An adjustable display device for a coal shearer

Abstract

The present invention provides an adjustable display device for a shearer, belonging to the technical field of coal mine equipment. The adjustable display device for a shearer includes a plurality of display units arranged side by side on the electric control box of the shearer and a displacement unit for moving the position of any display unit. The display unit includes a display, a bracket for mounting the display, a suspension structure fixedly arranged on the back of the bracket, a locking structure supported at the bottom of the suspension structure for locking the suspension structure, and an electric telescopic rod fixedly arranged between the bottom of the locking structure and the electric control box for jacking up the display at its top to be above the other displays in the height direction; the displacement unit includes a track arranged on the top of the electric control box parallel to the arrangement direction of the plurality of display units and suspension arms arranged at both ends of the track and displaceable on the track. The present invention has the advantage that when workers operate the electric control box at any position, they can move the display to a suitable position to better observe the working state of the shearer.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining equipment, and particularly to an adjustable display device for a shearer. Background Art

[0002] Currently, the display of the shearer's electric control box is installed on the cover plate. Since the body of the shearer's electric control box is very long and there are many cover plates on one box body, the display can only be installed on one of the cover plates. When the operator needs to observe the display screen at one end, it is very inconvenient, and even difficult to directly observe the picture inside the display screen, resulting in the inability to observe the content of the display in real time and understand the working state of the shearer. In view of this, the present invention provides an adjustable display device for a shearer. Summary of the Invention

[0003] To solve the above technical problems, the present invention proposes an adjustable display device for a shearer.

[0004] The technical solution of the present invention is realized as follows:

[0005] An adjustable display device for a shearer includes a plurality of display units arranged side by side on the electric control box of the shearer and a displacement unit for moving the position of any one of the display units. Among them:

[0006] The display unit includes a display, a bracket for installing the display, a suspension structure fixedly arranged on the back of the bracket, a locking structure for locking the suspension structure supported at the bottom of the suspension structure, and an electric telescopic rod fixedly arranged between the bottom of the locking structure and the electric control box for jacking up the display at its top to be above the other displays in the height direction.

[0007] The displacement unit includes a track arranged parallel to the arrangement direction of the plurality of display units on the top of the electric control box and suspension arms arranged at both ends of the track and displaceable on the track. Among them:

[0008] A channel parallel to the track is opened at the top of the suspension structure for the suspension arm to be inserted along the track direction. The locking structure includes a main body part slidably matched with the bottom of the suspension structure and locking plates slidably arranged on both sides of the main body part for locking the suspension structure.

[0009] Locking heads with their tops extending into the channel are arranged on both sides inside the locking structure. The locking heads are in transmission cooperation with the locking plates on their opposite sides through a driving mechanism. The locking heads are arranged such that when pushed by the suspension arm towards the middle of the channel, they drive the locking plates on their opposite sides downward to below the suspension structure, and the suspension arm is arranged such that when it moves to the middle of the channel, it is clamped with the suspension structure.

[0010] Furthermore, the suspension structure includes a front plate body and a rear plate body that are distributed relatively front and rear. Arm guide grooves are provided on both the front plate body and the rear plate body. The two ends of the two arm guide grooves penetrate the front plate body and the rear plate body respectively. Suspension columns that can be displaced in the arm guide grooves are provided on both the front and rear sides of the suspension arm, and a suspension limit groove for the suspension column to insert when the suspension arm rises is provided at the top of the middle part of the arm guide groove.

[0011] Furthermore, the suspension arm includes an elastic telescopic rod body part and an arm guide column fixedly provided at the bottom end of the elastic telescopic rod body part, and the arm guide groove is set to include a downward-inclined part and a horizontal part that are sequentially connected inward from its two inlets, and the suspension limit groove is located at the top of the middle of the horizontal part.

[0012] Furthermore, the lock head includes a head part, a groove opened at the top end of the head part, an inclined surface provided at the top of one side of the head part, and an elastic rod body part that is slidably arranged in the main body part and supported at the bottom of the head part. When the suspension arm pushes the lock head to displace towards the middle of the channel, the arm guide column contacts the inclined surface. The side wall of the groove close to the inclined surface is an arc structure, and the bottom wall of the groove is a plane extending from the bottom end of the arc structure towards the side away from the inclined surface.

[0013] Furthermore, sliding grooves are opened on the inner wall surfaces of the front and rear sides of the main body part, and sliding blocks that are slidably matched with the sliding grooves are fixedly provided on the front and rear sides of the elastic rod body part.

[0014] Furthermore, limit sliding grooves are opened on the front and rear side walls of the main body part. Limit sliding columns that are slidably matched with the limit sliding grooves are provided at both ends of the outer surfaces of the front plate body and the rear plate body. The bottom of the two ends of the limit sliding groove is inclined downward to form a downward-expanded part, and the depth of the downward-expanded part is set to be adapted to the rising distance when the suspension column enters the suspension limit groove from the arm guide groove.

[0015] Furthermore, the two ends between the opposite sides of the front plate body and the rear plate body are connected by a wedge-shaped plate, and the top inclined surface of the wedge-shaped plate is arranged below the downward-inclined part and is parallel to it.

[0016] Furthermore, a traveling trolley is connected to the top end of the elastic telescopic rod body part, and the traveling trolley is arranged on a track.

[0017] Further, the driving mechanism includes two driving plates respectively and fixedly arranged at the bottom of the elastic rod body part, driving racks fixedly arranged on the sides of the driving plates, driving gears rotatably installed in the main body part and meshed with the driving racks, a first driving bevel gear pair coaxially installed below the driving gears, a synchronous belt with one end drivingly connected to the first driving bevel gear pair, a second driving bevel gear pair drivingly connected to the other end of the synchronous belt, a guide sleeve vertically fixed in the main body part, a lead screw rotatably installed in the guide sleeve, and a threaded sleeve slidably arranged in the guide sleeve and sleeved outside the lead screw, wherein the bottom end of the lead screw penetrates through the guide sleeve and is drivingly connected to the second driving bevel gear pair, the locking plate is fixedly arranged at one end of the threaded sleeve extending out of the guide sleeve, and the two driving racks are distributed on both sides in the front-back direction of the main body part.

[0018] Further, the distance between the opposite ends of the two driving plates is adapted to the displacement distance of the lock head moving to the middle of the channel.

[0019] The present invention has the following beneficial effects:

[0020] 1. For the adjustable display device for a shearer of the present invention, each display unit can move in the arrangement direction of the electric control box. Since the overall length of the electric control box of the shearer is relatively long, it is convenient for workers to move the display unit to a suitable position when operating the electric control box at different positions, which is more convenient for observing the working conditions of the shearer.

[0021] 2. For the adjustable display device for a shearer of the present invention, during the displacement and restoration process of each display unit, workers only need to operate the switch to control the electric telescopic rod and the traveling trolley on the suspension arm, and the operation is very convenient and easy to master.

[0022] 3. For the adjustable display device for a shearer of the present invention, the provided suspension structure and locking structure realize the locking and fixing of the display through automatic cooperation, ensuring the stability of the display. At the same time, when the display is displaced, the suspension mechanism and the locking structure are automatically separated, and the locking and separation processes of both do not require manual intervention, with prominent advantages. Description of the Drawings

[0023] Figure 1 is a schematic diagram of the adjustable display device for a shearer of the present invention on the electric control box;

[0024] Figure 2 is the adjustable display device for a shearer of the present invention Figure 1 enlarged view of part A in;

[0025] Figure 3 is the adjustable display device for a shearer of the present invention Figure 1 rear view of;

[0026] Figure 4 is the adjustable display device for a shearer of the present inventionFigure 1 Partial schematic diagram in

[0027] Figure 5 It is the Figure 4 Enlarged view at position B in

[0028] Figure 6 It is the Figure 4 Partial sectional view of

[0029] Figure 7 It is the Figure 6 Partial schematic diagram in

[0030] Figure 8 Schematic diagram of the locking structure of the adjustable display device for a shearer according to the present invention;

[0031] Figure 9 It is the Figure 8 Sectional view of

[0032] Figure 10 Schematic diagram of the structure of the drive mechanism of the adjustable display device for a shearer according to the present invention. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1 to 10 As shown, the adjustable display device for a shearer provided by the embodiment of the present invention mainly includes a display unit and a displacement unit for displacing the display unit. Both the display unit and the displacement unit are provided on the shearer's electric control box. Specifically, both the display unit and the displacement unit are installed on the top cover plate of the electric control box.

[0035] Among them, a plurality of display units are provided, and the plurality of display units are arranged side by side along the arrangement direction of the electric control box on the top of the electric control box, and the displacement unit is arranged to be able to displace any one of the plurality of display units, so that when a worker operates the electric control box at one end, by displacing the corresponding display unit to the position where the worker is located, it is convenient to better observe the working condition of the shearer. This solves the drawback in the prior art that due to the long box body of the electric control box of the shearer, when a worker operates the electric control box at one end, the display screen fixedly installed on the top of one of the electric control boxes is not convenient for the worker to observe the working state of the shearer.

[0036] The display unit includes a display 1, a bracket 2, a suspension structure 3, a locking structure 4 and an electric telescopic rod 5. Among them:

[0037] The display 1 is installed and fixed inside the bracket 2, the suspension structure 3 is fixedly arranged on the back of the bracket 2, the locking structure 4 is supported on the bottom of the suspension structure 3, and the locking structure 4 fixes the display 1 in the initial position by locking the suspension structure 3. The fixed end of the electric telescopic rod 5 is fixedly installed on the electric box, and the extended end thereof is fixedly arranged at the bottom of the locking structure 4. The electric telescopic rod 5 moves the display 1 in the height direction to above other displays 1 by pushing up the display 1 on the top thereof, so that there is enough space for the displacement of the display 1.

[0038] The displacement unit comprises a track 6 and a suspension arm 7, wherein:

[0039] The track 6 is arranged parallel to the arrangement direction of the multiple display units, and the track 6 is fixedly arranged on the top of the electric control box, and its height is greater than the initial height of the display 1. Two suspension arms 7 are provided, and the two suspension arms 7 are respectively located at the two ends of the track 6, and the suspension arms 7 are arranged to be displaceable on the track 6. The two suspension arms 7 are respectively used to displace to the opposite side to realize the displacement process of the display 1 in two different directions along the length of the track 6.

[0040] A channel 8 is provided on the top of the suspension structure 3 and is parallel to the track 6 and is used for the suspension arm 7 to be inserted along the track 6. Specifically, the channel 8 passes through the suspension structure 3 in the width direction, and the top and bottom ends of the channel 8 both pass through the suspension structure 3.

[0041] The locking structure 4 includes a main body 4.1 that is slidably matched with the bottom of the suspension part, and locking plates 4.2 that are slidably arranged on both sides of the main body 4.1 and are used to lock the suspension structure 3. Specifically, the locking structure 4 is a channel steel structure as a whole, and the two locking plates 4.2 extend upward from the top of the main body in the initial state, and the suspension structure 3 is located between the two locking plates 4.2. At this time, the main body 4.1 achieves the effect of locking the suspension structure 3 in the height direction by slidingly matching with the suspension structure 3, and the two locking plates 4.2 achieve the effect of locking the suspension structure 3 in the width direction of the main body 4.1, that is, in the length direction of the track 6. In this way, the locking structure 4 can achieve the effect of locking the display 1 in the initial state by locking and fixing the suspension structure 3.

[0042] On both sides inside the locking structure 4, there are lock heads 9 with their tops extending into the channel 8. Specifically, the two lock heads 9 are arranged to cooperate with the suspension arms 7 on the same side in the length direction of the track 6. When one of the suspension arms 7 enters the channel 8 from the entrance on its same side and moves towards the middle part of the channel 8, this suspension arm 7 will push the lock head 9 on its same side in the length direction of the track 6 towards the middle part of the channel 8. Based on the width direction of the main body part 4.1, the lock head 9 and the locking plate 4.2 on its opposite side are in transmission cooperation through the driving mechanism 10. The lock head 9 is arranged such that when it is pushed towards the middle of the channel 8 by the suspension arm 7, it will drive the locking plate 4.2 on the opposite side of this lock head 9 downward to below the suspension structure 3. At this time, this side of the main body part 4.1 is opened, and the suspension structure 3 can leave the main body part 4.1 by sliding off the main body part 4.1.

[0043] The suspension arm 7 is arranged such that when it moves to the middle of the channel 8 inside the channel 8, it engages with the suspension structure 3. At this time, the suspension arm 7 slides the suspension structure 3 out of the main body part 4.1 by continuing to move forward, and during the subsequent displacement process, it moves the suspended display 1 to the designated position.

[0044] Among them, the suspension structure 3 is arranged to include a front plate body 3.1 and a rear plate body 3.2 that are distributed front and rear relative to each other. The channel 8 is formed between the front plate body 3.1 and the rear plate body 3.2 with an interval therebetween. On the inner surfaces of the front plate body 3.1 and the rear plate body 3.2, there are both arm guide grooves 3.3, and both ends of the two arm guide grooves 3.3 penetrate through the front plate body 3.1 and the rear plate body 3.2 respectively. At this time, both ends of the front plate body 3.1 and the rear plate body 3.2 form the entrances of the arm guide grooves 3.3.

[0045] Both the front and rear ends of the suspension arm 7 are provided with suspension columns 7.1 that can be displaced in the arm guide grooves 3.3. Specifically, when the suspension arm 7 enters the channel 8, the suspension columns 7.1 enter the arm guide grooves 3.3 from the entrances of the arm guide grooves 3.3. After the suspension columns 7.1 enter the arm guide grooves 3.3, through their cooperation with the arm guide grooves 3.3, a suspended state of the suspension arm 7 to the suspension structure 3 is presented.

[0046] At the top of the middle part of the arm guide groove 3.3, there is a suspension limit groove 3.4 for the suspension column 7.1 to insert when the suspension arm 7 rises. The main function of the suspension limit groove 3.4 is that when the suspension arm 7 moves to the middle position of the channel 8, at this time, in the width direction, it is located in the middle of the display 1, and the suspension column 7.1 enters the suspension limit groove 3.4 by following the rise of the suspension arm 7, so that the suspension arm 7 and the suspension structure 3 are limited in the length direction of the track 6, improving the suspension stability of the suspension arm 7 to the display 1.

[0047] Furthermore, the suspension arm 7 includes a traveling trolley 7.4, an elastic telescopic rod body 7.2, and an arm guide post 7.3. The traveling trolley 7.4 is arranged on the track 6 and can be displaced on the track 6. The fixed end of the elastic telescopic rod is fixedly installed on the traveling trolley 7.4. The arm guide post 7.3 is installed at the extending end of the elastic telescopic rod, and the elastic telescopic rod is in a vertically arranged state. The arm guide post 7.3 is rotatably installed at the extending end of the elastic telescopic rod.

[0048] The arm guide groove 3.3 is configured such that from its two inlets inward, it includes a downward-inclined portion 3.31 and a horizontal portion 3.32 that are sequentially distributed. The two horizontal portions 3.32 form an integral body, and the suspension limit groove 3.4 is located at the top in the middle of the integral horizontal portion 3.32.

[0049] At this time, when the suspension post 7.1 moves from the inlet of the arm guide groove 3.3 towards the middle of the channel 8, the downward-inclined portion 3.31 causes the extending end of the elastic telescopic rod body 7.2 to extend downward. When the suspension post 7.1 moves within the horizontal portion 3.32 to directly below the suspension limit groove 3.4, the extending end of the elastic telescopic rod body 7.2 automatically retracts, providing a force for the suspension post 7.1 to enter the suspension limit groove 3.4.

[0050] The lock head 9 includes a head portion 9.1, a groove 9.2, an inclined surface portion 9.3, and an elastic rod body 9.4. Among them:

[0051] The groove 9.2 is opened at the top of the head portion 9.1, and the groove 9.2 is configured as an arc-shaped structure whose side wall close to the inclined surface portion 9.3 is adapted to the arm guide post 7.3, and the bottom wall of the groove 9.2 is a plane extending from the bottom end of the arc structure towards the side away from the inclined surface portion 9.3. When the suspension arm 7 pushes the lock head 9, the arm guide post 7.3 is in a state of contacting the head portion 9.1.

[0052] The inclined surface portion 9.3 is arranged at the top of one side of the head portion 9.1. Specifically, the inclined surface portion 9.3 is arranged at the top of the outer side surface of the head portion 9.1. Specifically, when the suspension arm 7 pushes the lock head 9 to act, the arm guide post 7.3 contacts the inclined surface portion 9.3.

[0053] Before the arm guide post 7.3 contacts the inclined surface portion 9.3, the suspension post 7.1 is displaced in the downward-inclined portion 3.31. During this process, the arm guide post 7.3 is displaced downward obliquely and then contacts the inclined surface portion 9.3.

[0054] After the lock head 9 moves to the middle position of the channel 8 and during the subsequent process of the suspension post 7.1 moving to directly below the suspension limit groove 3.4, the arm guide post 7.3 presses down the head part 9.1 through the inclined surface part 9.3. While the arm guide post 7.3 enters the groove 9.2, under the elastic action of the elastic telescopic rod body part 7.2 and the elastic rod body part 9.4, the head part 9.1 and the suspension post 7.1 rise synchronously, and the suspension post 7.1 enters the suspension limit groove 3.4.

[0055] Wherein, sliding grooves 4.3 are formed on the inner wall surfaces of the front and rear sides of the main body part 4.1, and sliding blocks 4.4 that are slidably matched with the sliding grooves 4.3 are fixedly arranged on the front and rear side surfaces of the elastic rod body part 9.4. By making such a setting, when the lock head 9 moves to the middle position in the channel 8, the sliding blocks 4.4 move to the middle position in the sliding grooves 4.3 to improve the stability of the lock head 9 during displacement.

[0056] Limit sliding grooves 4.5 are formed on the inner walls of the front and rear sides of the main body part 4.1, limit sliding posts 4.6 that are slidably matched with the limit sliding grooves 4.5 are arranged at both ends of the outer surfaces of the front plate body 3.1 and the rear plate body 3.2, and the bottom of both ends of the limit sliding grooves 4.5 is inclined downward to form an expanding part 4.7 at the lower part, and the depth of the expanding part 4.7 is set to be adapted to the rising distance when the suspension post 7.1 enters the suspension limit groove 3.4 from the arm guide groove 3.3.

[0057] At this time, after the suspension structure 3 slides out from one side of the locking structure 4, the extending process of the elastic telescopic rod body has a descending process that is the same as the rising distance when the suspension post 7.1 enters the suspension limit groove 3.4 from the arm guide groove 3.3. After that, the elastic telescopic rod body is stably maintained in the longest state, which can improve the stability of the display 1 during displacement.

[0058] During the process of the suspension structure 3 sliding back onto the top of the main body part 4.1 again, the front limit sliding post 4.6 re-enters the limit sliding groove 4.5 after passing through the expanding part 4.7. When the limit sliding post 4.6 moves from the expanding part 4.7 to the limit sliding groove 4.5, under the guiding action of the inner bottom wall of the expanding part 4.7, the entire suspension structure 3 also has an upward displacement process, and synchronized with this process is the process of the elastic telescopic rod body contracting.

[0059] Furthermore, by using the cooperation of the above-mentioned limit sliding groove 4.5, limit sliding post 4.6, expanding part 4.7, suspension post 7.1, suspension limit groove 3.4 and elastic telescopic rod body, two reverse processes of the suspension structure 3 leaving the locking structure 4 and the suspension structure 3 moving back onto the locking structure 4 can be realized.

[0060] Wherein, the two ends between the opposite sides of the front plate body 3.1 and the rear plate body 3.2 are connected by a wedge-shaped plate 3.5, and the top inclined surface of the wedge-shaped plate 3.5 is arranged below the lower inclined part 3.31 and parallel to the lower inclined part 3.31. At this time, on the one hand, the wedge-shaped plate 3.5 can fix the front plate body 3.1 and the rear plate body 3.2 to form a suspension structure 3, and on the other hand, the wedge-shaped plate 3.5 will not interfere with the movement of the suspension arm 7 in the channel 8.

[0061] The driving mechanism 10 includes two driving plates 10.1 respectively fixed at the bottom of the elastic rod body part 9.4, a driving rack 10.2 fixed on the side of the driving plate 10.1, a driving gear 10.3 rotatably installed in the main body part 4.1 and meshing with the driving rack 10.2, a first driving bevel gear pair 10.4 coaxially installed below the driving gear 10.3, a synchronous belt 10.5 with one end drivingly connected to the first driving bevel gear pair 10.4, a second driving bevel gear pair 10.6 drivingly connected to the other end of the synchronous belt 10.5, a guide sleeve 10.7 vertically fixed in the main body part 4.1, a lead screw 10.8 rotatably installed in the guide sleeve 10.7, and a threaded sleeve 10.9 slidably arranged in the guide sleeve 10.7 and sleeved on the outside of the lead screw 10.8. Wherein, the bottom end of the lead screw 10.8 penetrates through the guide sleeve 10.7 and is drivingly connected to the second driving bevel gear pair 10.6, and a locking plate 4.2 is fixedly arranged at one end of the threaded sleeve 10.9 extending out of the guide sleeve 10.7, and the two driving racks 10.2 are distributed on both sides in the front-back direction of the main body part 4.1.

[0062] During the process of the lock head 9 being pushed by the suspension arm 7 to translate in the channel 8, the lock head 9 drives the driving plate 10.1 to displace synchronously. At this time, the driving plate 10.1 mobilizes the driving rack 10.2 to displace, and the driving rack 10.2 makes the driving gear 10.3 rotate. The driving gear 10.3 drives the first driving bevel gear pair 10.4 to rotate. At this time, the first driving bevel gear pair 10.4 makes the second driving bevel gear pair 10.6 rotate through the synchronous belt 10.5. The second driving bevel gear pair 10.6 drives the lead screw 10.8 to rotate. At this time, the lead screw 10.8 makes the threaded sleeve 10.9 displace downward in the guide sleeve 10.7. Furthermore, the threaded sleeve 10.9 drives the locking plate 4.2 on the opposite side of the displaced lock head 9 to displace downward, providing space for the suspension structure 3 to slide out from the main body part 4.1.

[0063] Furthermore, the distance between the opposite ends of the two driving plates 10.1 is set to be adapted to the displacement distance when the lock head 9 moves to the middle of the channel 8. At this time, when the lock head 9 moves to the middle of the channel 8, the opposite ends of the two driving plates 10.1 come into contact, improving the stability of the lock head 9 and further improving the stability of the display 1 when it is suspended.

[0064] The operating principle of the adjustable display device of the shearer provided by the embodiments of the present invention will be described in detail below:

[0065] 1. When it is necessary to move a certain display 1 to a specified position, first start the electric telescopic rod 5 at the bottom of the object display 1, so that the electric telescopic rod 5 jacks up the object display 1 to a state where it is above other displays 1 in the height direction.

[0066] 2. When it is necessary to displace the display 1 to the left, start the suspension arm 7 at the right end of the track 6. When it is necessary to displace the display 1 to the right, start the suspension arm 7 at the left end of the track 6.

[0067] 3. Start the suspension arm 7, and the suspension arm 7 is displaced on the track 6 from one side to the position where the display 1 is located under the drive of its traveling trolley 7.4.

[0068] 4. The arm guide column 7.3 of the suspension arm 7 enters the channel 8 from one side. At the same time, the suspension column 7.1 enters the lower inclined part 3.31 of the arm guide groove 3.3 and continues to move towards the middle of the channel 8. During this process, the elastic telescopic rod body part 7.2 of the suspension arm 7 is stretched.

[0069] 5. When the suspension column 7.1 moves to the junction position of the lower inclined part 3.31 and the horizontal part 3.32, the arm guide column 7.3 contacts the inclined surface part 9.3 of the lock head 9. Then, when the suspension column 7.1 displaces in the horizontal part 3.32 towards the suspension limit groove 3.4, the arm guide column 7.3 pushes the lock head 9 to displace towards the middle of the channel 8 through the inclined surface part 9.3. At this time, the driving mechanism 10 acts, so that the locking plate 4.2 on the opposite side of the lock head 9 starts to displace downward.

[0070] 6. When the lock head 9 moves to the middle position of the channel 8, the suspension column 7.1 is still in the horizontal part 3.32 and has not reached below the suspension limit groove 3.4, and the locking plate 4.2 on the opposite side of the lock head 9 has moved below the suspension structure 3 in the height direction; the arm guide column 7.3 moves to the top of the inclined surface part 9.3 and is located on the upper surface of the head part 9.1.

[0071] 7. During the subsequent displacement of the suspension arm 7 towards the middle of the channel 8, the arm guide column 7.3 moves from the top of the head part 9.1 to the groove 9.2. At this time, the suspension column 7.1 just moves to directly below the suspension limit groove 3.4. Then, under the elastic action of the elastic telescopic rod body part 7.2 of the suspension arm 7 and the elastic rod body part 9.4 of the lock head 9, the suspension column 7.1 moves upward into the suspension limit groove 3.4.

[0072] 8. Subsequently, during the continuous movement of the suspension arm 7, through the cooperation of the suspension column 7.1 and the suspension limit groove 3.4, the suspension column 7.1 will push the suspension part to slide forward from the main body part 4.1 and achieve the effect of the displacement display 1. During this process, the arm guide column 7.3 will automatically leave the head part 9.1 from the bottom wall of the groove 9.2 after passing through the groove 9.2 of the head part 9.1 in a reverse manner.

[0073] 9. When it is necessary to displace another display 1, first restore the already displaced display 1 to its original position. When restoring the display 1 to its original position, directly start the suspension arm 7 to displace on the track 6 to the original position. During this process, when the suspension structure 3 moves to one side of the main body part 4.1, the limit slide column 4.6 first displaces in the lower expansion part 4.7 to lift the entire suspension structure 3 and the display 1 until the limit slide column 4.6 moves into the limit slide groove 4.5.

[0074] 10. Subsequently, when the entire suspension structure 3 moves into the main body part 4.1 in the length direction of the track 6, the arm guide column 7.3 moves from the open side of the groove 9.2 of the head part 9.1 into the groove 9.2, and the suspension structure 3 contacts the inner side surface of the non-next locking plate 4.2 and is in a state where the front side is blocked.

[0075] 11. Subsequently, the suspension arm 7 continues to displace on the track 6 towards the initial position. At this time, since the suspension arm 7 undergoes an upward movement process during the process of moving back to the top of the main body part 4.1 again, the elastic telescopic rod body part 7.2 of the suspension arm 7 is again in a condition of being stretched downward. The entire suspension arm 7 displaces relative to the suspension structure 3. During this process, the suspension column 7.1 will displace into the horizontal part 3.32 along the side wall surface of the connection between the suspension limit groove 3.4 and the horizontal part 3.32.

[0076] 12. Subsequently, during the displacement process of the suspension arm 7, the arm guide column 7.3 displaces the lock head 9 towards the initial position in the channel 8 through the side wall of the groove 9.2. After the lock head 9 displaces to the initial position, the arm guide column 7.3 presses down the lock head 9 through the side wall of the groove 9.2 and thereby crosses over the lock head 9 and leaves the channel 8 from the entrance of the channel 8 where it enters.

[0077] The above is the entire movement process of displacing a certain display 1 and returning the display 1 of the adjustable display device of the shearer in the embodiment of the present invention. During the entire above movement process, the worker only needs to control the operation of the electric telescopic rod 5 and the traveling trolley 7.4 on the suspension arm 7 through a switch. The movement process of the suspension structure 3 and the locking structure 4 is completed by the suspension structure 3 and the locking structure 4 itself without manual intervention.

[0078] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable display device for a coal shearer, characterized in that It includes a plurality of display units arranged side by side on the electric control box of the coal mining machine and a displacement unit for moving the position of any display unit. Among them: The display unit includes a display (1), a bracket (2) for mounting the display (1), a suspension structure (3) fixedly arranged on the back of the bracket (2), a locking structure (4) supported at the bottom of the suspension structure (3) for locking the suspension structure (3), and an electric telescopic rod (5) fixedly arranged between the bottom of the locking structure (4) and the electric control box for pushing the display (1) at its top upward to be above the other displays (1) in the height direction; The displacement unit includes a track (6) arranged on the top of the electric control box parallel to the arrangement direction of the plurality of display units and suspension arms (7) arranged at both ends of the track (6) and displaceable on the track (6). Among them: A channel (8) parallel to the track (6) for the suspension arm (7) to insert along the direction of the track (6) is opened at the top of the suspension structure (3). The locking structure (4) includes a main body part (4.1) slidably matched with the bottom of the suspension structure (3) and locking plates (4.2) slidably arranged on both sides of the main body part (4.1) for locking the suspension structure (3); Locking heads (9) with their tops extending into the channel (8) are arranged on both sides inside the locking structure (4). The locking heads (9) are in transmission cooperation with the locking plates (4.2) on their opposite sides through a driving mechanism (10). The locking heads (9) are arranged to drive the locking plates (4.2) on their opposite sides downward to below the suspension structure (3) when being pushed by the suspension arm (7) towards the middle of the channel (8), and the suspension arm (7) is arranged to be clamped with the suspension structure (3) when moving to the middle of the channel (8); The suspension structure (3) includes a front plate body (3.1) and a rear plate body (3.2) distributed front and rear relatively. Arm guide grooves (3.3) are arranged on both the front plate body (3.1) and the rear plate body (3.2). The two ends of the two arm guide grooves (3.3) penetrate through the front plate body (3.1) and the rear plate body (3.2) respectively. Suspension columns (7.1) displaceable in the arm guide grooves (3.3) are arranged on both the front and rear sides of the suspension arm (7), and a suspension limit groove (3.4) for the suspension column (7.1) to insert when the suspension arm (7) rises is arranged at the top of the middle part of the arm guide groove (3.3); The suspension arm (7) includes an elastic telescopic rod body part (7.2) and an arm guide column (7.3) fixedly arranged at the bottom end of the elastic telescopic rod body part (7.2). The arm guide groove (3.3) is arranged to have a downward inclined part (3.31) and a horizontal part (3.32) communicating with each other in sequence from its two inlets inward, and the suspension limit groove (3.4) is located at the top of the middle part of the horizontal part (3.32).

2. The adjustable display device for a coal shearer according to claim 1, characterized in that, The lock head (9) includes a head portion (9.1), a groove (9.2) formed at the top end of the head portion (9.1), an inclined surface portion (9.3) provided at the top of one side of the head portion (9.1), and an elastic rod portion (9.4) slidably disposed within the main body portion (4.1) and supported at the bottom of the head portion (9.1). When the suspension arm (7) pushes the lock head (9) to displace towards the middle of the channel (8), the arm guide post (7.3) contacts the inclined surface portion (9.3). One side wall of the groove (9.2) close to the inclined surface portion (9.3) is an arc structure, and the bottom wall of the groove (9.2) is a plane extending from the bottom end of the arc structure towards the side away from the inclined surface portion (9.3).

3. The adjustable display device for a coal shearer according to claim 2, characterized in that, Chute grooves (4.3) are formed on the inner wall surfaces of the front and rear sides of the main body portion (4.1). Sliders (4.4) slidably engaged with the chute grooves (4.3) are fixedly provided on the front and rear side surfaces of the elastic rod portion (9.4).

4. An adjustable display device for a coal shearer according to claim 1, characterized in that, Limit chute grooves (4.5) are formed on the front and rear side walls of the main body portion (4.1). Limit slide posts (4.6) slidably engaged with the limit chute grooves (4.5) are provided at both ends of the outer surfaces of the front plate body (3.1) and the rear plate body (3.2). The bottom of the two ends of the limit chute grooves (4.5) inclines downward to form a lower expansion portion (4.7), and the depth of the lower expansion portion (4.7) is set to be adapted to the rising distance when the suspension post (7.1) enters the suspension limit groove (3.4) from the arm guide groove (3.3).

5. The adjustable display device for a coal shearer according to claim 1, characterized in that, The two ends between the opposite sides of the front plate body (3.1) and the rear plate body (3.2) are connected by a wedge-shaped plate (3.5), and the top inclined surface of the wedge-shaped plate (3.5) is arranged below and parallel to the lower inclined portion (3.31).

6. The adjustable display device for a coal shearer according to claim 1, characterized in that, The top end of the elastic telescopic rod portion (7.2) is connected with a traveling trolley (7.4), and the traveling trolley (7.4) is arranged on the track (6).

7. The adjustable display device for a coal shearer according to claim 2, characterized in that, The driving mechanism (10) includes two driving plates (10.1) respectively and fixedly arranged at the bottom of the elastic rod body part (9.4), a driving rack (10.2) fixedly arranged on the side of the driving plate (10.1), a driving gear (10.3) rotatably installed in the main body part (4.1) and meshed with the driving rack (10.2), a first driving bevel gear pair (10.4) coaxially installed below the driving gear (10.3), a synchronous belt (10.5) with one end drivingly connected to the first driving bevel gear pair (10.4), a second driving bevel gear pair (10.6) drivingly connected to the other end of the synchronous belt (10.5), a guide sleeve (10.7) vertically fixed in the main body part (4.1), a lead screw (10.8) rotatably installed in the guide sleeve (10.7), and a threaded sleeve (10.9) slidably arranged in the guide sleeve (10.7) and sleeved outside the lead screw (10.8). Among them, the bottom end of the lead screw (10.8) penetrates through the guide sleeve (10.7) and is drivingly connected to the second driving bevel gear pair (10.6). The locking plate (4.2) is fixedly arranged at one end of the threaded sleeve (10.9) extending out of the guide sleeve (10.7), and the two driving racks (10.2) are distributed on both sides in the front-back direction of the main body part (4.1).

8. An adjustable display device for a coal shearer according to claim 7, characterized in that, The distance between the opposite ends of the two driving plates (10.1) is adapted to the displacement distance of the lock head (9) moving to the middle of the channel (8).

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