Screw opening device for switch explosion-proof cover

Abstract

The utility model discloses a spiral opening device for a switch explosion-proof cover, which comprises a base frame, an explosion-proof cover is rotatably arranged on the base frame, an opening device fixedly connected with the explosion-proof cover is rotatably arranged in a protective frame, and the opening device comprises a rotating shaft A arranged in the protective frame on the front side of the base frame. The mine safety protection device comprises a rotating shaft A, bevel gears A are fixedly arranged at the two ends of the rotating shaft A, bevel gears B are connected to the bevel gears A in a meshed mode, a rotating shaft B is fixedly arranged on the bevel gears B, a connecting rod is fixedly arranged on the rotating shaft B, and one end of the connecting rod is fixedly connected with a protection cover. A polygonal rotating block is sleeved with a fixing groove in the end of an adjusting rod, the polygonal rotating block is lifted upwards, so that a bevel gear A at the end of a rotating shaft A drives a rotating shaft B to rotate, an anti-explosion cover rotates around the rotating shaft B to be opened under the cooperation of a balancing weight, and therefore the situation that a door shaft is rusted or a handle is broken due to too large force when opened is prevented; and the cover is difficult to open.

Description

Technical Field

[0001] The utility model relates to the technical field of mine safety, in particular to a spiral opening device for a switch explosion-proof cover. Background Art

[0002] Chinese patent CN215860277U discloses an automatic opening device for explosion-proof doors. The utility model has a reasonable structural design. One end of the steel wire rope is connected to the explosion-proof door, and the other end is connected to the tray through a pulley. A counterweight is placed on the tray. The gravity required to open the explosion-proof door is provided by multiple counterweights. There is no need to open the explosion-proof door manually, which saves time and effort, speeds up the opening rate of the explosion-proof door, and ensures the safety of mine ventilation.

[0003] Although this device can effectively speed up the opening rate of the explosion-proof door and ensure the safety of mine ventilation, due to the complex underground working environment, the door shaft often rusts or the opening handle breaks due to excessive force, making it difficult to open the cover, thus affecting the normal use of the explosion-proof cover. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a spiral opening device for a switch explosion-proof cover, which solves the problem that the door shaft is rusted or the opening handle breaks due to excessive force, making it difficult to open the cover, thereby affecting the normal use of the explosion-proof cover.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a spiral opening device for a switch explosion-proof cover, comprising a base frame, a protective frame is fixedly provided on the outside of the base frame, an explosion-proof cover is rotatably provided on the base frame, an opening device fixedly connected to the explosion-proof cover is rotatably provided inside the protective frame, counterweight components are fixedly provided on both sides of the base frame, the opening device comprises a rotating shaft A arranged inside the protective frame on the front side of the base frame, bevel gears A are fixedly provided at both ends of the rotating shaft A, bevel gears B are meshed and connected on the bevel gear A, a rotating shaft B is fixedly provided on the bevel gear B, a connecting rod is fixedly provided on the rotating shaft B, one end of the connecting rod is fixedly connected to the protective cover, a polygonal rotating block is fixedly provided at the center position of the rotating shaft A, a plurality of groups of fixed blocks are equidistantly fixed on the polygonal rotating block, two cross-arranged adjusting rods are rotatably provided on the upper side of the protective frame, a fixing groove matching the fixed block is fixedly provided at the end of the adjusting rod inside the protective frame, and a grip ring is fixedly provided at the end of the adjusting rod outside the protective frame.

[0006] Preferably, the counterweight assembly includes a support rod, a cross bar is fixedly provided on the top of the support rod, a pulley is rotatably provided on the cross bar, a steel wire rope is wound around the pulley, one end of the steel wire rope is connected to a tray, and multiple groups of counterweight blocks are placed on the tray.

[0007] Preferably, a pull ring is fixedly provided on the explosion-proof cover, and the pull ring is fixedly connected to the other end of the steel wire rope.

[0008] Preferably, a rubber pad is fixedly provided at the junction of the explosion-proof cover and the base frame.

[0009] Preferably, a non-slip rubber pad is fixedly provided on the inner ring of the grip ring, and the inner wall of the protective frame is filled with activated carbon.

[0010] Preferably, a movable groove for allowing the adjusting rod to be pushed upward is provided on the protective frame located at the position of the adjusting rod.

[0011] Beneficial Effects

[0012] The utility model provides a spiral opening device for a switch explosion-proof cover. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The spiral opening device for the explosion-proof cover of the switch is realized by setting the fixed groove at the end of the adjusting rod on the polygonal rotating block and lifting it upward, thereby driving the rotating shaft B to rotate through the bevel gear A at the end of the rotating shaft A, and the explosion-proof cover is rotated around the rotating shaft B to open with the cooperation of the counterweight block, thereby preventing the door shaft from rusting or the opening handle from breaking due to excessive force, which makes it difficult to open the cover, saving manpower and work intensity, and improving work efficiency.

[0014] (2) The switch explosion-proof cover spiral opening device protects the rotating shaft A and the rotating shaft B through the activated carbon in the protective frame and the protective frame interlayer, thereby preventing the rotating shaft A and the rotating shaft B from being deformed due to external collision and affecting the normal opening of the explosion-proof cover. At the same time, the activated carbon keeps the inside of the protective frame in a relatively dry environment at all times, thereby reducing the rusting of the rotating shaft A and the rotating shaft B, thereby increasing their service life and ensuring the normal opening of the explosion-proof cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is the front view of the utility model;

[0017] Figure 3 It is a side view of the utility model;

[0018] Figure 4 It is a side view of the rotating shaft A of the utility model.

[0019] In the figure: 1. base frame; 2. protection frame; 3. explosion-proof cover; 4. opening device; 41. rotating shaft A, 42. bevel gear A; 43. bevel gear B; 44. rotating shaft B; 45. connecting rod; 46. polygonal rotating block; 47. fixed block; 48. adjusting rod; 49. fixing groove; 410. grip ring; 5. counterweight assembly; 51. support rod; 52. pulley; 53. counterweight block; 54. wire rope; 6. moving groove. DETAILED DESCRIPTION

[0020] 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.

[0021] The utility model provides two technical solutions:

[0022] Figure 1-4 The first embodiment is shown: a spiral opening device 4 for a switch explosion-proof cover 3, comprising a base frame 1, a protective frame 2 fixedly arranged on the outside of the base frame 1, an explosion-proof cover 3 rotatably arranged on the base frame 1, an opening device 4 fixedly arranged inside the protective frame 2 and connected to the explosion-proof cover 3, counterweight assemblies 5 fixedly arranged on both sides of the base frame 1, the opening device 4 comprising a rotating shaft A41 arranged inside the protective frame 2 on the front of the base frame 1, bevel gears A42 fixedly arranged at both ends of the rotating shaft A41, bevel gears B43 meshingly connected on the bevel gear A42, a rotating shaft B44 fixedly arranged on the bevel gear B43, a connecting rod 45 fixedly arranged on the rotating shaft B44, one end of the connecting rod 45 fixedly connected to the protective cover, located at the center of the rotating shaft A41 A polygonal rotating block 46 is fixedly provided at the protective frame 2, and a plurality of groups of fixed blocks 47 are fixedly provided on the polygonal rotating block 46 at equal intervals. Two cross-arranged adjusting rods 48 are rotatably provided on the protective frame 2. A fixing groove 49 matching the fixed block 47 is fixedly provided at the end of the adjusting rod 48 inside the protective frame 2. A grip ring 410 is fixedly provided at the end of the adjusting rod 48 outside the protective frame 2. The counterweight assembly 5 includes a support rod 51. A cross bar is fixedly provided on the top of the support rod 51. A pulley 52 is rotatably provided on the cross bar. A steel wire rope 54 is wound around the pulley 52. ​​One end of the steel wire rope 54 is connected to a tray, and a plurality of groups of counterweight blocks 53 are placed on the tray. A pull ring is fixedly provided on the explosion-proof cover 3, and the pull ring is fixedly connected to the other end of the steel wire rope 54.

[0023] By sleeveing ​​the fixed groove 49 at the end of the adjusting rod 48 on the polygonal rotating block 46 and lifting it upward, the rotating shaft B44 is driven to rotate through the bevel gear A42 at the end of the rotating shaft A41, and the explosion-proof cover 3 is rotated around the rotating shaft B44 to open with the cooperation of the counterweight block 53, thereby preventing the door shaft from rusting or the opening handle from breaking due to excessive force, which makes it difficult to open the cover, saving manpower and work intensity, and improving work efficiency.

[0024] Figure 1-3 A second embodiment is shown, and its main difference from the first embodiment is that a rubber pad is fixedly provided at the joint between the explosion-proof cover 3 and the base frame 1, a non-slip rubber pad is fixedly provided on the inner circle of the grip ring 410, the inner wall of the protective frame 2 is filled with activated carbon, and a movable groove 6 is provided on the protective frame 2 at the position of the adjusting rod 48 for the adjusting rod 48 to be pushed upward.

[0025] The protection of the rotating shaft A41 and the rotating shaft B44 is achieved through the activated carbon in the protective frame 2 and the interlayer of the protective frame 2, so as to prevent the deformation of the rotating shaft A41 and the rotating shaft B44 caused by external collision and affect the normal opening of the explosion-proof cover 3. At the same time, the activated carbon can always keep a relatively dry environment inside the protective frame, thereby reducing the rust of the rotating shaft A41 and the rotating shaft B44, thereby increasing their service life and ensuring the normal opening of the explosion-proof cover 3.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0027] When in use, hold the grip ring 410 at the end of the adjusting rod 48 so that the fixed groove 49 at the end is sleeved on the fixed block 47 on the polygonal rotating block 46, and then move the adjusting rod 48 upward, thereby driving the rotating shaft A41 to rotate, and driving the bevel gear B43 to rotate through the bevel gear A42 at the end of the rotating shaft A41. When the adjusting rod 48 is moved upward to the top of the movable groove 6, release the adjusting rod 48 so that the fixed groove 49 at its end is separated from the fixed block 47 in the initial position, and repeat the above-mentioned steps of contacting the fixed groove 49 with the fixed block 47, so that with the help of the counterweight block 53, it drives the explosion-proof cover 3 to rotate and open through the connecting rod 45 on the rotating shaft B44.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral opening device for a switch explosion-proof cover, comprising a base frame, characterized in that: A protective frame is fixedly provided on the outside of the base frame, an explosion-proof cover is rotatably provided on the base frame, an opening device fixedly connected to the explosion-proof cover is rotatably provided inside the protective frame, counterweight assemblies are fixedly provided on both sides of the base frame, the opening device includes a rotating shaft A arranged inside the protective frame on the front side of the base frame, bevel gears A are fixedly provided at both ends of the rotating shaft A, a bevel gear B is meshed and connected on the bevel gear A, a rotating shaft B is fixedly provided on the bevel gear B, a connecting rod is fixedly provided on the rotating shaft B, one end of the connecting rod is fixedly connected to the protective cover, a polygonal rotating block is fixedly provided at the center position of the rotating shaft A, a plurality of groups of fixed blocks are equidistantly fixed on the polygonal rotating block, two cross-arranged adjusting rods are rotatably provided on the upper side of the protective frame, a fixing groove matching the fixed block is fixedly provided at the end head of the adjusting rod inside the protective frame, and a grip ring is fixedly provided at the end head of the adjusting rod outside the protective frame.

2. A switch explosion-proof cover spiral opening device according to claim 1, characterized in that: The counterweight assembly includes a support rod, a cross rod is fixedly provided on the top of the support rod, a pulley is rotatably provided on the cross rod, a steel wire rope is wound around the pulley, one end of the steel wire rope is connected to a tray, and multiple groups of counterweight blocks are placed on the tray.

3. A switch explosion-proof cover spiral opening device according to claim 1, characterized in that: A pull ring is fixedly provided on the explosion-proof cover, and the pull ring is fixedly connected to the other end of the steel wire rope.

4. A switch explosion-proof cover spiral opening device according to claim 1, characterized in that: A rubber pad is fixedly provided at the joint between the explosion-proof cover and the base frame.

5. The switch explosion-proof cover spiral opening device according to claim 1, characterized in that: An anti-skid rubber pad is fixedly arranged on the inner ring of the grip ring, and the inner wall of the protection frame is filled with activated carbon.

6. A switch explosion-proof cover spiral opening device according to claim 1, characterized in that: A moving groove for allowing the adjusting rod to be pushed upward is formed on the protection frame located at the position of the adjusting rod.

Images