CN108756982A - A kind of sliding temporary support device of two degrees of freedom and its working method - Google Patents

Abstract

The invention discloses a two-degree-of-freedom sliding type temporary support device and its working method. The device includes a first support device, a second support device, a frame-moving driving device and a frame-moving auxiliary device, and the first support device It is connected with the second support device through the frame-moving driving device and the frame-moving auxiliary device. The bottom of the first support device is equipped with a bottom-lifting device that facilitates sliding and advancing. Under the joint action of the frame-moving driving device and the frame-moving auxiliary device, Realize the automatic sliding of the sliding temporary support device to advance to the designated working position. The first support device and the second support device adopt a structure composed of two sets of three linear drive devices and a hinge connection, so that the jacking support has two degrees of freedom. The invention solves the problem that the whole device is prone to be skewed when the roadway ground and the top surface are not parallel. At the same time, no auxiliary equipment is needed when moving the frame, the moving step is large, the support is more safe and reliable, and it has high working efficiency and high degree of automation. The advantage of good adaptability on the top surface of the roadway.

Description

A two-degree-of-freedom sliding temporary support device and its working method

technical field

The invention relates to a sliding type temporary support device, in particular to a two-degree-of-freedom sliding type temporary support device and a working method thereof, belonging to the technical field of underground mining machinery and equipment.

Background technique

With the improvement of the degree of mechanization of coal mining, in order to meet the installation requirements of large-scale fully mechanized mining equipment, the width of cutting holes in many fully mechanized mining faces is designed to be 8m to 10m. For super-large-span cut-out construction, the main form of support for the cut-out in the fully mechanized mining face is shed support. The construction space of the roadway with shed support is small, which makes it difficult to install and construct the support. At the same time, the shed support is a passive support and cannot Effectively improve the bearing strength of surrounding rock finishing, the support method not only has high support costs and labor intensity, but also seriously threatens the normal production of mine safety and restricts the development of safe and efficient production of mines. Compared with passive support, the active support bolt support can make full use of the self-supporting capacity of the surrounding rock to change the load body into a bearing body, and maintain a high support resistance for the surrounding rock. However, in view of the structural characteristics of the super-large-span cut hole, the complex geological conditions of the surrounding rock, and the stress concentration caused by the secondary expansion, the use of conventional bolt support with strong concealment will make the deformation of the roadway surrounding rock particularly serious. , especially during the second expansion, it is easy to cause a large safety hazard, it is difficult to meet the requirements of controlling the stability of the surrounding rock of the roadway, and it cannot meet the requirements of safe construction of ultra-large-span cutting holes.

Compared with the traditional installation method, the existing synchronous method of side expansion installation not only improves the safety, but also saves time and materials. The synchronous method of side expansion and installation adopts the method of side expansion and side installation, which greatly shortens the project cycle, changes the traditional operation mode of first digging the roadway and then expanding the side, and solves the safety hazards brought by the traditional empty roof operation, which can greatly It saves the related costs of bolting, anchoring cables, laying safety nets, etc. This process can also recover caving coal that cannot be recovered by traditional processes, which greatly reduces the supporting staff on the working face and saves labor costs.

Among them, the two-degree-of-freedom sliding temporary support device is one of the important core equipment in the synchronous method of side expansion installation, but the existing commonly used equipment has some defects in the process of use, mainly in the following areas:

1. The lifting mechanism of the existing temporary support device adopts a fixed sliding sleeve structure. When the roadway ground and the top surface are not parallel, the device is prone to the problem of overall skew and cannot support the roof well;

2. Due to the heavy weight of the existing temporary support device, the working resistance of moving the frame is relatively large. When the slope of the cutting eye is large, it is difficult to move the frame, and other devices are needed to assist in the movement, which has high requirements for the use environment;

3. The existing temporary support device has a short step distance, and each cycle needs to be lowered and moved forward several times, which has a great impact on the roof of the roadway;

4. The existing supporting device has an empty roof period in the top support during the frame moving process, which is prone to fall and hurt people.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the present invention designs a two-degree-of-freedom sliding type temporary support device and its working method. At the same time, no auxiliary equipment is needed when moving the frame, the moving step is large, and the support is safer and more reliable.

In order to solve the above problems, the present invention provides a two-degree-of-freedom sliding temporary support device, which includes a first support device, a frame-moving driving device and a second support device, and the first support device includes a first support top plate, The first support bottom plate and the first lifting mechanism connected between the first support top plate and the first support bottom plate, the second support device includes the second support top plate, the second support bottom plate and the second support The second lifting mechanism between the roof guard and the second support base, and the moving frame driving device is connected between the first support base and the second support base;

The first supporting device also includes a first temporary supporting board and a temporary supporting board driving device; the second supporting device also includes a second temporary supporting board and a temporary supporting board driving device; the first lifting mechanism includes a Two sets of first lifting devices and two sets of first lifting adjustment devices located on the outside, the second lifting mechanism includes two sets of second lifting devices located on the inside and two sets of second lifting adjustment devices located on the outside;

The first lifting device and the second lifting device have the same structure, and both include a first linear drive device, a lifting device connecting hinge d and a lifting device connecting hinge a, and the upper end of the first linear driving device is connected by the lifting device connecting hinge d. On the support top plate, the lower end of the first linear drive device is connected to the support bottom plate through the lifting device connecting hinge a;

The first lifting adjustment device and the second lifting adjustment device have the same structure, and both include a second linear drive device, a third linear drive device, a lifting device connecting hinge b, a lifting device connecting hinge c and a lifting device connecting hinge e, and the lifting device connecting hinge b and the lifting device connection hinge c are fixed on the top of the first support bottom plate or the second support bottom plate, the lifting device connection hinge e is fixed on the first support top plate or the second support top plate, the second linear drive device and the third The upper end of the linear driving device is jointly connected to the connecting hinge e of the lifting device, and the lower ends of the second linear driving device and the third linear driving device are respectively hinged on the connecting hinge b of the lifting device and the connecting hinge c of the lifting device;

Both the first support top plate and the second support top plate have a rectangular cavity, and the first temporary support plate is set in the cavity of the first support top plate and is driven by the temporary support plate driving device to the two sides. The side protrudes or retracts, and the second temporary support plate is sleeved in the cavity of the second support top plate and is protruded or retracted to both sides under the drive of the temporary support plate driving device.

The first temporary support plate can move left or right in the first support top plate under the driving of the temporary support plate driving device; the second temporary support plate can move in the second temporary support plate driving device. The support top plate moves to the left or right; under the action of the linear drive device for moving the frame, the first bottom plate and the second bottom plate can produce relative movement in the horizontal direction, so that the sliding temporary support device can automatically move along the working direction Mobile, this structure can make the device always have a support plate to support the roof during the moving and working, and form two temporary support areas on the roof of the roadway, so that during the brushing operation, the temporary support The roof of the roadway protects the safety of personnel and equipment, and avoids the occurrence of gangue injury and equipment damage; the lifting mechanism includes a lifting device that can move the supporting roof upward in the vertical direction, and can make the supporting roof move around The lifting adjustment device that is connected to the rotation of the hinge e makes the support device have good adaptability to the situation that there is a large angle between the roadway ground and the roof in the advancing direction. Therefore, under the combined action of the first support device and the second support device, the lifting adjustment device, the support roof, the temporary support plate, and the temporary support plate driving device, the support roof is lifted, and then the top surface of the roadway is adapted. Permanent support, the temporary support plate expands and contracts to carry out the support action of temporary support.

Further, the temporary support plate driving device includes a speed-increasing gear set, a gear slider seat, a temporary linear driving device, a fixed rack and a movable rack, the fixed rack is fixedly connected to the fixed guide rail, and the fixed guide rail is fixed on the first branch. The lower end of the top protection plate or the second support top plate, the movable rack is fixed on the lower end of the first temporary support plate or the second temporary support plate, and one end of the temporary linear drive device is connected to the hinge a and the first support top plate through the temporary drive device Or the second support top plate is connected, and the other end is connected with the gear slider seat through the temporary driving device connecting hinge b, the speed-increasing gear set is installed on the gear slider seat, and the gear slider seat is clamped on the fixed guide rail and can be moved along the The guide rail slides, and the bottom of the first support top plate and the second support top plate has a long hole. The opening position of the long hole, the installation position of the movable rack and the large gear in the speed-up gear set are on the same vertical plane, and the fixed gear The mounting position of the bar is in the same vertical plane as the pinion in the speed-up gear set, the bull gear in the speed-up gear set meshes with the movable rack on the upper end, and the pinion meshes with the fixed rack on the lower end.

Since the length of the temporary support plate and the support roof is not much different, and the temporary support plate needs to protrude from both ends of the support roof, the limit working stroke of the temporary support plate is longer, and the driving point of the temporary support plate The position also needs to move following the movement of the temporary support plate. The telescopic movement of the temporary linear drive device drives the speed-increasing gear set and the gear slider seat to move along the fixed guide rail. Since the fixed rack is fixed on the fixed guide rail, the increase The gear on the high-speed gear set converts linear motion into rotary motion during the process of meshing with the fixed rack. The gear passes through the long holes at the bottom of the first support top plate and the second support top plate and connects with the first temporary support plate or the second support plate. The movable racks at the bottom of the two temporary support plates are engaged, and then drive the first temporary support plate or the second temporary support plate to extend or retract to both sides.

Further, an auxiliary device for moving the frame is also installed between the first support device and the second support device, and the auxiliary device for moving the frame includes bottom lifting guide rails and Guide rail linear drive device, one end of the guide rail linear drive device is connected to the middle part of the bottom lifting guide rail through the guide rail connection hinge a, and the other end is connected to the lower right side of the second bottom plate through the guide rail connection hinge b.

After the first supporting device moves, the guide rail linear drive device pulls the bottom lifting guide rail to the designated working position, which is convenient for the next working cycle.

Further, a bottom-lifting mechanism is provided at the four corners of the lower end of the first bottom plate, and the bottom-lifting mechanism includes a bottom-lifting linear drive device connected to the first bottom plate, and the other end of the bottom-lifting linear drive device is connected with a bottom-lifting slider. The bottom slide block can slide in the vertical direction at the lower end of the first base plate, and bottom lift rollers are installed on the bottom lift slide block, and the bottom lift rollers can slide on the bottom lift guide rails.

Further, there are guide grooves on both sides of the lower ends of the first bottom plate and the second bottom plate, and the bottom-lifting guide rail is clamped in the guide groove, and the bottom of the guide rail is flush with the bottom of the second bottom plate.

During the support operation, the linear drive device does not work, and the first bottom plate and the bottom lifting guide rail touch the ground at the same time, which increases the stability of the sliding temporary support device; when the first support device moves forward, the linear drive device The work stretches out upwards, so that the first base plate leaves the ground, and the load of the first support device is introduced into the ground through four linear drive devices and the bottom-lifting guide rail successively. At this time, the bottom-lifting rollers are rolling on the bottom-lifting guide rail. Since the first support device is also equipped with an excavator for brushing operations, the friction between the moving first support device and the roadway ground is much larger than that between the second support device and the roadway ground , so use the bottom lifting mechanism to lift the first supporting device as a whole. When moving, the main resistance of the first supporting device to move is the rolling friction force of the bottom lifting roller on the bottom lifting guide rail, which greatly reduces the first supporting device. When the protection device moves forward, it is convenient for the device to slide forward when the roadway ground has a certain slope.

A working method of a two-degree-of-freedom sliding type temporary support device, comprising the following steps:

The first step is to transport the device to the working face, debug and assemble, and other supporting equipment is ready;

In the second step, the sliding excavator drops the coal under the support of the two-degree-of-freedom sliding temporary support device, and the exposed roof is supported by the second temporary support plate on the second support device;

In the third step, the two temporary support plates in the second support device are retracted, and the first temporary support plate on the first support device stretches forward to protect the roof, and the second support device moves forward and then lowers the frame;

The fourth step, the second support device reaches the designated station for jacking support, the second temporary support plate on the second support device stretches back to protect the roof, and the first temporary support plate in the first support device Retract, the first support device lowers;

The fifth step, the second support device moves forward under the drag of the moving linear drive device, the second temporary support plate in the second support device stretches back to protect the roof, and the first temporary support plate in the first support device Rear extension protection of the support plate;

Step 6: The second temporary support plate in the second support device is retracted, the bottom lifting guide rail is moved forward and reset, the first support device is lifted and supported, and the hydraulic pressure for support is placed in the rear empty roof. bracket;

In the seventh step, the first temporary support plate in the first support device is retracted, and the hydraulic support is lifted for support.

The eighth step, repeating the first to seventh steps, can realize the temporary support and automatic sliding action of the two-degree-of-freedom sliding temporary support device.

The first linear drive device 3021, the second linear drive device 3022, the third linear drive device 3023, the rack moving linear drive device 2012, the bottom lifting linear drive device 1011, the guide rail linear drive device 2003, and the temporary linear drive device described herein 3056, when it is realized, linear drive devices such as hydraulic cylinders and electric cylinders can be used.

Compared with the prior art, the present invention has the advantages of:

1. The support top plate of the two-degree-of-freedom sliding temporary support device is connected by a movable hinge and a lifting device. The support top plate can have two movements, one is translation along the vertical direction, and the other is around the top plate. The lifting device connects the rotation of the hinge e. Because in actual working conditions, it is impossible to ensure a strict parallel relationship between the top surface and the ground of the roadway, the traditional jacking mechanism and its top and bottom are fixed. In this working condition, the jacking support will make the The uneven stress on the roof of the roadway will damage the roof of the roadway. At the same time, the equipment is prone to serious damage due to excessive local force. Because the supporting roof has two degrees of freedom, the present invention can well adapt to such harsh working conditions, so it has good adaptability to the condition that the roof of the roadway is not parallel to the ground;

2. The driving device of the temporary support plate adopts a special gear set and gear rack design, so that the temporary support plate can protrude from both sides of the support top plate. When moving and working, the first support device and the second support The middle part of the second support device is protected by a temporary support plate at the time of support, which avoids the occurrence of falling gangue injury and damage to equipment;

3. The device adopts the combination of bottom lifting device and guide rail. Because in actual work, when the temporary support device slides forward, the skid-steer excavator will be parked on the first support device. With this structure, the first supporting device with a large mass rolls forward on the bottom-lifting guide rail under the action of the guide rail linear drive device. It does not directly contact the ground during the advancement process, and the resistance during the advancement is small. At present, the equipment cannot work normally. When the moving cutout slope is large, the sliding forward performance is good;

4. And the temporary support plate can protrude from both sides of the support device, which can guarantee a longer effective area, making the device move a longer step distance, and each cycle only needs to be lowered and moved forward, which solves the problem of existing support The disadvantage that the device needs to be lowered and moved forward multiple times;

5. The working method of the sliding temporary support device mentioned in this law can greatly improve the working efficiency of the integrated process of brushing and safety. The temporary support device supports the roadway roof at the working surface and protects the equipment below it. and personnel, the hydraulic support at the back is to support the roof of the roadway for a long time.

Description of drawings

Fig. 1 is the overall structural representation of device of the present invention;

Fig. 2 is the structural representation of the second supporting device in the present invention;

Fig. 3 is a schematic diagram of the connection at the bottom of the present invention;

Fig. 4 is an exploded view of the bottom structure of the present invention;

Fig. 5 is the structural exploded view of temporary support plate driving device among the present invention;

Fig. 6 is the first step of working method among the present invention;

Fig. 7 is the second step of working method among the present invention;

Fig. 8 is the third step of working method among the present invention;

Fig. 9 is the 4th step of working method among the present invention;

Fig. 10 is the 5th step of working method among the present invention;

Fig. 11 is the 6th step of working method among the present invention;

Fig. 12 is the seventh step of working method among the present invention;

In the figure: 100-the first support device, 101-the first bottom plate, 102-the first lifting adjustment device, 103-the first support top plate, 104-the first temporary support plate, 200-moving auxiliary device, 201 -moving frame drive device, 300-second support device, 301-second bottom plate, 302-second lifting adjustment device, 303-second support top plate, 304-second temporary support plate, 305-temporary support Plate driving device, 3021-first linear driving device, 3022-second linear driving device, 3023-third linear driving device, 3024-lifting device connection hinge a, 3025-lifting device connection hinge b, 3026-lifting device connection Hinge c, 3027-lifting device connecting hinge d, 3028-lifting device connecting hinge e, 2011-moving device connecting hinge a, 2012-moving linear drive device, 2013-moving device connecting hinge b, 1011-bottom lifting line Driving device, 1012-lifting bottom slider, 1013-bottom lifting roller, 2001-rail connecting hinge a, 2002-bottom lifting guide rail, 2003-rail linear drive device, 2004-rail connecting hinge b, 3053-temporary driving device connecting hinge a, 3054-increasing gear set, 3055-gear slider seat, 3056-temporary linear drive device, 3057-fixed rack, 3058-fixed guide rail, 3059-movable rack, 3060-temporary drive device connecting hinge b; 400 ,Hydraulic support

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings. For convenience of description, the left side of Fig. 6 is defined as the front, and the right side is defined as the rear.

As shown in Figures 1 and 2, a two-degree-of-freedom sliding type temporary support device includes a first support device 100, a frame moving drive device 201 and a second support device 300, and the first support device 100 includes The first support top plate 103, the first support bottom plate 101 and the first lifting mechanism connected between the first support top plate 103 and the first support bottom plate 101, the second support device 300 includes a second support top plate 303 , the second support base plate 301 and the second elevating mechanism connected between the second support top plate 303 and the second support base plate 301, the frame-moving driving device 201 is connected to the first support base plate 101 and the second support base plate Between 301;

The first support device 100 also includes a first temporary support plate 104 and a temporary support plate driving device 305; the second support device 300 also includes a second temporary support plate 304 and a temporary support plate driving device 305; The lifting mechanism includes two groups of first lifting devices located on the inside and two groups of first lifting adjustment devices 102 located on the outside, and the second lifting mechanism includes two groups of second lifting devices located on the inside and two groups of first lifting devices located on the outside. Two lifting adjustment device 302;

The first lifting device and the second lifting device have the same structure, and both include a first linear drive device 3021, a lifting device connecting hinge d3027 and a lifting device connecting hinge a3024, and the upper end of the first linear driving device 3021 is connected to the hinge through the lifting device d3027 is connected to the support top plate, and the lower end of the first linear drive device 3021 is connected to the support bottom plate through the lifting device connecting hinge a3024;

The first lifting adjustment device and the second lifting adjustment device have the same structure, both including the second linear drive device 3022, the third linear drive device 3023, the lifting device connecting hinge b3025, the lifting device connecting hinge c3026 and the lifting device connecting hinge e3028, the lifting device The connecting hinge b3025 and the lifting device connecting hinge c3026 are fixed on the upper end of the first support bottom plate 101 or the second support bottom plate 301, the lifting device connection hinge e3028 is fixed on the first support top plate 103 or the second support top plate 303, and the second The upper ends of the linear driving device 3022 and the third linear driving device 3023 are jointly connected to the elevating device connecting hinge e3028, and the lower ends of the second linear driving device 3022 and the third linear driving device 3023 are respectively hinged on the elevating device connecting hinge b3025 and the elevating device. The device is connected to the hinge c3026;

Both the first support top plate 103 and the second support top plate 303 have a rectangular cavity, and the first temporary support plate 104 is set in the cavity of the first support top plate 103 and is mounted on the temporary support plate driving device 305 The second temporary support plate 304 is set in the cavity of the second support top plate 303 and protrudes or retracts to both sides under the drive of the temporary support plate driving device 305. Enter.

The first temporary support plate 104 can move left or right in the first support top plate 103 under the driving of the temporary support plate driving device 305; The bottom can move left or right in the second support top plate 303; under the action of the moving linear drive device 2012, the first bottom plate 101 and the second bottom plate 301 can produce relative movement in the horizontal direction, so that the sliding type The temporary support device can automatically move along the working direction. This structure enables the device to have a support plate to support the roof at all times when the device is moving and working, and two temporary support areas are formed on the roof of the roadway, thereby During the expansion operation, the roof of the roadway is temporarily supported to protect the safety of personnel and equipment, and avoid the occurrence of injuries and equipment damage caused by falling gangue; the lifting mechanism includes a lifting device that can move the supporting roof upward in the vertical direction , and the lifting adjustment device that can make the support top plate rotate around the lifting device connection hinge e3028, so that the support device can have good adaptability to the situation that there is a large angle between the roadway ground and the roof in the advancing direction. Therefore, under the combined action of the first support device and the second support device, the lifting adjustment device, the support roof, the temporary support plate, and the temporary support plate driving device, the support roof is lifted, and then the top surface of the roadway is adapted. Permanent support, the temporary support plate expands and contracts to carry out the support action of temporary support.

As shown in Figures 1 and 5, the temporary support plate driving device 305 includes a speed increasing gear set 3054, a gear slider seat 3055, a temporary linear driving device 3056, a fixed rack 3057 and a movable rack 3059, and the fixed rack 3057 is fixed. Connected on the fixed guide rail 3058, the fixed guide rail 3058 is fixed on the lower end of the first support top plate 103 or the second support top plate 303, and the movable rack 3059 is fixed on the first temporary support plate 104 or the second temporary support plate 304 At the lower end, one end of the temporary linear drive device 3056 is connected to the first support top plate 103 or the second support top plate 303 through the temporary drive device connection hinge a3053, and the other end is connected to the gear slider seat 3055 through the temporary drive device connection hinge b3060 to speed up The gear set 3054 is installed on the gear slider seat 3055, and the gear slider seat 3055 is clamped on the fixed guide rail 3058 and can slide along the guide rail. The bottoms of the first support top plate 103 and the second support top plate 303 have long holes , the opening position of the long hole, the installation position of the movable rack 3059 and the large gear in the speed-up gear set 3054 are on the same vertical plane, the installation position of the fixed rack 3057 and the small gear in the speed-up gear set 3054 are on the same vertical plane Inside, the large gear in the speed-up gear set 3054 meshes with the movable rack 3059 at the upper end, and the pinion meshes with the fixed rack 3057 at the lower end.

Since the length of the temporary support plate and the support roof is not much different, and the temporary support plate needs to protrude from both ends of the support roof, the limit working stroke of the temporary support plate is longer, and the driving point of the temporary support plate The position also needs to move following the movement of the temporary support plate. The telescopic movement of the temporary linear drive device 3056 drives the speed-increasing gear set 3054 and the gear slider seat 3055 to move along the fixed guide rail 3058. Since the fixed rack 3057 is fixed on the fixed on the guide rail 3058, so the gear on the speed-increasing gear set 3054 converts the linear motion into a rotary motion during the process of meshing with the fixed rack 3057, and the gear passes through the length at the bottom of the first support top plate 103 and the second support top plate 303 The hole engages with the movable rack 3059 at the bottom of the first temporary support plate 104 or the second temporary support plate 304, and then drives the first temporary support plate 104 or the second temporary support plate 304 to extend or retract to both sides .

As shown in Fig. 1, Fig. 3 and Fig. 4, an auxiliary device for moving frame 200 is also installed between the first support device 100 and the second support device 300, and the auxiliary device for moving frame includes 100 and the bottom lifting guide rail 2002 at the bottom of the second support device 300 and the guide rail linear drive device 2003, one end of the guide rail linear drive device 2003 is connected to the middle part of the bottom lifting guide rail 2002 with the guide rail connection hinge a2001, and the other end is connected to the second rail connection hinge b2004 through the guide rail connection hinge b2004. The right sides of the lower ends of the two bottom plates 301 are connected.

After the first supporting device 100 moves, the guide rail linear drive device 2003 pulls the bottom lifting guide rail 2002 to the designated working position, so as to facilitate the next working cycle.

As shown in Figure 4, the four corners of the lower end of the first bottom plate 101 are provided with a bottom lifting mechanism, and the bottom lifting mechanism includes a bottom lifting linear drive device 1011 connected with the first bottom plate 101, and the other end of the bottom lifting linear drive device 1011 is connected to The bottom lifting slider 1012 is connected, the bottom lifting slider 1012 is equipped with a bottom lifting roller 1013, the bottom lifting slider 1012 can slide vertically at the lower end of the first base plate 101, the bottom lifting slider 1012, the bottom lifting roller 1013 can be Slide on the bottom lifting guide rail 2002.

Both sides of the lower ends of the first bottom plate 101 and the second bottom plate 301 are provided with guide grooves, and the bottom lifting guide rail 2002 is clamped in the guide groove, and the bottom of the guide rail is flush with the bottom of the second bottom plate 301 .

During the support operation, the linear drive device 1011 does not work, and the first bottom plate 101 and the bottom lifting guide rail 2002 contact the ground at the same time, which increases the stability of the sliding type temporary support device; when the first support device 100 moves forward , the linear driving device 1011 lifts up, and the bottom lifting slider 1012 moves vertically downward relative to the 101 chute of the first bottom plate, so that the first bottom plate 101 leaves the ground, and the load of the first support device 100 passes through four linear drives in turn. The device 1011 and the bottom-lifting guide rail 2002 are imported into the ground, and at this moment, the bottom-lifting rollers 1013 are rolling on the bottom-lifting guide rail 2002. Since the first support device 100 is also equipped with an excavator for brushing and expanding operations, the frictional force between the moving first support device 100 and the roadway ground is higher than that between the second support device 300 and the roadway ground. It is much larger, so the first support device 100 is lifted as a whole by using the bottom lifting mechanism. When moving, the main resistance of the movement of the first support device 100 is turned into the rolling friction force of the bottom lifting roller 1013 on the bottom lifting guide rail 2002 , greatly reducing the working resistance of the first supporting device 100 when it moves forward, and facilitating the sliding of the device when the roadway ground has a certain slope.

A working method of a two-degree-of-freedom sliding type temporary support device, comprising the following steps:

The first step is shown in Figure 6. The device is transported to the working surface, commissioned and assembled, and other supporting equipment is ready;

In the second step, as shown in Figure 7, the sliding excavator drops the coal under the support of the sliding temporary support device, and the exposed roof after the coal falling adopts the second temporary support plate 304 on the second support device 300 forward support;

In the third step, as shown in Figure 8, the two temporary support plates 304 in the second support device 300 are retracted, and after the first temporary support plate 104 on the first support device 100 stretches forward to protect the roof, the second support The device 300 moves forward and then lowers the frame;

The fourth step is as shown in Figure 9, the second support device 300 reaches the designated station for jacking support, the second temporary support plate 304 on the second support device 300 stretches back to protect the roof, and the first support device The first temporary support plate 104 in 100 is retracted, and the first support device 100 is lowered;

Step 5 As shown in Figure 10, the bottom-lifting linear drive device 1011 is lifted, the first support device 100 is off the ground, and is in a rolling state on the bottom-lifting guide rail 2002, and the second support device 300 is on the frame-moving linear drive device 2012 dragged to move forward to the position, and then the bottom-lifting linear drive device 1011 retracts, and the first support device 100 and the bottom-lifting guide rail 2002 touch the ground at the same time, keeping the first support device 100 in a stable state, and the second support device 300 The second temporary support plate 304 in the back stretches the roof, and the first temporary support plate 104 in the first support device 100 stretches back for protection;

Step 6 As shown in Figure 11, the second temporary support plate 304 in the second support device 300 is retracted, the bottom lifting guide rail 2002 is moved forward under the drag of the guide rail linear drive device 2003, and the first support device 100 is pushed forward. Lift the support, put into the hydraulic support 400 for support at the rear empty roof;

In the seventh step, as shown in FIG. 12 , the first temporary support plate 104 in the first support device 100 is retracted, and the hydraulic support 400 is lifted for support.

The eighth step, repeating the first to seventh steps, can realize the temporary support and automatic sliding action of the two-degree-of-freedom sliding temporary support device.

Claims (6)

1. A two-degree-of-freedom sliding type temporary support device, comprising a first support device (100), a frame moving drive device (201) and a second support device (300), the first support device (100) Including a first support top plate (103), a first support bottom plate (101) and a first lifting mechanism connected between the first support top plate (103) and the first support bottom plate (101), the second support The device (300) comprises a second support top plate (303), a second support bottom plate (301) and a second lifting mechanism connected between the second support top plate (303) and the second support bottom plate (301), The frame-moving driving device (201) is connected between the first support base plate (101) and the second support base plate (301); it is characterized in that, The first support device (100) also includes a first temporary support plate (104) and a temporary support plate driving device (305); the second support device (300) also includes a second temporary support plate (304) and Temporary support plate driving device (305); the first lifting mechanism includes two groups of first lifting devices located on the inside and two groups of first lifting adjustment devices (102) located on the outside, and the second lifting mechanism includes two groups of first lifting devices located on the inside Two groups of second lifting devices and two groups of second lifting adjustment devices (302) located on the outside; The first lifting device and the second lifting device have the same structure, and both include a first linear drive device (3021), a lifting device connection hinge d (3027) and a lifting device connection hinge a (3024), the first linear drive device The upper end of (3021) is connected to the support top plate through the lifting device connecting hinge d (3027), and the lower end of the first linear drive device (3021) is connected to the supporting bottom plate through the lifting device connecting hinge a (3024); The first lifting adjustment device and the second lifting adjustment device have the same structure, and both include a second linear drive device (3022), a third linear drive device (3023), a lifting device connecting hinge b (3025), a lifting device connecting hinge c (3026 ) and the lifting device connecting hinge e (3028), the lifting device connecting hinge b (3025) and the lifting device connecting hinge c (3026) are fixed on the upper end of the first support base plate (101) or the second support base plate (301), and the lifting The device connection hinge e (3028) is fixed on the first supporting top plate (103) or the second supporting top plate (303), and the upper ends of the second linear driving device (3022) and the third linear driving device (3023) are connected on the Hinged on the lifting device connecting hinge e (3028), the lower ends of the second linear drive device (3022) and the third linear driving device (3023) are respectively hinged on the lifting device connecting hinge b (3025) and the lifting device connecting hinge c (3026 )superior; Both the first support top plate (103) and the second support top plate (303) have a rectangular cavity, and the first temporary support plate (104) is set in the cavity of the first support top plate (103) and Driven by the temporary support plate driving device (305), the second temporary support plate (304) is sleeved in the cavity of the second support top plate (303) and Driven by the plate driving device (305), it stretches out or retracts to both sides. 2. According to the described two-degree-of-freedom sliding type temporary support device of claim 1, it is characterized in that the temporary support plate driving device (305) comprises a speed-up gear set (3054), a gear slider seat (3055), a temporary The linear drive device (3056), the fixed rack (3057) and the movable rack (3059), the fixed rack (3057) is fixed on the fixed guide rail (3058), and the fixed guide rail (3058) is fixed on the first roof guard ( 103) or the lower end of the second support top plate (303), the movable rack (3059) is fixed on the lower end of the first temporary support plate (104) or the second temporary support plate (304), and the temporary linear drive device (3056 ) is connected to the first support top plate (103) or the second support top plate (303) through a temporary driving device connecting hinge a (3053), and the other end is connected to the hinge b (3060) and the gear slider seat through a temporary driving device ( 3055) connection, the speed-increasing gear set (3054) is installed on the gear slider seat (3055), the gear slider seat (3055) is clamped on the fixed guide rail (3058) and can slide along the guide rail, and the first support top plate (103) and the bottom of the second support top plate (303) have elongated holes, the opening position of the elongated holes, the installation position of the movable rack (3059) and the large gear in the speed-up gear set (3054) are in the same vertical plane, the mounting position of the fixed rack (3057) is in the same vertical plane as the medium and small gears of the speed-up gear set (3054), and the large gear in the speed-up gear set (3054) meshes with the movable rack (3059) on the upper end, The pinion is engaged with the fixed rack (3057) at the lower end. 3. according to the described two-degree-of-freedom sliding type temporary support device of claim 2, it is characterized in that, between the first support device (100) and the second support device (300), a frame-moving auxiliary device ( 200), the frame moving auxiliary device includes a bottom lifting guide rail (2002) and a guide rail linear drive device (2003) located at the bottom of the first support device (100) and the second support device (300), and the guide rail linear drive device One end of (2003) links to each other with the middle part of lifting bottom guide rail (2002) through guide rail connection hinge a (2001), and the other end links to each other with the lower end right side position of the second bottom plate (301) through guide rail connection hinge b (2004). 4. according to claim 3 said two-degree-of-freedom sliding type temporary support device, it is characterized in that, the four corners of the lower end of the first base plate (101) are provided with bottom-lifting mechanism, and described bottom-lifting mechanism comprises and the first bottom plate ( 101) connected bottom-lifting linear drive device (1011), the other end of the bottom-lifting linear drive device (1011) is connected with the bottom-lifting slider (1012), and the bottom-lifting slider (1012) can be positioned at the lower end of the first bottom plate (101). Sliding along the vertical direction, lifting bottom rollers (1013) are installed on the bottom lifting slide block (1012), and bottom lifting rollers (1013) can slide on bottom lifting guide rails (2002). 5. According to claim 3 or 4, the two-degree-of-freedom sliding type temporary support device is characterized in that guide grooves are provided on both sides of the lower end of the first base plate (101) and the second base plate (301), and the bottom guide rails are lifted (2002) is clamped in the guide groove, and the bottom of the guide rail is flush with the bottom of the second bottom plate (301). 6. A two-degree-of-freedom sliding type temporary support device working method is characterized in that, comprising the following steps: The first step is to transport the device to the working face, debug and assemble, and other supporting equipment is ready; In the second step, the sliding excavator drops coal under the support of the two-degree-of-freedom sliding type temporary support device, and the exposed top plate after the coal falling adopts the second temporary support plate on the second support device (300) ( 304) forward support; In the third step, the two temporary support plates (304) in the second support device (300) are retracted, and after the first temporary support plate (104) on the first support device (100) stretches forward to protect the roof, the second The second supporting device (300) moves forward and then lowers the frame; The fourth step, the second support device (300) reaches the designated station for jacking support, the second temporary support plate (304) on the second support device (300) stretches back to protect the roof, and the first support The first temporary support plate (104) in the device (100) is retracted, and the first support device (100) is lowered; The fifth step, the second support device (300) moves forward, the second temporary support plate (304) in the second support device (300) stretches back to protect the roof, and the first support device (100) in the first support device (100) A temporary support plate (104) stretches back and protects; Step 6. The second temporary support plate (304) in the second support device (300) is retracted, the bottom lifting guide rail (2002) moves forward and resets, and the first support device (100) is lifted and supported. The hydraulic support (400) for supporting is put into the empty roof at the top; In the seventh step, the first temporary support plate (104) in the first support device (100) is retracted, and the hydraulic support (400) is lifted for support. The eighth step, repeating the first to seventh steps, can realize the temporary support and automatic sliding action of the two-degree-of-freedom sliding temporary support device.