Mining telescopic belt conveyor head

Abstract

The mining telescopic belt conveyor head comprises a rack, a conveyor head frame, telescopic mechanisms, carrier rollers, supporting rollers, rolling wheels, supporting legs, a push-pull mechanism and a locking mechanism, the conveyor head frame is connected to the rack in a left-right sliding mode, the telescopic mechanisms are jointly installed between the rack and the conveyor head frame, and the telescopic mechanisms are used for driving the conveyor head frame to move left and right. A plurality of carrier rollers are installed on the right portion of the machine frame, supporting rollers are installed on the upper portion of the machine head frame, idler wheels are installed on the lower portion of the machine head frame, the lowest points of the outer circumferences of the idler wheels are flush with the bottom end of the machine frame, and the front portion and the rear portion of the machine head frame are connected with vertical supporting legs in an up-down sliding mode respectively. The supporting legs can move up and down by controlling the push-pull mechanism, after the position of the headstock is adjusted, the supporting legs move downwards to make contact with the ground, the headstock can be stably supported, displacement and deformation are reduced, and when the supporting legs move upwards, the left-right position of the headstock can be conveniently adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyors, and particularly to a mine-use retractable belt head. Background Art

[0002] In order to meet the transportation needs, some retractable belt conveyors have emerged on the market. Such retractable belt conveyors can adjust the conveying distance to meet different conveying needs. However, when the existing retractable belt conveyors perform telescopic control, the support effect of the telescopic part is poor. When bearing a large amount of load, it is prone to deformation and displacement, thus interfering with the realization of the telescopic effect and even being unable to meet the needs of transporting ores, highlighting the deficiencies of the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide a mine-use retractable belt head to solve the technical problem of the poor support effect of the telescopic part of the retractable belt conveyor in the existing technology.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A mine-use retractable belt head includes a frame, a head frame, a telescopic mechanism, idlers, support rollers, rollers, support legs, a pushing and pulling mechanism, and a locking mechanism. The head frame is slidably connected to the left and right of the frame, and a telescopic mechanism is jointly installed between the head frame and the frame. The telescopic mechanism is used to drive the left and right movement of the head frame. A plurality of idlers are installed on the right part of the frame. Support rollers are installed on the upper part of the head frame. Rollers are installed on the lower part of the head frame. The lowest point of the outer circumference of the rollers is flush with the bottom end of the frame. Vertical support legs are slidably connected up and down to the front and rear parts of the head frame respectively. A pushing and pulling mechanism is jointly installed between the support legs and the head frame. The pushing and pulling mechanism is used to push and pull the support legs up and down. The bottom end of the support legs can be flush with the bottom end of the frame and higher than the bottom end of the frame during the up and down movement. The pushing and pulling mechanism is also installed with a locking mechanism, and the locking mechanism is used to lock the pushing and pulling mechanism to limit the position of the support legs.

[0005] On the basis of the above technical solution, the telescopic mechanism is a two-way hydraulic push rod. The cylinder body of the two-way hydraulic push rod is fixed to the frame, and the push rod of the two-way hydraulic push rod is fixed to the head frame. The telescopic direction of the push rod of the two-way hydraulic push rod is horizontally left and right. The two-way hydraulic push rod is connected to the external hydraulic system through an oil circuit.

[0006] On the basis of the above technical solution, the push-pull mechanism includes a support shaft, a transmission disc, a holding member, a first transmission groove, and a transmission rod. Horizontally arranged support shafts are respectively fixed at the front and rear parts of the machine head frame. The two support shafts are horizontally arranged coaxially in the front and rear directions. The two support shafts are respectively rotatably connected to transmission discs coaxially. The transmission discs are provided with holding members, and an arc-shaped first transmission groove penetrates through the front and rear parts of the bottom. The first transmission groove is eccentrically arranged relative to the support shaft. The two support legs are respectively fixed with transmission rods in the front and rear directions. The first transmission groove is slidably connected to the transmission rods. When the transmission discs rotate along the support shafts, the cooperation between the first transmission groove and the transmission rods can enable the support legs to move up and down along the machine head frame.

[0007] On the basis of the above technical solution, the holding member includes a slider, a tension spring, a control rod, a transmission part, a plug-in part, and a holding part. Sliders are respectively slidably connected in the radial direction on the upper parts of the two transmission discs. Tension springs are respectively fixed between the two sliders and the two transmission discs. The sliders tend to approach the support shaft under the elastic tension of the tension springs. The two sliders are respectively hinged with control rods. The middle and lower parts of the control rods are provided with transmission parts, and the middle and upper parts are provided with plug-in parts. The upper parts of the control rods are provided with holding parts. The cross-sectional area of the plug-in part is larger than the cross-sectional area of the upper part of the transmission part. The cross-sectional area of the holding part is larger than the cross-sectional area of the plug-in part. The virtual hinge axis of the control rod is arranged in the left-right direction. The locking mechanism includes a first socket, a second socket, a first jack, a second jack, and a through groove. Two first sockets are fixed on the left part of the machine head frame, and two second sockets are fixed on the upper part. The two first sockets respectively penetrate through the first jacks in the left-right direction. The two second sockets respectively penetrate through the second jacks in the up-down direction. The first jacks and the second jacks respectively penetrate through the through grooves in the front and rear directions. The transmission part can pass through the through groove in the front and rear directions. The plug-in part cannot pass through the through groove in the front and rear directions. The plug-in part can respectively be matched and inserted with the first jack and the second jack.

[0008] On the basis of the above technical scheme, the locking mechanism also includes a No. 2 transmission groove, a transmission plate, a No. 3 socket, a No. 3 jack, a ground plug, and a compression spring. The lower right part of the transmission disk is penetrated by an arc-shaped and coaxial No. 2 transmission groove in the front and back, and the No. 2 transmission groove is connected with the No. 1 transmission groove. The transmission rod can be slidably connected with the No. 2 transmission groove through the No. 1 transmission groove. An arc-shaped transmission plate is fixed to the outer circumferential wall of the transmission disk. The transmission plate is radially corresponding to the No. 2 transmission groove, and the part close to the No. 1 transmission groove is small and the part close to the right part of the No. 2 transmission groove is large. The front and rear parts of the head frame are each fixed with a No. 3 socket, and the No. 3 socket is located on the right side of the transmission disk and is divided into There are three No. 3 sockets respectively passing through on the left and right sides, and the two No. 3 sockets are respectively passed through with through grooves front and back, and the plug-in part can also be plugged into the No. 3 sockets, and the support legs are respectively passed through and slidably connected with ground plugs up and down, and a compression spring is fixed between the ground plug and the support leg. The ground plug always has a tendency to move upward under the elastic repulsive force of the compression spring and fits and rubs with the outer circumferential wall of the transmission disk or the outer arc-shaped wall of the transmission plate. When the ground plug fits and rubs with the maximum part of the arc-shaped wall of the transmission plate, the ground plug passes through the support leg and protrudes from the bottom end, and the bottom end of the support leg is flush with the bottom end of the frame and the ground plug does not protrude from the bottom end of the support leg when the outer circumference of the transmission disk fits and rubs with the ground plug.

[0009] Compared with the prior art, the present invention has the following advantages: the present invention can move the supporting legs up and down by controlling the push-pull mechanism. When the position of the machine head frame is adjusted, the supporting legs are moved down and in contact with the ground, thereby providing stable support for the machine head frame and reducing displacement and deformation. When the supporting legs are moved up, the left and right positions of the machine head frame can be conveniently adjusted.

[0010] When the joystick is in a horizontal position to the right, the ground plug contacts the outer arc-shaped wall of the transmission plate, and the ground plug passes through the supporting leg and is inserted into the ground, thereby improving the support and limiting effect on the head frame. By pulling the joystick through the through slot of the No. 3 socket and then letting go, the plug-in part can be connected with the No. 3 socket, thereby limiting the position of the joystick relative to the ground plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the axial side structure of the present invention.

[0012] Figure 2 It is a front view schematic diagram of the transmission plate and the support shaft of the present invention when they are matched.

[0013] Figure 3 It is a schematic diagram of the cooperation between the transmission disc and the ground plug of the present invention.

[0014] Figure 4 It is a schematic diagram of the structures of a No. 1 socket, a No. 2 socket and a No. 3 socket of the present invention.

[0015] In the figure: 1, frame; 2, headstock; 4, idler roller; 5, supporting roller; 6, roller; 7, supporting leg; 10, double-acting hydraulic push rod; 11, supporting shaft; 12, driving disc; 14, first driving groove; 15, driving rod; 16, slider; 17, tension spring; 18, control lever; 19, driving part; 20, plug-in part; 21, holding part; 22, first socket; 23, second socket; 24, first jack; 25, second jack; 26, through groove; 27, second driving groove; 28, driving plate; 29, third socket; 30, third jack; 31, ground plug; 32, compression spring. Detailed implementation mode

[0016] The present invention will be further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] As Figures 1 - 4 shown, a retractable belt head for mining includes a frame 1, a headstock 2, a telescopic mechanism, idler rollers 4, supporting rollers 5, rollers 6, supporting legs 7, a pushing and pulling mechanism, and a locking mechanism. The headstock 2 is slidably connected to the left and right of the frame 1, and a telescopic mechanism is jointly installed between the headstock 2 and the frame 1. The telescopic mechanism is used to drive the left and right movement of the headstock 2. A plurality of idler rollers 4 are installed on the right part of the frame 1, supporting rollers 5 are installed on the upper part of the headstock 2, rollers 6 are installed on the lower part of the headstock 2, and the lowest point of the outer circumference of the roller 6 is flush with the bottom end of the frame 1. Vertically arranged supporting legs 7 are slidably connected up and down on the front and rear parts of the headstock 2 respectively. A pushing and pulling mechanism is jointly installed between the supporting legs 7 and the headstock 2. The pushing and pulling mechanism is used to push and pull the supporting legs 7 to move up and down. During the up and down movement of the supporting legs 7, the bottom end thereof can be flush with the bottom end of the frame 1 and higher than the bottom end of the frame 1. The pushing and pulling mechanism is also provided with a locking mechanism, and the locking mechanism is used to lock the pushing and pulling mechanism so as to limit the position of the supporting legs 7.

[0018] During use, place the present invention on the ground. By controlling the telescopic mechanism to expand and contract, the headstock 2 can be moved left and right relative to the frame 1, so as to adjust the length of the belt conveyor. During this period, the roller 6 can be used to provide good support for the headstock 2 during adjustment. By controlling the pushing and pulling mechanism, the supporting legs 7 can be moved up and down. When the position of the headstock 2 is adjusted, the supporting legs 7 are moved down to contact the ground, so as to stably support the headstock 2, reduce displacement and deformation. When the supporting legs 7 are moved up, it is convenient to adjust the left and right position of the headstock 2.

[0019] The telescopic mechanism is a double-acting hydraulic push rod 10. The cylinder body of the double-acting hydraulic push rod 10 is fixed to the frame 1, the push rod of the double-acting hydraulic push rod 10 is fixed to the headstock 2, the telescopic direction of the push rod of the double-acting hydraulic push rod 10 is horizontally set left and right, and the double-acting hydraulic push rod 10 is connected to an external hydraulic system through an oil circuit.

[0020] By controlling the telescopic movement of the bidirectional hydraulic push rod 10, the headstock 2 can be moved left and right.

[0021] The pushing and pulling mechanism includes a support shaft 11, a transmission disc 12, a holding member, a first transmission groove 14, and a transmission rod 15. Horizontal support shafts 11 are respectively fixed at the front and rear parts of the headstock 2. The two support shafts 11 are horizontally arranged coaxially in the front and rear. The two support shafts 11 are respectively rotatably connected to the transmission discs 12 coaxially. The transmission discs 12 are provided with holding members, and an arc-shaped first transmission groove 14 runs through the front and rear of the bottom. The first transmission groove 14 is eccentrically arranged relative to the support shaft 11. The two support legs 7 are respectively fixed with transmission rods 15 along the front and rear directions. The first transmission groove 14 is slidably connected to the transmission rods 15. When the transmission disc 12 rotates along the support shaft 11, the cooperation between the first transmission groove 14 and the transmission rods 15 can make the support legs 7 move up and down along the headstock 2.

[0022] By manually holding the holding member to rotate the transmission disc 12, the cooperation between the first transmission groove 14 and the transmission rods 15 can be used to make the support legs 7 move up and down.

[0023] The holding member includes a slider 16, a tension spring 17, a control lever 18, a transmission part 19, a plug-in part 20, and a holding part 21. The upper parts of the two transmission discs 12 are respectively slidably connected to the sliders 16 in the radial direction. The two sliders 16 and the two transmission discs 12 are respectively fixed with a tension spring 17 together. The sliders 16 tend to approach the support shaft 11 under the elastic tension of the tension spring 17. The two sliders 16 are respectively hinged with a control lever 18. The middle and lower parts of the control lever 18 are provided with a transmission part 19, and the middle and upper parts are provided with a plug-in part 20. The upper part of the control lever 18 is provided with a holding part 21. The cross-sectional area of the plug-in part 20 is larger than the cross-sectional area of the upper part of the transmission part 19. The cross-sectional area of the holding part 21 is larger than the cross-sectional area of the plug-in part 20. The virtual hinge axis of the control lever 18 is arranged in the left and right direction. The locking mechanism includes a first socket 22, a second socket 23, a first jack 24, a second jack 25, and a through groove 26. Two first sockets 22 are fixed on the left part of the headstock 2, and two second sockets 23 are fixed on the upper part. The two first sockets 22 respectively run through the first jacks 24 in the left and right directions. The two second sockets 23 respectively run through the second jacks 25 in the up and down directions. The first jack 24 and the second jack 25 respectively run through the through groove 26 in the front and rear directions. The transmission part 19 can pass through the through groove 26 in the front and rear directions. The plug-in part 20 cannot pass through the through groove 26 in the front and rear directions. The plug-in part 20 can be respectively matched and inserted with the first jack 24 and the second jack 25.

[0024] Further, when the joystick 18 is moved to the horizontal position to the left, the support leg 7 is lifted upward and separated from the ground. At this time, the nose frame 2 can be conveniently moved. By pulling the joystick 18 and enabling the transmission part 19 to pass through the through groove 26 of the first socket 22, and then releasing the hand, the plugging part 20 can be plugged into the first jack 24, thereby limiting the position of the joystick 18 relative to the support leg 7. When the joystick 18 is moved to the vertical position upward, the support leg 7 descends and contacts the ground, thereby realizing stable support. By pulling the joystick 18 through the through groove 26 of the second socket 23, and then releasing the hand, the plugging part 20 can be plugged into the second jack 25, thereby limiting the position of the joystick 18 relative to the support leg 7.

[0025] The locking mechanism further includes a second transmission groove 27, a transmission plate 28, a third socket 29, a third jack 30, a ground plug 31, and a compression spring 32. An arc-shaped and coaxial second transmission groove 27 penetrates through the front and rear of the lower right part of the transmission disk 12. The second transmission groove 27 is communicated with the first transmission groove 14. The transmission rod 15 can be slidably connected to the second transmission groove 27 through the first transmission groove 14. An arc-shaped transmission plate 28 is fixed on the outer circumferential wall of the transmission disk 12. The transmission plate 28 is radially corresponding to the second transmission groove 27, and the part close to the first transmission groove 14 is small while the part close to the right part of the second transmission groove 27 is large. A third socket 29 is fixed to each of the front and rear parts of the nose frame 2. The third socket 29 is located on the right side of the transmission disk 12 and is respectively penetrated through by a third jack 30 in the left-right direction. Each of the two third jacks 30 is penetrated through by a through groove 26. The plugging part 20 can also be plugged into the third jack 30. The support legs 7 are respectively penetrated through and slidably connected with ground plugs 31. A compression spring 32 is jointly fixed between the ground plugs 31 and the support legs 7. The ground plugs 31 always have a tendency to move upward under the elastic repulsive force of the compression spring 32 and are in frictional contact with the outer circumferential wall of the transmission disk 12 or the outer arc-shaped wall of the transmission plate 28. When the ground plugs 31 are in frictional contact with the largest part of the arc-shaped wall of the transmission plate 28, the ground plugs 31 penetrate through the support legs 7 and protrude from the bottom end. The bottom end of the support leg 7 is flush with the bottom end of the frame 1, and when the outer circumference of the transmission disk 12 is in frictional contact with the ground plugs 31, the ground plugs 31 do not protrude from the bottom end of the support legs 7.

[0026] Further, when the joystick 18 is in the horizontal position to the left or the vertical position upward, the ground plugs 31 are in contact with the outer circumferential wall of the transmission disk 12, and then the ground plugs 31 are higher than the ground. When the joystick 18 is in the horizontal position to the right, the ground plugs 31 are in contact with the outer arc-shaped wall of the transmission plate 28, and then the ground plugs 31 penetrate through the support legs 7 and are inserted into the ground, thereby improving the support and limiting effect on the nose frame 2. By pulling the joystick 18 through the through groove 26 of the third socket 29, and then releasing the hand, the plugging part 20 can be plugged into the third jack 30, thereby limiting the position of the joystick 18 relative to the ground plugs 31.

[0027] The above is a preferred embodiment of the present invention. For those of ordinary skill in the art, based on the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions, and variations made to the implementation manners still fall within the protection scope of the present invention.

Claims

1. A retractable belt head for mining, comprising a frame (1), a head frame (2), a telescopic mechanism, idlers (4), support rollers (5), rollers (6), support legs (7), a pushing and pulling mechanism, and a locking mechanism. The head frame (2) is slidably connected to the left and right of the frame (1), and a telescopic mechanism is commonly installed between the frame (1) and the head frame (2). The telescopic mechanism is used to drive the left and right movement of the head frame (2). A plurality of idlers (4) are installed on the right part of the frame (1). Support rollers (5) are installed on the upper part of the head frame (2). Rollers (6) are installed on the lower part of the head frame (2). The lowest point of the outer circumference of the roller (6) is flush with the bottom end of the frame (1). It is characterized in that: On the front and rear parts of the machine head frame (2), there are vertically arranged support legs (7) which are slidably connected up and down. A push-pull mechanism is commonly installed between the support legs (7) and the machine head frame (2). The push-pull mechanism is used to push and pull the support legs (7) to move up and down. During the up and down movement of the support legs (7), the bottom ends thereof can be flush with the bottom end of the frame (1) and higher than the bottom end of the frame (1). The push-pull mechanism is also equipped with a locking mechanism, and the locking mechanism is used to lock the push-pull mechanism so as to limit the position of the support legs (7).

2. The retractable belt head for mining according to claim 1, characterized in that: The telescopic mechanism is a double-acting hydraulic push rod (10). The cylinder body of the double-acting hydraulic push rod (10) is fixed to the frame (1), and the push rod of the double-acting hydraulic push rod (10) is fixed to the machine head frame (2). The telescopic direction of the push rod of the double-acting hydraulic push rod (10) is horizontally arranged left and right. The double-acting hydraulic push rod (10) is connected to an external hydraulic system through an oil circuit.

3. The retractable belt head for mine use according to claim 2, wherein: The push-pull mechanism includes a support shaft (11), a transmission disc (12), a holding member, a first transmission groove (14), and a transmission rod (15). Horizontal support shafts (11) are fixed to the front and rear parts of the machine head frame (2). The two support shafts (11) are horizontally arranged coaxially in the front and rear directions. The two support shafts (11) are respectively rotatably connected to the transmission discs (12) coaxially. The transmission discs (12) are provided with holding members and are vertically penetrated by an arc-shaped first transmission groove (14) at the bottom. The first transmission groove (14) is eccentrically arranged with respect to the support shaft (11). The two support legs (7) are respectively fixed with transmission rods (15) along the front and rear directions. The first transmission groove (14) is slidably connected to the transmission rods (15). When the transmission discs (12) rotate along the support shafts (11), the cooperation between the first transmission groove (14) and the transmission rods (15) can make the support legs (7) move up and down along the machine head frame (2).

4. The retractable belt head for mine use according to claim 3, characterized in that: The holding member includes a slider (16), a tension spring (17), a control lever (18), a transmission part (19), a plug-in part (20), and a holding part (21). Sliders (16) are respectively and radially slidably connected to the upper parts of the two transmission discs (12). Tension springs (17) are commonly fixed between the two sliders (16) and the two transmission discs (12). Under the elastic tension of the tension springs (17), the sliders (16) tend to approach the support shaft (11). The two sliders (16) are respectively hinged with control levers (18). A transmission part (19) is provided in the middle and lower part of the control lever (18), and a plug-in part (20) is provided in the middle and upper part. A holding part (21) is provided at the upper part of the control lever (18). The cross-sectional area of the plug-in part (20) is larger than the cross-sectional area of the upper part of the transmission part (19). The cross-sectional area of the holding part (21) is larger than the cross-sectional area of the plug-in part (20). The virtual hinge axis of the control lever (18) is arranged in the left-right direction. The locking mechanism includes a first socket (22), a second socket (23), a first jack (24), a second jack (25), and a through groove (26). Two first sockets (22) are fixed to the left part of the machine head frame (2), and two second sockets (23) are fixed to the upper part. The two first sockets (22) are respectively penetrated through by first jacks (24) in the left-right direction. The two second sockets (23) are respectively penetrated through by second jacks (25) in the up-down direction. The first jack (24) and the second jack (25) are respectively penetrated through by through grooves (26) in the front-back direction. The transmission part (19) can pass through the through groove (26) in the front-back direction, while the plug-in part (20) cannot pass through the through groove (26) in the front-back direction. The plug-in part (20) can be respectively plugged and matched with the first jack (24) and the second jack (25).

5. A retractable belt head for mining use according to claim 4, wherein: The locking mechanism further includes a second transmission groove (27), a transmission plate (28), a third socket (29), a third jack (30), a ground plug (31), and a compression spring (32). An arc-shaped and coaxial second transmission groove (27) runs through the front and rear of the lower right part of the transmission disk (12). The second transmission groove (27) communicates with the first transmission groove (14). The transmission rod (15) can be slidably connected to the second transmission groove (27) through the first transmission groove (14). An arc-shaped transmission plate (28) is fixed to the outer circumferential wall of the transmission disk (12). The transmission plate (28) is radially corresponding to the second transmission groove (27), and the part close to the first transmission groove (14) is small while the part close to the right part of the second transmission groove (27) is large. Third sockets (29) are respectively fixed to the front and rear parts of the machine head frame (2). The third sockets (29) are located on the right side of the transmission disk (12) and respectively have third jacks (30) running through them from left to right. Through grooves (26) run through the two third jacks (30) respectively. The plug-in part (20) can also be plugged into the third jacks (30). Ground plugs (31) are respectively slidably connected through the upper and lower parts of the support legs (7). A compression spring (32) is fixed between the ground plugs (31) and the support legs (7). Under the elastic repulsive force of the compression spring (32), the ground plugs (31) always tend to move upward and fit and rub against the outer circumferential wall of the transmission disk (12) or the outer arc-shaped wall of the transmission plate (28). When the ground plugs (31) fit and rub against the largest part of the arc-shaped wall of the transmission plate (28), the ground plugs (31) penetrate through the support legs (7) and protrude from the bottom end. The bottom end of the support legs (7) is flush with the bottom end of the frame (1), and when the outer circumference of the transmission disk (12) fits and rubs against the ground plugs (31), the ground plugs (31) do not protrude from the bottom end of the support legs (7).

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