, and the other end abuts against the housing 19. When the support platform 24 moves toward the housing 19, the return spring a26 is compressed, so that the return spring a26 accumulates elastic potential energy.

[0043] The bottom of the support platform 24 is provided with accommodating grooves b28 corresponding to the number of fixing parts. The accommodating grooves b28 are opened along the edge of the support platform 24 toward the center. Slide grooves 29 are opened on the opposite side walls of the accommodating grooves b28 along the extension direction of the accommodating grooves b28. The slide grooves 29 realize the movable connection between the support platform 24 and the fixing parts.

[0044] The fixing part includes a clamping block 22, and a receiving groove a21 for accommodating the rotation of the clamping block 22 is opened on the shell 19 relative to the clamping block 22. The clamping block 22 is movably connected to the shell 19 through a pin a23, and one end of the clamping block 22 is movably connected to the support platform 24 through a pin b30, and both ends of the pin b30 are located in the slide groove 29.

[0045] In order to prevent the clamping block 22 from damaging the smoke alarm 18 when clamping the smoke alarm 18 , an anti-slip protective layer is bonded to the clamping block 22 .

[0046] The housing 19 is provided with a cavity for accommodating the connecting rod 25 at a position relative to the connecting rod 25, magnets a27 are respectively arranged on both sides of the top of the support platform 24 relative to the connecting rod 25, and magnets b37 are arranged on the housing 19 at a position relative to the magnet a27, and the magnet b37 is located in the first cavity 20. The depth of the cavity is not less than the length of the connecting rod 25, ensuring that the magnets a27 and b37 can be attracted.

[0047] That is, the smoke alarm 18 is placed in the circular groove of the housing 19, and the smoke alarm 18 contacts the clamping block 22 first, and the smoke alarm 18 is pressed down. The clamping block 22 transmits the downward pressure to the support platform 24, so that the support platform 24 moves downward. The support platform 24 moves downward and drives the clamping block 22 to slide relative to the support platform 24, and the clamping block 22 rotates from an inclined state to a vertical state;

[0048] When the magnet a27 and the magnet b37 are attracted, the clamping block 22 rotates to a vertical state, just fitting and clamping the side wall of the smoke alarm 18, and several groups of clamping blocks 22 are pressed toward the center at the same time to complete the fixation of the smoke alarm 18.

[0049] Furthermore, a pressure rod 31 is provided on the side wall of the shell 19 at the attraction position of the two groups of magnets a27 and magnets b37. The pressure rod 31 passes through the side wall of the shell 19 and is inserted into the first cavity 20. One end of the pressure rod 31 located in the first cavity 20 is fixedly connected with a wedge block 35. The tip of the wedge block 35 is facing the attraction position of the magnets a27 and magnets b37.

[0050] A second cavity 33 is opened on the side wall of the shell 19 relative to the pressure rod 31, and a return spring b32 is provided in the second cavity 33, and the pressure rod 31 passes through the return spring b32; and a pressure ring 34 is sleeved on the pressure rod 31, and the pressure ring 34 is located in the second cavity 33, one end of the return spring b32 abuts against the pressure ring 34, and the other end abuts against the shell 19.

[0051] The pressing rod 31 is pressed to insert the wedge block 35 into the gap between the magnet a27 and the magnet b37, thereby reducing the suction force between the two magnets. With the elastic potential energy of the return spring a26, the smoke alarm 18 can be easily removed from the fixing mechanism 17.

[0052] In order to facilitate the insertion of the wedge block 35 into the gap between the magnet a27 and the magnet b37, an inclined notch is provided on the side of the magnet b37 relative to the wedge block 35, and the inclined notch is located on the attraction surface with the magnet a27.

[0053] When the lifting device for smoke alarm of the utility model is used, the installation box 1 is fixed to the top plate of the position of smoke to be monitored by screws, the smoke alarm 18 is placed in the circular groove of the fixing mechanism 17, and is pressed down to make the magnet a27 at the bottom of the support platform 24 and the magnet b37 fixed on the shell 19 attract each other, at this time, the clamping block 22 tightly abuts and clamps the side wall of the smoke alarm 18, and the anti-skid protective layer on the surface of the clamping block 22 is cooperated to effectively avoid the accidental falling off of the smoke alarm 18; the starting motor 2 drives the reel 4 to rotate, so that the wire rope 15 is recovered until the smoke alarm 18 moves up to the specified position.

[0054] When the smoke alarm 18 needs to be repaired, the motor 2 is started to drive the reel 4 to rotate, and the smoke alarm 18 is lowered to a position where the repair worker can operate the repair. After the repair is completed, the smoke alarm 18 is moved up to the working position by the motor 2.

[0055] When the smoke alarm 18 needs to be moved to a specified working height, the moving distance of the wire rope 15 is determined by reading the data of the encoder 12, thereby enabling the smoke alarm 18 to move to the specified working height.

[0056] When the smoke alarm 18 needs to be replaced, the motor 2 is started to lower the smoke alarm 18. The operator presses the two pressure rods 31 on the side wall of the fixing mechanism 17 to insert the wedge block 35 between the two magnets 27, thereby reducing the suction force between the two magnets 27. In addition to the elastic potential energy of the reset spring a26, the operator can take the smoke alarm 18 out of the circular groove of the fixing mechanism 17 with a little force, and then install the new smoke alarm 18 back into the circular groove. The operation is simple and convenient, which greatly saves the time of the staff in replacing the smoke alarm 18 and improves the working efficiency.

Claims

1. A lifting device for a smoke alarm, characterized in that: The invention comprises an installation box (1), wherein a driving member, a counting mechanism (16) and a support rod (13) are installed in the installation box (1), the driving member is movably connected to a reel (4), a steel wire rope (15) is wound around the reel (4), and one end of the steel wire rope (15) is in an S shape and passes through the counting mechanism (16) and the support rod (13) in sequence to be connected to a fixing mechanism (17) below the installation box (1); The fixing mechanism (17) comprises a shell (19), a first cavity (20) is formed in the shell (19), a telescopic assembly is arranged in the first cavity (20), a circular groove in communication with the first cavity (20) is formed at the bottom of the shell (19), a plurality of groups of fixing members are arranged around the circular groove relative to the shell (19), the fixing members are movably connected to the telescopic assembly, and the telescopic assembly drives the fixing members to complete the clamping and fixing of the smoke alarm (18); The telescopic assembly comprises a support platform (24), the top of the support platform (24) is vertically connected to a connecting rod (25), the bottom of the support platform (24) is provided with accommodating grooves b (28) corresponding to the number of fixing parts, the accommodating grooves b (28) are opened along the edge of the support platform (24) toward the center, and sliding grooves (29) are opened on the opposite side walls of the accommodating grooves b (28) along the extension direction of the accommodating grooves b (28), and the movable connection between the support platform (24) and the fixing parts is realized through the sliding grooves (29); The housing (19) is provided with a cavity for accommodating the connecting rod (25) at a position relative to the connecting rod (25); the depth of the cavity is not less than the length of the connecting rod (25); magnets a (27) are respectively arranged on the top of the support platform (24) at both sides relative to the connecting rod (25); a magnet b (37) is arranged on the housing (19) at a position relative to the magnet a (27); and the magnet b (37) is located in the first cavity (20).

2. The lifting device for smoke alarm according to claim 1, characterized in that: The driving member comprises a motor (2), the output shaft of the motor (2) is connected to a transmission rod a (3), the transmission rod a (3) is sleeved with the reel (4), and one end of the transmission rod a (3) away from the motor (2) is movably connected to a support base a (5) fixed to the mounting box (1); Both ends of the support rod (13) are movably connected to a support seat c (14), and the bottom end of the support seat c (14) is fixedly connected to the installation box (1).

3. The lifting device for smoke alarm according to claim 2, characterized in that: The counting mechanism (16) comprises a driven rod (6), the steel wire rope (15) passes through the driven rod (6) and the support rod (13) in sequence, both ends of the driven rod (6) are movably connected to a support seat b (7) fixedly connected to the installation box (1), and one end of the driven rod (6) passes through the support seat b (7) and is connected to a driving wheel (8), and the driving wheel (8) is connected to a driven wheel (9) via a transmission belt (10); The driven wheel (9) is fixed to one end of a transmission rod b (36), the transmission rod b (36) and the driven rod (6) are parallel to each other, the other end of the transmission rod b (36) passes through an encoder support seat (11) and is connected to an encoder (12), the transmission rod b (36) is movably connected to the encoder support seat (11), and the encoder support seat (11) is fixedly connected to the mounting box (1).

4. The lifting device for smoke alarm according to claim 1, characterized in that: A return spring a (26) is sleeved on the outside of the connecting rod (25); one end of the return spring a (26) abuts against the support platform (24), and the other end abuts against the housing (19).

5. The lifting device for smoke alarm according to claim 1, characterized in that: A plurality of groups of the fixing parts are distributed at equal angles along the circumference of the shell (19), and the fixing parts include a clamping block (22). A receiving groove a (21) for accommodating the rotation of the clamping block (22) is provided on the shell (19) at a position relative to the clamping block (22). The clamping block (22) is movably connected to the shell (19) via a pin a (23). One end of the clamping block (22) is movably connected to the support platform (24) via a pin b (30), and both ends of the pin b (30) are located in the slide groove (29).

6. The lifting device for smoke alarm according to claim 5, characterized in that: An anti-slip protective layer is bonded onto the clamping block (22).

7. The lifting device for smoke alarm according to claim 1, characterized in that: A pressure rod (31) is provided on the side wall of the shell (19) at the attraction position of the two groups of magnets a (27) and magnets b (37); the pressure rod (31) passes through the side wall of the shell (19) and is inserted into the first cavity (20); and one end of the pressure rod (31) located in the first cavity (20) is fixedly connected to a wedge block (35); the tip of the wedge block (35) faces the attraction position of the magnets a (27) and magnets b (37); A second cavity (33) is formed on the side wall of the shell (19) at a position opposite to the pressure rod (31), a return spring b (32) is arranged in the second cavity (33), and the pressure rod (31) passes through the return spring b (32); a pressure ring (34) is sleeved on the pressure rod (31), and the pressure ring (34) is located in the second cavity (33), one end of the return spring b (32) abuts against the pressure ring (34), and the other end abuts against the shell (19).

8. The lifting device for smoke alarm according to claim 7, characterized in that: The magnet b (37) has an inclined notch on one side opposite to the wedge block (35), and the inclined notch is located on the attraction surface with the magnet a (27).

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