CN215332915U - Clamping mechanism and roadway roof supporting equipment - Google Patents
Clamping mechanism and roadway roof supporting equipment Download PDFInfo
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- CN215332915U CN215332915U CN202121618949.XU CN202121618949U CN215332915U CN 215332915 U CN215332915 U CN 215332915U CN 202121618949 U CN202121618949 U CN 202121618949U CN 215332915 U CN215332915 U CN 215332915U
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Abstract
The utility model relates to a clamping mechanism and roadway roof support equipment, wherein the clamping mechanism comprises a mechanism frame, a reciprocating rack square pin, a pressing device, a baffle and a gear, wherein the upper end and the lower end of the reciprocating rack square pin vertically penetrate through the mechanism frame and are in sliding connection with the mechanism frame; the supporting equipment comprises a supporting device and a plurality of clamping mechanisms which are arranged on the supporting device at intervals in the front-back direction, the installation number and the interval distance are determined according to the length of a steel strip to be clamped, and the baffle plates of the clamping mechanisms are positioned on the same side in the left-right direction. The utility model has simple action, stable and reliable clamping and easy top attachment.
Description
Technical Field
The utility model relates to a steel belt clamping device and a coal mine roadway top steel belt supporting device applying the same.
Background
At present, a steel wire mesh, a steel belt and an anchor rod anchor cable structure are generally adopted for coal mine roadway support. The steel wire mesh is placed on the steel belt, the steel belt is placed on the horizontal bracket, and the steel belt slowly rises along with the horizontal bracket. Because the steel band appears dropping and rocking easily at the in-process that rises, steel band self is heavier, and the position that pastes the top is also higher, and artifical adjustment is difficult, and the progress of construction is seriously influenced to the position of adjustment steel band.
The technical means for preventing or reducing the shaking and even the falling of the steel belt at present include that 1, a clamping groove is welded on a supporting device, the width direction of the steel belt is limited in the clamping groove when the steel belt supporting device is used, the groove interval of the clamping groove is slightly larger than the width of the steel belt, and the steel belt can be prevented from shaking too much. 2. And mounting magnets on the supporting device, controlling the attraction force of the magnets, and clamping the steel belt by virtue of the attraction force of the magnets. The disadvantage of this method is that the magnet is fragile by collision, the magnetic force is easily lost with time, and the magnetic force of the magnet is difficult to control. 3. The first two are mixed for use. 4. Other hydraulic electric mechanisms have the defects of complex structure, large size, difficult installation and need of coal safety certification.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a clamping mechanism and roadway roof supporting equipment, wherein the clamping mechanism is simple in action, stable and reliable, does not need external power, is stably clamped in the supporting process, does not shake or loosen a steel belt, and is easy to be attached to the roof.
The main technical scheme of the utility model is as follows:
a clamping mechanism comprises a mechanism frame, a reciprocating rack square pin, a pressing device, a baffle and a gear, wherein the reciprocating rack square pin is installed on the mechanism frame, the mechanism frame comprises a top platform and a support for supporting the top platform from the middle part below, the bottom of the support is a bottom flat plate, the upper end and the lower end of the reciprocating rack square pin vertically penetrate through the top platform and the bottom flat plate of the mechanism frame respectively and are in sliding connection with the top platform and the bottom flat plate respectively, the top surface of the reciprocating rack square pin is a plane, a limiting boss extending transversely outwards is arranged in the middle of the reciprocating rack square pin, a compression spring is sleeved on the reciprocating rack square pin between the limiting boss and the bottom flat plate, a vertical rack structure is arranged in an area above the limiting boss on the reciprocating rack square pin, the baffle is vertically and fixedly connected above the top platform, two ends of the gear are rotatably connected below the top platform, and the axis of the gear extends forwards and backwards, the gear is externally meshed with the vertical rack structure, the pressing device is connected with the mechanism framework in a sliding mode left and right mode, the upper portion of a pressing plate of the pressing device penetrates through a window in the top platform upwards and is opposite to the face of the baffle left and right, other portions of the pressing device are located below the top platform, a horizontal rack structure in the pressing device is externally meshed with the gear, the pressing plate is driven to be close to the baffle through the vertical rack structure, the gear and the horizontal rack structure when the reciprocating rack square pin moves downwards, the reciprocating rack square pin in the left and right direction is located between the pressing plate and the baffle, and the distance between the pressing plate and the baffle in a normal state is larger than the width of a steel strip to be clamped.
Closing device still includes round axle pin and rack, round axle pin, pressure strip and rack fixed connection in proper order, and wherein round axle pin and rack are about horizontal extension, and the pressure strip is then vertical setting, and round axle pin and rack all are located the below of top platform, and spacing curb plate and sliding sleeve and relative spacing curb plate and sliding sleeve horizontal sliding connection on the mechanism frame are passed respectively to the outer end of round axle pin and the outer end of rack, and the rack acts as horizontal rack structure, the shape of cross section of rack are the rectangle, and the cover has extension spring on the round axle pin, extension spring's both ends respectively with spacing curb plate and pressure strip fixed connection.
The two racks are arranged at intervals front and back, and the pressing plate and the round shaft pin are arranged in the middle front and back of the two racks.
In the front-back direction, the reciprocating rack square pin is positioned between the two racks.
The pressing device is preferably of a symmetrical structure.
Two supporting seats in front and back are further installed below the top platform, and shaft necks at two ends of the gear are rotatably connected with the corresponding supporting seats.
The roadway roof supporting equipment comprises a supporting device and a plurality of clamping mechanisms, wherein the clamping mechanisms are arranged on the supporting device at intervals from front to back, the installation number and the interval distance are determined according to the length of a steel strip to be clamped, and baffles of the clamping mechanisms are positioned on the same side of the left side or the right side.
The utility model has the beneficial effects that:
the clamping mechanism is simple in action, stable and reliable.
Clamping mechanism is pure mechanical device, relies on spring force, rack and pinion transmission and the steel band dead weight have or not spontaneous realization steel band press from both sides tightly and loosen, need not external power, compares and adopts electronic, hydraulic drive mode, simple structure, small, does not need coal ann to authenticate moreover.
The clamping mechanism is adopted to participate in steel belt supporting at the top of the roadway, and the steel belt is stably clamped and cannot shake or loosen in the ascending process. Because the uppermost surface of the clamping mechanism can be close to the uppermost height of the steel strip, the steel strip can be attached to the top when the steel strip is lifted to the top. After the steel belt is fixed at the top of the coal roadway, the clamping mechanism can be automatically opened and smoothly separated from the steel belt.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a clamping mechanism of the present invention;
FIG. 2 is a partial, lower, structural view of the top platform of the clamping mechanism of FIG. 1;
fig. 3 is a partial structural schematic view of the roadway roof supporting apparatus.
Reference numerals: 1. round pin, 2, extension spring, 3, pressure plate, 4, reciprocating rack square pin, 5, mechanism frame, 5-1, top platform; 5-2. bottom plate; 6, a W-shaped steel belt, 7, a baffle, 8, a compression spring, 9, a gear, 10, a rack, 11, a limiting side plate, 12, a sliding sleeve and A, wherein the sliding sleeve is provided with a clamping mechanism.
Detailed Description
As shown in fig. 1, 2 and 3, the utility model discloses a clamping mechanism A, which comprises a mechanism frame 5, a reciprocating rack square pin 4, a pressing device, a baffle 7 and a gear 9, wherein the reciprocating rack square pin 4, the pressing device, the baffle 7 and the gear 9 are arranged on the mechanism frame. The mechanism frame is an installation foundation of all components of the clamping mechanism and comprises a top platform 5-1 and a support for supporting the top platform from the middle part below, the bottom of the support is a bottom flat plate 5-2, the cross section of a reciprocating rack square pin is rectangular, and the upper end and the lower end of the support vertically penetrate through the top platform 5-1 and the bottom flat plate 5-2 respectively and are connected with the top platform and the bottom flat plate in a sliding mode respectively. The top surface of the reciprocating rack square pin is a plane and is used for supporting the steel belt. The area of the top surface of the reciprocating rack square pin can be larger as much as possible, for example, a flat plate can be independently arranged, and the top surface of the flat plate is used as the top surface of the reciprocating rack square pin. The middle part of the reciprocating rack square pin is provided with a limiting boss which extends transversely outwards, a compression spring 8 is sleeved on the reciprocating rack square pin between the limiting boss and the bottom flat plate, and a vertical rack structure is arranged in an area above the limiting boss on the reciprocating rack square pin.
The baffle is of a flat plate structure and is fixedly connected above the top platform in a vertical mode, and the baffle is used for positioning a long edge of the steel strip.
The both ends swivelling joint of gear is in the below of top platform, and the axis of gear extends around. The gear is meshed with the vertical rack structure, and the reciprocating rack square pin is lifted and lowered to drive the gear to rotate through the vertical rack structure.
The pressing device is connected with the mechanism frame in a left-right sliding mode, the upper portion of a pressing plate 3 on the pressing device penetrates through a window in the top platform upwards and is opposite to the plate surface of the baffle 7 in the left-right mode, and other portions of the pressing device are located below the top platform. And a horizontal rack structure on the pressing device is externally meshed with the gear, and the pressing plate is driven to be close to the baffle plate through the sequential transmission of the vertical rack structure, the gear and the horizontal rack structure when the reciprocating rack square pin moves downwards. The pressing plate is close to and far from the baffle plate to clamp and release the steel belt respectively. The reciprocating rack square pin in the left and right direction is positioned between the pressing plate and the baffle. The space between the hold-down plate and the baffle above the top surface of the reciprocating rack square pin is used for placing a steel belt (e.g., a W-shaped steel belt 6 in fig. 1). The distance between the pressing plate and the baffle is larger than the width of the steel belt to be clamped in a normal state, and the clamping mechanism is in an open state, so that the steel belt is conveniently placed on the top surface of the reciprocating rack square pin.
The pressing device can further comprise a round shaft pin 1 and a rack 10 besides the pressing plate, the round shaft pin, the pressing plate and the rack are fixedly connected in sequence, the round shaft pin and the rack horizontally extend from left to right, and the pressing plate is vertically arranged. The round shaft pin and the rack are both positioned below the top platform, the outer end of the round shaft pin (equivalent to the left end in fig. 1) and the outer end of the rack (equivalent to the right end in fig. 1) respectively penetrate through the limiting side plate 11 and the sliding sleeve 12 on the mechanism frame and are in sliding connection with the limiting side plate and the sliding sleeve left and right, and the rack serves as the horizontal rack structure. In this embodiment, the pressing plate is a T-shaped plate with a narrow top and a wide bottom. The cross section of the rack is rectangular, the hole in the sliding sleeve, which is connected with the rack in a sliding mode, is also a rectangular hole, and the front-back swing of the pressing device in the reciprocating movement process can be greatly reduced due to the matching surface of the rectangular cross section. An extension spring 2 is sleeved on the round shaft pin 1, and two ends of the extension spring are respectively and fixedly connected with the limiting side plates and the lower parts of the pressing plates. Through setting up round pin axle and extension spring, can avoid the interference of other direction external forces outside the left and right sides direction, more smooth and easy and closing device resets smoothly when making closing device horizontal slip.
In this embodiment, two racks are preferably provided, and the two racks are arranged at intervals in front of and behind each other. The pressing plate and the round shaft pin are arranged in the middle from front to back relative to the two racks, and compared with a pressing device adopting one rack, the clamping mechanism can more stably drive the steel belt to ascend, and the front and back shaking is avoided.
In the front-back direction, the reciprocating rack square pin is positioned between the two racks.
The pressing device is preferably of a symmetrical structure.
Two supporting seats around still installing in the below of top platform, the both ends axle journal of gear and the supporting seat swivelling joint that corresponds can direct contact between axle journal and the supporting seat, also can set up the bearing. In this embodiment, the horizontal rack structure is located between the front and rear two supporting seats. When there are two racks, the two racks are simultaneously externally engaged with the front and rear portions of the gear.
When the W-shaped steel belt is placed on the reciprocating rack square pin, the distance from the highest position of the baffle plate and the pressure plate (also the highest position of the whole clamping mechanism) to the top surface of the reciprocating rack square pin is slightly larger than the thickness of the steel belt, so that the steel belt is convenient to adhere to the top while the stable clamping of the steel belt is ensured.
The elasticity of the compression spring is to ensure that when the W-shaped steel belt is placed on the reciprocating rack square pin, the bottom of the steel belt is close to the top platform 5-1 as much as possible but is not in contact with the top platform.
The utility model also discloses roadway roof supporting equipment, which comprises a supporting device and the clamping mechanisms A, wherein the clamping mechanisms A are arranged on the supporting device at intervals from front to back, the installation number and the interval distance are determined according to the length of a steel strip to be clamped, and the baffles of the clamping mechanisms are positioned on the same side from left to right.
The clamping mechanisms are of the same specification and size, and when no steel belt is placed, the top surfaces of all the reciprocating rack square pins are located on the same horizontal plane.
When the clamping mechanisms are adopted to support the top plate, a group (a plurality of) of clamping mechanisms A are arranged on the supporting device at intervals from front to back aiming at roadways extending in the left-right direction, the installation number and the interval distance are determined according to the length of a steel belt, and the baffles of the clamping mechanisms are positioned on the same side of the left side or the right side. The steel belt is placed at the tops of all reciprocating rack square pins of the group of clamping mechanisms, all reciprocating rack square pins simultaneously lift the same steel belt, one long edge of the steel belt leans against a side plate on the corresponding side, under the self-weight action of the steel belt, each reciprocating rack square pin overcomes the elasticity of a compression spring and moves downwards, a vertical rack structure drives a gear to rotate, the gear drives a horizontal rack structure to overcome the elasticity of a reset spring and move in the left and right directions, a pressing plate is synchronously close to a baffle plate so as to clamp the steel belt, then a supporting device is operated to lift the steel belt, and after the steel belt is attached to the top, the steel belt is fixed to the top of a coal roadway through an anchoring rod or an anchor cable. And then the supporting device is operated to drive the clamping mechanism to move downwards, due to the reduction of the dead weight of the steel belt, all the reciprocating rack square pins move upwards to reset under the action of the compression spring, the vertical rack structure drives the gear to rotate, the gear drives the horizontal rack structure to move leftwards and rightwards again, all the pressing plates synchronously move to the direction far away from the baffle to reset under the combined action of gear and rack transmission and the extension spring, the clamping mechanism is completely separated from the steel belt, and the steel belt supporting is completed.
Claims (7)
1. A clamping mechanism, characterized by: the mechanism comprises a mechanism frame, a reciprocating rack square pin, a pressing device, a baffle and a gear, wherein the reciprocating rack square pin is arranged on the mechanism frame, the mechanism frame comprises a top platform and a support for supporting the top platform from the middle part below, the bottom of the support is a bottom flat plate, the upper end and the lower end of the reciprocating rack square pin vertically penetrate through the top platform and the bottom flat plate of the mechanism frame respectively and are in sliding connection with the top platform and the bottom flat plate respectively, the top surface of the reciprocating rack square pin is a plane, a limiting boss extending transversely outwards is arranged in the middle of the reciprocating rack square pin, a compression spring is sleeved on the reciprocating rack square pin between the limiting boss and the bottom flat plate, a vertical rack structure is arranged in an area above the limiting boss on the reciprocating rack square pin, the baffle is vertically and fixedly connected above the top platform, two ends of the gear are rotatably connected below the top platform, and the axis of the gear extends forwards and backwards, the gear is externally meshed with the vertical rack structure, the pressing device is connected with the mechanism framework in a sliding mode left and right mode, the upper portion of a pressing plate of the pressing device penetrates through a window in the top platform upwards and is opposite to the face of the baffle left and right, other portions of the pressing device are located below the top platform, a horizontal rack structure in the pressing device is externally meshed with the gear, the pressing plate is driven to be close to the baffle through the vertical rack structure, the gear and the horizontal rack structure when the reciprocating rack square pin moves downwards, the reciprocating rack square pin in the left and right direction is located between the pressing plate and the baffle, and the distance between the pressing plate and the baffle in a normal state is larger than the width of a steel strip to be clamped.
2. The clamping mechanism of claim 1, wherein: the pressing device further comprises a round shaft pin and a rack, the round shaft pin, the pressing plate and the rack are sequentially and fixedly connected, the round shaft pin and the rack are horizontally extended left and right, the pressing plate is vertically arranged, the round shaft pin and the rack are located below the top platform, one end of the cylindrical pin penetrates through a left sliding sleeve on the mechanism frame, the other end of the cylindrical pin is fixed on the left side face of the pressing plate, one end of the rack is fixed on the right side face of the pressing plate, the other end of the rack penetrates through a right sliding sleeve on the mechanism frame, the rack serves as the horizontal rack structure, the cross section of the rack is rectangular, an extension spring is sleeved on the round shaft pin, and two ends of the extension spring are fixedly connected with the left sliding sleeve and the pressing plate respectively.
3. The clamping mechanism of claim 2, wherein: the two racks are arranged at intervals front and back, and the pressing plate and the round shaft pin are arranged in the middle front and back of the two racks.
4. The clamping mechanism of claim 3, wherein: in the front-back direction, the reciprocating rack square pin is positioned between the two racks.
5. The clamping mechanism of claim 4, wherein: the pressing device is of a front-back symmetrical structure.
6. The clamping mechanism of claim 1, 2, 3, 4 or 5, wherein: two supporting seats in front and back are further installed below the top platform, and shaft necks at two ends of the gear are rotatably connected with the corresponding supporting seats.
7. The utility model provides a tunnel roof support equipment which characterized in that: the steel strip clamping device comprises a supporting device and the clamping mechanisms of claims 1, 2, 3, 4, 5 or 6, wherein a plurality of the clamping mechanisms are arranged on the supporting device at intervals from front to back, the installation number and the interval distance are determined according to the length of a steel strip to be clamped, and the baffle plates of the clamping mechanisms are positioned on the same left side or the same right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121618949.XU CN215332915U (en) | 2021-07-16 | 2021-07-16 | Clamping mechanism and roadway roof supporting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121618949.XU CN215332915U (en) | 2021-07-16 | 2021-07-16 | Clamping mechanism and roadway roof supporting equipment |
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| Publication Number | Publication Date |
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| CN215332915U true CN215332915U (en) | 2021-12-28 |
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| CN202121618949.XU Active CN215332915U (en) | 2021-07-16 | 2021-07-16 | Clamping mechanism and roadway roof supporting equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503175A (en) * | 2021-07-16 | 2021-10-15 | 天地上海采掘装备科技有限公司 | Clamping mechanism and method for fixing steel strip to top of roadway |
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2021
- 2021-07-16 CN CN202121618949.XU patent/CN215332915U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503175A (en) * | 2021-07-16 | 2021-10-15 | 天地上海采掘装备科技有限公司 | Clamping mechanism and method for fixing steel strip to top of roadway |
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