Mining explosion-proof box and cam door opening device thereof

Abstract

The utility model discloses a mining explosion-proof box and a cam door opening device thereof, and the cam door opening device comprises a rotating shaft, a hinge, a transmission assembly, a locking assembly and a cam, the rotating shaft is fixedly mounted on a box body; the hinge sleeves the rotating shaft and is used for being connected with a box door; the transmission assembly and the locking assembly are both used for being fixedly installed on a box door. The cam is used for being rotatably installed on the box body, the cam pushes the transmission assembly to move in the axial direction of the rotating shaft when rotating so as to drive the box door and the hinge to move in the axial direction of the rotating shaft, and the locking assembly is used for being connected to a preset limiting structure of the box body in a clamped mode when the box door moves to the locking state. The locking assembly is further used for being separated from the limiting structure when the box door moves to the unlocking state. The cam door opening device is simple and compact in structure, small in occupied space, convenient and fast to install and good in using effect.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof equipment for mining, in particular to a cam door opening device and a mining explosion-proof box adopting the cam door opening device. Background Art

[0002] At present, with the continuous advancement of mining technology, the requirements for explosion-proof products for mining are getting higher and higher. The quick-opening mechanism of traditional mining explosion-proof boxes generally adopts an eccentric shaft structure, such as the quick-opening door structure for explosion-proof switches provided by Chinese utility model patent CN206972023U. This eccentric shaft quick-opening door mechanism occupies a large space, has many and complicated parts, and is time-consuming and labor-intensive to assemble. Utility Model Content

[0003] The utility model primarily provides a cam door opening device to solve the technical problems that the door opening mechanism of the existing mining explosion-proof box has a complex structure and occupies a large space.

[0004] The utility model also provides a mining explosion-proof box, which adopts the cam door opening device.

[0005] According to a first aspect of the utility model, a cam door opening device is provided, which is used to be installed between a box body and a door of a mining explosion-proof box, and the cam door opening device includes a rotating shaft, a hinge, a transmission assembly, a locking assembly and a cam;

[0006] The rotating shaft is used to be fixedly mounted on the box body;

[0007] The hinge is sleeved on the rotating shaft and is used to connect with the box door so that the box door is hinged relative to the box body;

[0008] The transmission assembly and the locking assembly are both used to be installed on the box door;

[0009] The cam is used to be rotatably mounted on the box body, and the cam is used to be driven to rotate and push the transmission assembly to move axially along the rotating shaft when rotating, thereby driving the box door and the hinge to move axially along the rotating shaft, and the locking assembly is used to be engaged with a preset limiting structure of the box body when the box door moves axially along the rotating shaft to a locked state, and the locking assembly is also used to disengage from the limiting structure when the box door moves axially along the rotating shaft to an unlocked state.

[0010] Preferably, the cam door opening device also includes a first limit block and a second limit block respectively arranged on the axial ends of the rotating shaft, and the hinge includes a first hinge and a second hinge arranged at an axial interval along the rotating shaft, the first hinge is used to abut the first limit block when the box door moves to a locked state, and the second hinge is used to abut the second limit block when the box door moves to an unlocked state.

[0011] Preferably, the rotating shaft is arranged along the vertical direction, the first limit block is arranged at the bottom end of the rotating shaft, the second limit block is arranged at the top end of the rotating shaft, and a support seat is provided on one side of the first limit block, and the support seat is used to support the first hinge after the box door is in an unlocked state and rotated relative to the box body to open.

[0012] Preferably, a guiding slope is provided on the support seat, and the guiding slope is used to guide the first hinge to slide into the upper surface of the support seat.

[0013] Preferably, the cam door opening device further comprises a locking pin for being arranged in the box body, and the locking pin is used to move out relative to the box body and lock the transmission assembly when the box door is in a locked state.

[0014] Preferably, the transmission assembly comprises a locking block, and the locking pin is used to abut against a side of the locking block away from the cam.

[0015] Preferably, the transmission assembly comprises two cam blocks which are arranged on opposite sides of the cam along the axial direction of the rotating shaft, and the cam is embedded between the two cam blocks.

[0016] Preferably, the transmission assembly also includes a baffle plate respectively connected to the two cam blocks and covering the cam, the cam is provided with a driving hole, the driving hole is used to insert a tool and drive the cam to rotate by the tool, and the baffle plate is provided with an avoidance hole at a position corresponding to the driving hole.

[0017] Preferably, the locking assembly includes a locking shaft for passing through the box door and a locking wheel arranged on the locking shaft, the locking wheel is provided with a limiting flange, the limiting flange is used to be engaged with a preset limiting structure of the box body when the box door moves to a locked state, and the locking shaft is used to drive the locking wheel to rotate to a state where the limiting flange is toward the limiting structure or the limiting flange is away from the limiting structure.

[0018] According to a second aspect of the utility model, there is also provided a mining explosion-proof box, comprising a box body and a box door, wherein the mining explosion-proof box further comprises the above-mentioned cam door opening device, wherein the cam door opening device is arranged between the box body and the box door.

[0019] The utility model has the following beneficial effects:

[0020] The cam door opening device provided by the utility model cooperates with the cam and the transmission component. When the driving cam rotates, the box door can be driven to move along the axial direction of the rotating shaft, thereby driving the locking component to be connected to the preset limiting structure of the box body or to disengage from the limiting structure, so that the box door cannot be rotated relative to the box body to open when it moves along the axial direction of the rotating shaft to a locked state, and can be rotated relative to the box body to open when it moves along the axial direction of the rotating shaft to an unlocked state, thereby realizing the locking or unlocking of the box door. The structure is simple and compact, the space is small, the installation is convenient and quick, and the use effect is good.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 A three-dimensional diagram of a mining explosion-proof box provided by an embodiment of the utility model;

[0024] Figure 2 for Figure 1 The three-dimensional picture of the mining explosion-proof box with the door removed;

[0025] Figure 3 for Figure 1 The front view of the door of the mining explosion-proof box is shown in a locked state;

[0026] Figure 4 for Figure 1 The front view of the mining explosion-proof box with the door in the unlocked state is shown.

[0027] Legend:

[0028] 1000, cam door opening device; 1, rotating shaft; 2, hinge; 21, first hinge; 22, second hinge; 3, transmission assembly; 31, locking block; 32, cam block; 33, baffle; 331, avoidance hole; 4, locking assembly; 41, locking shaft; 42, locking wheel; 5, cam; 51, driving hole; 61, first limit block; 62, second limit block; 63, support seat; 631, guide slope; 7, locking pin; 2000, box body; 3000, box door. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0030] Figures 1 to 4 The utility model embodiment shows a mining explosion-proof box and a cam door opening device thereof, wherein the cam door opening device is used to be installed between the box body and the box door of the mining explosion-proof box, hinges the box door and the box body into a whole and realizes the locking or unlocking of the box door, has a simple and efficient structure, and occupies little space.

[0031] like Figure 1 and Figure 2 As shown, the cam door opening device 1000 includes a rotating shaft 1, a hinge 2, a transmission assembly 3, a locking assembly 4 and a cam 5. The rotating shaft 1 is used to be fixedly mounted on the box body 2000, the hinge 2 can be slidably mounted on the rotating shaft 1 relative to the rotating shaft 1 and is used to connect with the box door 3000, so that the box door 3000 is hinged relative to the box body 2000, the transmission assembly 3 and the locking assembly 4 are both used to be installed on the box door 3000, the cam 5 is used to be rotatably mounted on the box body 2000 and embedded in the transmission assembly 3, and the cam 5 is used to be driven to rotate and push the transmission assembly 3 to move along the axial direction of the rotating shaft 1 when rotating.

[0032] Please combine Figure 3 and Figure 4 When the cam 5 is driven to rotate, it can push the transmission assembly 3 to move axially along the rotating shaft 1, thereby driving the box door 3000 and the hinge 2 to move axially along the rotating shaft 1, driving the box door 3000 to move axially along the rotating shaft 1 to a locked state or an unlocked state. The locking assembly 4 is used to be connected to the preset limiting structure of the box body 2000 when the box door 3000 moves axially along the rotating shaft 1 to the locked state, so as to achieve the locking and fixing of the box door 3000 relative to the box body 2000. The locking assembly 4 is also used to disengage from the limiting structure when the box door 3000 moves axially along the rotating shaft 1 to the unlocked state, so as to achieve the unlocking of the box door 3000 relative to the box body 2000. At this time, the box door 3000 can be rotated to open with the assistance of the hinge 2.

[0033] Specifically, the cam door opening device 1000 drives the cam 5 to rotate through the cooperation between the cam 5 and the transmission assembly 3, and can drive the box door 3000 to move axially along the rotating shaft 1, thereby driving the locking assembly 4 to be engaged with the preset limiting structure of the box body 2000 or disengage from the limiting structure, so that the box door 3000 cannot be rotated and opened relative to the box body 2000 when it moves axially along the rotating shaft 1 to a locked state, and can be rotated and opened relative to the box body 2000 when it moves axially along the rotating shaft 1 to an unlocked state, thereby realizing the locking or unlocking action of the box door 3000. The structure is simple and compact, the space is small, the installation is convenient and quick, and the use effect is good.

[0034] Preferably, the cam door opening device 1000 further includes a first stop block 61 and a second stop block 62 respectively arranged at two axial ends of the rotating shaft 1, and the hinge 2 includes a first hinge 21 and a second hinge 22 arranged at intervals along the axial direction of the rotating shaft 1, the first hinge 21 is used to abut against the first stop block 61 when the door 3000 moves to a locked state, and the second hinge 22 is used to abut against the second stop block 62 when the door 3000 moves to an unlocked state. The cam door opening device 1000 realizes the positioning of the door 3000 when locked through the cooperation of the first stop block 61 and the first hinge 21, and realizes the positioning of the door 3000 when unlocked through the cooperation of the second stop block 62 and the second hinge 22, so as to facilitate and quickly drive the door 3000 to lock or unlock, and the door 3000 is supported by two hinges 2, so as to improve the stability of the door 3000 and prevent the door 3000 from loosening.

[0035] Preferably, the rotating shaft 1 is arranged along the vertical direction, the first limit block 61 is arranged at the bottom end of the rotating shaft 1, the second limit block 62 is arranged at the top end of the rotating shaft 1, and a support seat 63 is provided on one side of the first limit block 61, and the support seat 63 is used to support the first hinge 21 after the box door 3000 is in an unlocked state and rotated open relative to the box body 2000. Specifically, when the box door 3000 is in a locked state, the first hinge 21 is supported by the first limit block 61, so that the box door 3000 can be stably supported. When the box door 3000 moves up and is in an unlocked state, the first hinge 21 is disengaged from the first limit block 61. At this time, the box door 3000 is only supported by the cam 5. After the box door 3000 is rotated to open relative to the box body 2000, the first hinge 21 is rotated to the top of the support seat 63. The first hinge 21 is supported by the support seat 63, which can strengthen the support of the box door 3000 and prevent the box door 3000 from falling.

[0036] Preferably, a guiding slope 631 is provided on the support seat 63, and the guiding slope 631 is used to guide the first hinge 21 to slide into the upper surface of the support seat 63, thereby improving the opening smoothness of the door 3000 and preventing the support seat 63 from getting stuck and the door 3000 from opening normally.

[0037] Preferably, the cam door opening device 1000 also includes a locking pin 7 for being arranged in the box body 2000, and the locking pin 7 is used to move out relative to the box body 2000 and lock the transmission assembly 3 when the box door 3000 is in a locked state, so that the transmission assembly 3 cannot be pushed by the cam 5, thereby realizing multiple locking of the box door 3000.

[0038] Furthermore, the transmission assembly 3 includes a locking block 31, and the locking pin 7 is used to abut against a side of the locking block 31 away from the cam 5, so that the limiting structure is simple and efficient.

[0039] Furthermore, the transmission assembly 3 includes two cam blocks 32 which are arranged on opposite sides of the cam 5 along the axial direction of the rotating shaft 1, the locking block 31 and the two cam blocks 32 are welded to the box door 3000, and the cam 5 is embedded between the two cam blocks 32. The two cam blocks 32 are respectively subjected to force on both sides of the cam 5, so that the cam 5 can smoothly drive the box door 3000 to translate when it rotates.

[0040] Preferably, the transmission assembly 3 further comprises a baffle plate 33 connected to the two cam blocks 32 respectively and covered on the cam 5, the cam 5 is provided with a driving hole 51, the driving hole 51 is used to insert a tool and drive the cam 5 to rotate by the tool, and the baffle plate 33 is provided with an avoidance hole 331 at a position corresponding to the driving hole 51. Specifically, the rotation center of the cam 5 is eccentrically arranged, and the driving hole 51 is coaxially arranged relative to the rotation center of the cam 5, and the driving hole 51 is used to insert a driving tool such as a manual wrench, an electric wrench, etc., so as to drive the cam 5 to rotate.

[0041] like Figure 2As shown, the locking assembly 4 includes a locking shaft 41 for passing through the box door 3000 and a locking wheel 42 arranged on the locking shaft 41, the locking wheel 42 is circumferentially fixed relative to the locking shaft 41, and a limiting flange is provided on the locking wheel 42, the limiting flange is used to be clamped on the limiting structure preset on the box body 2000 when the box door 3000 moves to the locked state, and the locking shaft 41 is used to drive the locking wheel 42 to rotate, so as to drive the limiting flange to rotate to a state facing the limiting structure or to drive the limiting flange to rotate to a state away from the limiting structure. That is, the locking wheel 42 can be locked or unlocked relative to the limiting structure by rotating the locking shaft 41, so that the locking assembly 4 can be used to unlock the box door 3000 when it fails and cannot be lifted.

[0042] As a second aspect, the embodiment of the utility model further provides a mining explosion-proof box, comprising a box body 2000 and a box door 3000, and the above-mentioned cam door opening device 1000, wherein the cam door opening device 1000 is arranged between the box body 2000 and the box door 3000. The locking or unlocking action of the box door 3000 is realized by the cam door opening device 1000, the structure is simple and compact, the space occupied is small, the installation is convenient and quick, and the use effect is good.

[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cam door opening device, used to be installed between a box body (2000) and a box door (3000) of a mining explosion-proof box, characterized in that: The cam door opening device comprises a rotating shaft (1), a hinge (2), a transmission assembly (3), a locking assembly (4) and a cam (5); The rotating shaft (1) is used to be fixedly mounted on the box body (2000); The hinge (2) is sleeved on the rotating shaft (1) and is used to connect with the box door (3000), so that the box door (3000) is hinged relative to the box body (2000); The transmission assembly (3) and the locking assembly (4) are both used for being installed on the box door (3000); The cam (5) is used to be rotatably mounted on the box body (2000), and the cam (5) is used to be driven to rotate and push the transmission assembly (3) to move axially along the rotating shaft (1) when rotating, thereby driving the box door (3000) and the hinge (2) to move axially along the rotating shaft (1), and the locking assembly (4) is used to be connected to a preset limiting structure of the box body (2000) when the box door (3000) moves axially along the rotating shaft (1) to a locked state, and the locking assembly (4) is also used to disengage from the limiting structure when the box door (3000) moves axially along the rotating shaft (1) to an unlocked state.

2. The cam door opening device according to claim 1, characterized in that: The cam door opening device also includes a first limit block (61) and a second limit block (62) respectively arranged at the axial ends of the rotating shaft (1); the hinge (2) includes a first hinge (21) and a second hinge (22) arranged at intervals along the axial direction of the rotating shaft (1); the first hinge (21) is used to abut against the first limit block (61) when the box door (3000) moves to a locked state; the second hinge (22) is used to abut against the second limit block (62) when the box door (3000) moves to an unlocked state.

3. The cam door opening device according to claim 2, characterized in that: The rotating shaft (1) is arranged along the vertical direction, the first limit block (61) is arranged at the bottom end of the rotating shaft (1), the second limit block (62) is arranged at the top end of the rotating shaft (1), and a support seat (63) is provided on one side of the first limit block (61), and the support seat (63) is used to support the first hinge (21) after the box door (3000) is in an unlocked state and rotates relative to the box body (2000) to open.

4. The cam door opening device according to claim 3, characterized in that: The support seat (63) is provided with a guiding inclined surface (631), and the guiding inclined surface (631) is used to guide the first hinge (21) to slide into the upper surface of the support seat (63).

5. The cam door opening device according to claim 1, characterized in that: The cam door opening device also includes a locking pin (7) for being arranged in the box body (2000), and the locking pin (7) is used to move out relative to the box body (2000) and lock the transmission assembly (3) when the box door (3000) is in a locked state.

6. The cam door opening device according to claim 5, characterized in that: The transmission assembly (3) comprises a locking block (31), and the locking pin (7) is used to abut against a side of the locking block (31) away from the cam (5).

7. The cam door opening device according to claim 1, characterized in that: The transmission assembly (3) comprises two cam blocks (32) which are arranged on opposite sides of the cam (5) along the axial direction of the rotating shaft (1), and the cam (5) is embedded between the two cam blocks (32).

8. The cam door opening device according to claim 7, characterized in that: The transmission assembly (3) further comprises a baffle (33) respectively connected to the two cam blocks (32) and covered on the cam (5); the cam (5) is provided with a driving hole (51); the driving hole (51) is used for inserting a tool and driving the cam (5) to rotate by the tool; and the baffle (33) is provided with an avoidance hole (331) at a position corresponding to the driving hole (51).

9. The cam door opening device according to claim 1, characterized in that: The locking assembly (4) comprises a locking shaft (41) for passing through the box door (3000) and a locking wheel (42) arranged on the locking shaft (41); a limiting flange is provided on the locking wheel (42); the limiting flange is used to be engaged with a preset limiting structure of the box body (2000) when the box door (3000) moves to a locked state; the locking shaft (41) is used to drive the locking wheel (42) to rotate to a state in which the limiting flange is toward the limiting structure or the limiting flange is away from the limiting structure.

10. A mining explosion-proof box, comprising a box body (2000) and a box door (3000), characterized in that: The mining explosion-proof box further comprises a cam door opening device as described in any one of claims 1 to 9, wherein the cam door opening device is arranged between the box body (2000) and the box door (3000).

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