Auxiliary device for quick perforation installation of media box

Abstract

The present invention relates to the technical field of media box installation, and in particular to an auxiliary device that facilitates the rapid perforation installation of a media box. The present invention provides an auxiliary device that facilitates the rapid perforation installation of a media box, which can limit and align the position of a media plate and facilitates the alignment of perforations. An auxiliary device that facilitates the rapid perforation installation of a media box includes a frame, a sliding block, etc., and the upper left and right sides of the frame are slidably connected with three sliding blocks in the front, middle and rear. When the media box needs to be perforated and installed, the present invention can fit the media plates together to facilitate the perforation operation, and the fixed plate moves backward to toggle the push handle and rotate the rotating threaded rod to rotate, so that the rotating threaded rod and the contact plate move to the left under the action of the thread, thereby squeezing the push plate to move to the left, pushing the media plate to the left to contact the left part of the limit frame, so that the media plate is aligned, thereby ensuring the quality of the perforation of the media box.

Description

Technical Field

[0001] The invention relates to the technical field of medium box installation, and in particular to an auxiliary device for facilitating quick perforation installation of a medium box. Background Art

[0002] The medium box is an important component of the magnetic separator. It is usually supported by three medium plates and then multiple magnetic rods are inserted horizontally. However, the perforated installation of the medium box is usually performed manually by workers. During installation, the medium plates need to be aligned and set in parallel. Without the use of auxiliary devices, the positions of the three medium plates cannot be guaranteed, and the alignment of the medium plates cannot be guaranteed. This will cause the position and angle of the magnetic rods to be offset, thereby affecting the performance of the magnetic separator. In addition, there is a certain distance between the medium plates. When inserting the magnetic rod into the hole of the medium plate, it is not easy to align and insert it into the hole of another corresponding medium plate, which will affect the efficiency of the perforated installation of the medium box.

[0003] Therefore, it is necessary to design an auxiliary device that can limit and align the position of the medium plate and facilitate the alignment of the perforations and facilitate the rapid perforation installation of the medium box. Summary of the invention

[0004] In order to overcome the shortcomings that the positions of the three dielectric plates cannot be guaranteed and the alignment of the dielectric plates cannot be guaranteed, which will cause the position and angle of the magnetic rod to be offset, and the dielectric plates are at a certain distance from each other, and when the magnetic rod is inserted into the hole of the dielectric plate, it is not easy to align and insert it into the hole of another corresponding dielectric plate, which will further affect the efficiency of the perforation installation of the dielectric box, the present invention provides an auxiliary device that can limit and align the position of the dielectric plate and facilitates the alignment of the perforations, so as to facilitate the quick perforation installation of the dielectric box.

[0005] An auxiliary device for facilitating quick perforation installation of a medium box comprises a frame, a sliding block, a limit frame and a correction mechanism. The upper left and right sides of the frame are slidably connected with three front, middle and rear sliding blocks. The two front, two middle and two rear sliding blocks are rotatably connected with the limit frames. The limit frames are used to place medium plates. The upper side of the frame is provided with a correction mechanism for correcting the position of the medium plate.

[0006] In a preferred embodiment of the present invention, the correction mechanism includes a pushing assembly, a first fixed frame, a push plate, a first telescopic spring, a rotating threaded rod and a contact plate. The first fixed frame is connected to the upper right side of the frame, and the right side of the limit frame is slidably connected to the push plate. The push plate and the adjacent limit frame are connected with the first telescopic spring. The first fixed frame is threadedly connected to the rotating threaded rod, and a pushing assembly for pushing the rotating threaded rod to rotate is provided between the sliding block and the rotating threaded rod. The left side of the rotating threaded rod is rotatably connected to the contact plate, and the contact plate moves to the left and contacts the push plate.

[0007] In a preferred embodiment of the present invention, the pushing assembly includes a fixed plate and a push handle, the front side of the right front sliding block is connected to the fixed plate, the right side of the rotating threaded rod is connected to the push handle, and the fixed plate moves backward to contact the push handle.

[0008] In a preferred embodiment of the present invention, a lifting mechanism is further included, which includes a lifting frame, a fixed guide rail and rollers. The lifting frames are slidably connected to the limit frames on the front and rear sides, the lower part of the frame is connected to the fixed guide rail, and the front and rear sides of the lower part of the lifting frame are rotatably connected to the rollers, and the rollers are in contact with the fixed guide rails.

[0009] In a preferred embodiment of the present invention, it also includes a moving mechanism, which includes a bidirectional screw, a motor and a transmission belt. The left and right parts of the upper part of the frame are rotatably connected to the bidirectional screws, the sliding blocks on the front and rear sides are connected to the adjacent bidirectional screws through threads, the sliding blocks in the middle are rotatably connected to the adjacent bidirectional screws, the left and right parts of the front part of the frame are installed with motors, and the output shaft of the motor and the adjacent bidirectional screws are connected with a transmission belt through a pulley.

[0010] In a preferred embodiment of the present invention, it also includes a limiting mechanism, which includes a slider and a second telescopic spring. The left and right parts of the upper part of the limiting frame are slidably connected with two sliders that are symmetrical front and back, and the second telescopic spring is connected between the slider and the adjacent limiting frame.

[0011] In a preferred embodiment of the present invention, a fixing mechanism is also included, which includes a second fixing frame, a fixing rod, a clamping rod and a third telescopic spring. The second fixing frame is connected to the upper left side of the frame, the fixing rod is connected to the left side of the middle limiting frame, and the clamping rod is rotatably connected to the left side of the second fixing frame in a front-to-back symmetrical manner. The clamping rod is used to clamp the fixing rod, and the third telescopic spring is connected between the clamping rod and the second fixing frame.

[0012] In a preferred embodiment of the present invention, a prompt mechanism is also included, which includes a rotating rod, a pulling rod, an alarm light and a torsion spring. The middle part of the second fixed frame is rotatably connected to the front and rear rotating rods, and the sides of the rotating rods that are away from each other are rotatably connected to the pulling rods. The front and rear parts of the second fixed frame are rotatably connected to the alarm lights, and the alarm lights are respectively rotatably connected to the adjacent pulling rods. A torsion spring is connected between the alarm light and the second fixed frame.

[0013] The beneficial effects of the present invention are as follows: 1. When the medium box needs to be perforated and installed, the medium plates can be fitted together to facilitate the perforation operation. The fixed plate moves backward to drive the push handle and the rotating threaded rod to rotate, so that the rotating threaded rod and the contact plate move to the left under the action of the thread, thereby squeezing the push plate to move to the left, pushing the medium plate to the left to contact the left part of the limit frame, thereby aligning the medium plate and ensuring the quality of the perforation of the medium box.

[0014] 2. After the perforation is completed, the present invention can control the sliding blocks on both sides to move outwards. When the limit frame and the medium plate are opened to each other, the lifting frame and the rollers will be driven to move to both sides. The rollers move on the fixed guide rails, so that the lifting frame and the rollers move to both sides and move upward at the same time. The upward movement of the lifting frame will push the medium plate, so that people can take out the perforated medium box conveniently.

[0015] 3. When the medium plate needs to be opened, the present invention can be operated by controlling the motor, which will drive the bidirectional screw to rotate through the transmission belt and the transmission wheel. The bidirectional screw will drive the front and rear limit frames to move to both sides and open, thereby realizing the opening of the medium plate, thereby realizing automatic opening of the medium plate and reducing the trouble of manual operation.

[0016] 4. When the medium plate is placed on the limit frame of the present invention, the medium plate will squeeze the slider to move outward, and then under the action of the second telescopic spring, the slider can clamp the medium plate, thereby fixing the medium plate to prevent the medium plate from deflecting during perforation.

[0017] 5. In the present invention, when the distance that the magnetic rod penetrates into the medium plate is not accurate, the weight of the front and rear of the limit frame will be inconsistent. At this time, the limit frame will rotate and swing, and the swing of the fixed rod will be stuck between the clamping rod and the second fixed frame, thereby limiting and fixing the limit frame to prevent the medium box from tipping over. After the perforation angle is adjusted, the limit frame will swing and reset. By observing whether the fixed rod swings and resets, it can be judged whether the perforation is accurate.

[0018] 6. When the fixing rod of the present invention swings and moves to be clamped between the clamping rod and the second fixing frame, it also pushes the rotating rod to rotate, and then pushes the pull rod to drive the alarm light to swing, thereby reminding people that the perforation distance has deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the frame, sliding block and limiting frame of the present invention.

[0021] Figure 3 It is a schematic diagram of the first partial three-dimensional structure of the correction mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of a second partial three-dimensional structure of the correction mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the present invention.

[0024] Figure 6It is a schematic diagram of the three-dimensional structure of the lifting frame, rollers and limiting frame of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the moving mechanism of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the limit frame, the sliding block and the second telescopic spring of the present invention.

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0029] Fig.11 It is a schematic diagram of the three-dimensional structure of the fixing mechanism and the prompting mechanism of the present invention.

[0030] Fig.12 It is a schematic diagram of the first partial three-dimensional structure of the prompt mechanism of the present invention.

[0031] Fig.13 It is a schematic diagram of a second partial three-dimensional structure of the prompt mechanism of the present invention.

[0032] Among them, the above-mentioned drawings include the following figure marks: 1. frame, 2. sliding block, 3. limiting frame, 4. correction mechanism, 41. fixed plate, 42. first fixed frame, 43. push handle, 44. push plate, 45. first telescopic spring, 46. rotating threaded rod, 47. contact plate, 5. lifting mechanism, 51. lifting frame, 52. fixed guide rail, 53. roller, 6. moving mechanism, 61. bidirectional screw, 62. motor, 63. transmission belt, 7. limiting mechanism, 71. slider, 72. second telescopic spring, 8. fixing mechanism, 81. second fixed frame, 82. fixing rod, 83. clamping rod, 84. third telescopic spring, 9. prompt mechanism, 91. rotating rod, 92. pull rod, 93. alarm light, 94. torsion spring. DETAILED DESCRIPTION

[0033] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0034] Example 1

[0035] An auxiliary device that facilitates quick perforation installation of a media box, such as Figure 1-Figure 4As shown, it includes a frame 1, a sliding block 2, a limit frame 3 and a correction mechanism 4. The upper left and right sides of the frame 1 are slidably connected with three front, middle and rear sliding blocks 2. The two front, two middle and two rear sliding blocks 2 are rotatably connected with the limit frames 3. The limit frames 3 are used to place the medium plates. The upper side of the frame 1 is provided with a correction mechanism 4, which is used to correct the position of the medium plate.

[0036] like Figure 1 , Figure 3 and Figure 4 As shown, the correction mechanism 4 includes a fixed plate 41, a first fixed frame 42, a push handle 43, a push plate 44, a first telescopic spring 45, a rotating threaded rod 46 and a contact plate 47. The front side of the right front sliding block 2 is welded with a fixed plate 41, the upper right side of the frame 1 is welded with a first fixed frame 42, the right side of the limit frame 3 is slidably connected with a push plate 44, the push plate 44 and the adjacent limit frame 3 are connected with a first telescopic spring 45, the rotating threaded rod 46 is connected to the first fixed frame 42 by threads, and the right side of the rotating threaded rod 46 is welded with a push handle 43. The fixed plate 41 moves backward and contacts the push handle 43, thereby pushing the push handle 43 to swing, thereby driving the rotating threaded rod 46 to rotate, and the contact plate 47 is rotatably connected to the left side of the rotating threaded rod 46. The rotating threaded rod 46 rotates and moves to the left under the action of the thread, thereby driving the contact plate 47 to move to the left to squeeze the push plate 44 to move to the left, thereby enabling the medium plate to be pushed to the left, so that the medium plate is aligned.

[0037] When it is necessary to perform perforation installation of the medium box, the medium plates can be placed on the limit frame 3 respectively, and then the sliding block 2 can be controlled to move closer to the middle, so that the medium plates can be fitted together, which is convenient for people to insert the magnetic rod between the medium plates. At the same time, when the sliding block 2 moves closer to the middle, it will drive the fixed plate 41 to move backward, and the fixed plate 41 will move backward to contact the push handle 43, and then the push handle 43 and the rotating threaded rod 46 will be rotated, so that the rotating threaded rod 46 will move to the left under the action of the thread, and then drive the contact plate 47 to move to the left, thereby squeezing the push plate 44 to move to the left, and the first telescopic spring 45 is stretched, so that the medium plate can be pushed to the left to contact the left part of the limit frame 3, so that the medium plate is aligned, thereby ensuring the quality of the perforation of the medium box, and then the magnetic rod can be controlled to perform perforation. After the perforation is completed, the sliding blocks 2 on both sides can be controlled to move outward, thereby driving the limit frame 3 and the medium plate to open to each other, and then welding is performed to form a medium box.

[0038] Example 2

[0039] On the basis of Example 1, Figure 1 , Figure 5 and Figure 6As shown, a lifting mechanism 5 is also included, and the lifting mechanism 5 includes a lifting frame 51, a fixed guide rail 52 and a roller 53. The lifting frames 51 are slidably connected to the limit frames 3 on the front and rear sides. When the limit frames are opened to each other, the lifting frames 51 will be driven to move to both sides. The fixed guide rail 52 is welded to the lower part of the frame 1, and the front and rear sides of the lower part of the lifting frame 51 are rotatably connected to the rollers 53. The rollers 53 are in contact with the fixed guide rail 52. The movement of the lifting frame 51 to both sides will drive the rollers 53 to move to both sides. Under the action of the fixed guide rail 52, the lifting frame 51 and the rollers 53 move to both sides and move upward at the same time. The upward movement of the lifting frame 51 will push the medium plate.

[0040] When the limit frame 3 and the medium plate are opened to each other, the lifting frame 51 and the roller 53 will be driven to move to both sides. The roller 53 moves on the fixed guide rail 52, so that the lifting frame 51 and the roller 53 move to both sides and move upward at the same time. At the same time, the roller 53 will rotate, which will not affect the movement of the lifting frame 51. The lifting frame 51 moves upward to push the medium plate, so that people can take out the perforated medium box conveniently.

[0041] like Figure 1 and Figure 7 As shown, it also includes a moving mechanism 6, which includes a bidirectional screw 61, a motor 62 and a transmission belt 63. The left and right parts of the upper part of the frame 1 are rotatably connected to the bidirectional screw 61 through bearings, the sliding blocks 2 on the front and rear sides are connected to the adjacent bidirectional screws 61 through threads, and the sliding blocks 2 in the middle are rotatably connected to the adjacent bidirectional screws 61. The left and right parts of the front part of the frame 1 are both installed with motors 62 through bolts, and the output shaft of the motor 62 and the adjacent bidirectional screws 61 are connected with a transmission belt 63 through a pulley. Controlling the operation of the motor 62 will drive the bidirectional screw 61 to rotate through the transmission belt 63 and the transmission wheel, and the bidirectional screw 61 will drive the front and rear limit frames 3 to move and open to both sides through threads.

[0042] When it is necessary to control the opening of the medium plate, the motor 62 can be controlled to operate, and the bidirectional screw 61 will be driven to rotate through the transmission belt 63 and the transmission wheel. The bidirectional screw 61 will drive the front and rear limit frames 3 to move to both sides and open, thereby realizing the opening of the medium plate, thereby realizing automatic opening of the medium plate and reducing the trouble of manual operation.

[0043] like Figure 1 , Figure 8 and Fig. 9As shown, it also includes a limiting mechanism 7, which includes a slider 71 and a second telescopic spring 72. The left and right parts of the upper part of the limiting frame 3 are slidably connected with two sliders 71 that are symmetrical front and back. When the medium plate is placed on the limiting frame 3, the medium plate will squeeze the slider 71 to move outward. The second telescopic spring 72 is connected between the slider 71 and the adjacent limiting frame 3. Under the action of the second telescopic spring 72, the slider 71 can clamp and fix the medium plate.

[0044] When the medium plate is placed on the limiting frame 3, the medium plate will squeeze the slider 71 to move outward, and the second telescopic spring 72 will be compressed. Then, under the action of the second telescopic spring 72, the slider 71 can clamp the medium plate, thereby fixing the medium plate and preventing the medium plate from shifting during perforation.

[0045] like Figure 1 and Fig.10 As shown, it also includes a fixing mechanism 8, which includes a second fixing frame 81, a fixing rod 82, a clamping rod 83 and a third telescopic spring 84. The second fixing frame 81 is welded on the upper left side of the frame 1, and the fixing rod 82 is welded on the left side of the middle limiting frame 3. The rotation and swinging of the limiting frame 3 will drive the fixing rod 82 to swing and move. The left side of the second fixing frame 81 is symmetrically connected to the clamping rod 83 in a front-to-back rotation manner. When the fixing rod 82 swings, it will contact the clamping rod 83. The clamping rod 83 is used to clamp the fixing rod 82, thereby limiting and fixing the limiting frame 3. A third telescopic spring 84 is connected between the clamping rod 83 and the second fixing frame 81.

[0046] When the distance that the magnetic rod penetrates into the medium plate is not accurate, the front and rear weights of the limit frame 3 will be inconsistent. At this time, the limit frame 3 will rotate and swing, thereby causing the fixed rod 82 to swing. When the fixed rod 82 contacts the card rod 83, it will squeeze the card rod 83 to rotate, and the third telescopic spring 84 will be compressed. Then the fixed rod 82 will be stuck between the card rod 83 and the second fixed frame 81. At this time, the third telescopic spring 84 will recover and drive the card rod 83 to rotate in the opposite direction and reset, thereby limiting and fixing the limit frame 3 to prevent the medium box from tipping over. Then the distance of the magnetic rod perforation can be adjusted. After the adjustment is completed, the limit frame 3 will swing and reset. At this time, the control card rod 83 will no longer clamp the fixed rod 82 to see whether the fixed rod 82 will swing and reset. In this way, it can be judged whether the perforation distance is accurate.

[0047] like Figure 1 , Fig.11 , Fig.12 and Fig.13As shown, it also includes a prompt mechanism 9, which includes a rotating rod 91, a pulling rod 92, an alarm light 93 and a torsion spring 94. The middle part of the second fixed frame 81 is rotatably connected with the front and rear rotating rods 91. The swinging movement of the fixed rod 82 will push the rotating rod 91 to rotate. The sides of the rotating rod 91 that are away from each other are rotatably connected with the pulling rod 92. The front and rear parts of the second fixed frame 81 are rotatably connected with the alarm lights 93. Controlling the swing of the alarm lights 93 will trigger an alarm. The alarm lights 93 are rotatably connected to the adjacent pulling rods 92 respectively. The rotation of the rotating rod 91 will push the pulling rod 92 to drive the alarm lights 93 to swing and trigger the alarm at the same time. A torsion spring 94 is connected between the alarm lights 93 and the second fixed frame 81.

[0048] When the fixing rod 82 is inserted between the fixing rod 83 and the second fixing frame 81, it will also push the rotating rod 91 to rotate, and then push the pull rod 92 to drive the alarm light 93 to swing, and the torsion spring 94 will deform, thereby reminding people that the perforation distance has deviation. After the perforation distance is adjusted, the torsion spring 94 will restore and drive the alarm light 93 to swing in the opposite direction and reset.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An auxiliary device for facilitating quick perforation installation of a media box, comprising a frame (1), characterized in that: It also comprises a sliding block (2), a limiting frame (3) and a correction mechanism (4); the left and right sides of the upper part of the frame (1) are both slidably connected to the front, middle and rear three sliding blocks (2); the two sliding blocks (2) at the front, the two sliding blocks (2) at the middle and the two sliding blocks (2) at the rear are all rotatably connected to the limiting frames (3); the limiting frames (3) are used to place the medium plate; the upper side of the frame (1) is provided with a correction mechanism (4) for correcting the position of the medium plate; The correction mechanism (4) comprises a pushing assembly, a first fixed frame (42), a push plate (44), a first telescopic spring (45), a rotating threaded rod (46) and a contact plate (47); the upper right side of the frame (1) is connected to the first fixed frame (42); the right side of the limiting frame (3) is slidably connected to the push plate (44); the push plate (44) and the adjacent limiting frame (3) are connected to the first telescopic spring (45); the first fixed frame (42) is connected to the rotating threaded rod (46) by threading; a pushing assembly for pushing the rotating threaded rod (46) to rotate is provided between the sliding block (2) and the rotating threaded rod (46); the left side of the rotating threaded rod (46) is rotatably connected to the contact plate (47); the contact plate (47) moves leftward to contact the push plate (44); The pushing assembly comprises a fixing plate (41) and a pushing handle (43); the front side of the right front sliding block (2) is connected to the fixing plate (41); the right side of the rotating threaded rod (46) is connected to the pushing handle (43); the fixing plate (41) moves backwards to contact the pushing handle (43).

2. An auxiliary device for facilitating quick perforation installation of a media box as claimed in claim 1, characterized in that: The machine also comprises a lifting mechanism (5), the lifting mechanism (5) comprising a lifting frame (51), a fixed guide rail (52) and a roller (53), the lifting frame (51) being slidably connected to the limit frames (3) on both the front and rear sides, the fixed guide rail (52) being connected to the lower part of the frame (1), the rollers (53) being rotatably connected to the front and rear sides of the lower part of the lifting frame (51), and the rollers (53) being in contact with the fixed guide rail (52).

3. An auxiliary device for facilitating quick perforation installation of a media box as claimed in claim 2, characterized in that: The machine also comprises a moving mechanism (6), which comprises a bidirectional screw rod (61), a motor (62) and a transmission belt (63). The left and right parts of the upper part of the frame (1) are both rotatably connected to the bidirectional screw rod (61). The sliding blocks (2) on the front and rear sides are both connected to the adjacent bidirectional screw rods (61) through threads. The sliding blocks (2) in the middle are both rotatably connected to the adjacent bidirectional screw rods (61). The left and right parts of the front part of the frame (1) are both installed with motors (62). The output shaft of the motor (62) and the adjacent bidirectional screw rods (61) are connected to the transmission belt (63) through pulleys.

4. An auxiliary device for facilitating quick perforation installation of a media box as claimed in claim 3, characterized in that: The device further comprises a limiting mechanism (7), the limiting mechanism (7) comprising a slider (71) and a second telescopic spring (72), the left and right parts of the upper part of the limiting frame (3) are both slidably connected to two sliders (71) that are symmetrical in front and back, and the second telescopic spring (72) is connected between the slider (71) and the adjacent limiting frame (3).

5. An auxiliary device for facilitating quick perforation installation of a media box as claimed in claim 4, characterized in that: The invention also comprises a fixing mechanism (8), the fixing mechanism (8) comprising a second fixing frame (81), a fixing rod (82), a clamping rod (83) and a third telescopic spring (84); the upper left side of the frame (1) is connected to the second fixing frame (81); the left side of the middle limiting frame (3) is connected to the fixing rod (82); the left side of the second fixing frame (81) is rotatably connected to the clamping rod (83) in a front-to-back symmetrical manner; the clamping rod (83) is used to clamp the fixing rod (82); and the third telescopic spring (84) is connected between the clamping rod (83) and the second fixing frame (81).

6. An auxiliary device for facilitating quick perforation installation of a media box as claimed in claim 5, characterized in that: The device also includes a prompt mechanism (9), which includes a rotating rod (91), a pull rod (92), an alarm light (93) and a torsion spring (94). The middle part of the second fixed frame (81) is rotatably connected to two front and rear rotating rods (91), and the sides of the rotating rods (91) that are away from each other are rotatably connected to the pull rods (92). The front and rear parts of the second fixed frame (81) are rotatably connected to the alarm lights (93). The alarm lights (93) are respectively rotatably connected to adjacent pull rods (92), and a torsion spring (94) is connected between the alarm lights (93) and the second fixed frame (81).

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