A strong broken card scraper conveyor drive device and scraper conveyor

Abstract

The present application belongs to the technical field of mining equipment conveying, and particularly relates to a strong broken card scraper conveyor driving device and a scraper conveyor. The broken card oil cylinder assembly is connected with the support frame of the scraper conveyor driving device. The rotating part on the scraper conveyor driving device which rotates synchronously with the chain wheel is provided with a first limiting part. The end of the broken card oil cylinder assembly close to the rotating part is provided with a second limiting part. When the first limiting part and the second limiting part are engaged by the extension of the broken card oil cylinder assembly, the chain wheel is locked. One end of the broken card oil cylinder assembly is supported by the scraper conveyor as a counterforce, and the other end pushes the scraper conveyor driving device to move in the conveying direction through the first limiting part. The scraper conveyor provided with the strong broken card driving device can effectively improve the hard rock material conveying efficiency of the scraper conveyor and the related production efficiency of hard rock by adjusting the slackness of the scraper chain through the tensioning oil cylinder and breaking the blockage with high probability and high efficiency through the broken card oil cylinder.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mining equipment conveying, and particularly relates to a strong breaking and scraping scraper conveyor driving device and a scraper conveyor. BACKGROUND

[0002] Current mining equipment such as a boom-type tunneling machine generally uses a scraper conveyor to transport materials, and a chain is pulled by a hydraulic motor or a motor. Limited by the economy and arrangement space of the equipment, the rated traction of the traction hydraulic motor (motor) of the scraper conveyor is small, and it generally only meets the needs of regular material transportation. In addition, based on the structure and working requirements of the equipment, the scraper conveyor generally has multiple longitudinal bends, and the scraper conveyor transport chain groove needs to be arranged with chain pressing plates to limit the scraper chain. Therefore, when the scraper conveyor is applied to hard rock transportation, chain jamming occurs at positions such as rock jamming into the scraper chain channel. Currently, the motor (motor) is generally used to break the chain by repeatedly impacting the jamming point, and if the problem cannot be solved, manual removal of the chain groove material is required to remove the jamming in sections, which is extremely time-consuming and labor-intensive. SUMMARY

[0003] The present application is to solve the problem of chain jamming when the scraper conveyor is applied to hard rock transportation, which is difficult to remove and has a greater impact on transportation efficiency and subsequent production activities.

[0004] The present application provides the following technical scheme: a strong breaking and scraping scraper conveyor driving device, comprising a breaking and scraping cylinder assembly, the breaking and scraping cylinder assembly being connected with a support frame of the scraper conveyor driving device, a first limiting part being arranged on a rotating part on the scraper conveyor driving device that rotates synchronously with a sprocket, a second limiting part being arranged at one end of the breaking and scraping cylinder assembly close to the rotating part, the sprocket being locked when the first limiting part and the second limiting part are engaged by the breaking and scraping cylinder assembly extending out, one end of the breaking and scraping cylinder assembly being supported by the scraper conveyor as a counterforce, and the other end of the breaking and scraping cylinder assembly pushing the scraper conveyor driving device to move in the conveying direction through the first limiting part.

[0005] Further, it further comprises a connecting seat assembly, a driving unit, a transmission shaft and a semicircular shaft sleeve; two connecting seat assemblies are installed on both sides of the support frame and fixed to the support frame by bolts; the connecting seat assembly comprises a connecting seat, a bearing set and a driving shaft; the output ends of the driving shafts of the two connecting seat assemblies are each connected with a sprocket; the input end of the driving shaft of at least one connecting seat assembly is connected with the driving unit, and the driving unit is fixed to the connecting seat assembly by bolts; the transmission shaft is connected between the two sprockets; the two semicircular shaft sleeves are a set and are installed in the middle part of the transmission shaft by bolts, and the first limiting part is arranged on the outer middle circumferences of the two semicircular shaft sleeves; the breaking and scraping cylinder assembly is arranged in the middle part of the support frame and aligned with the first limiting part.

[0006] Further, the cylinder barrel of the breaking card oil cylinder assembly is slidably arranged in the cavity of the support frame along the telescopic direction, the end of the cylinder barrel extends out of the cavity and is connected with the second limiting part, the end of the piston rod of the breaking card oil cylinder assembly extends out of the cavity and is connected with the limiting plate, and the limiting plate is stopped outside the cavity to limit the end of the piston rod from entering the cavity.

[0007] Further, the two sides of the cylinder barrel of the breaking card oil cylinder assembly are provided with guide blocks, and the guide blocks are slidably guided in the cavity of the support frame.

[0008] Further, the support frame further comprises a connecting seat assembly, a driving unit and a semicircular shaft sleeve, two connecting seat assemblies are arranged on the two sides of the support frame and are fixed to the support frame by bolts, the connecting seat assembly comprises a connecting seat, a bearing set and a driving shaft, the output ends of the driving shafts of the two connecting seat assemblies are connected with a chain wheel respectively, the two chain wheels are connected, the input end of the driving shaft of at least one connecting seat assembly is connected with the driving unit, the driving unit is fixed to the connecting seat assembly by bolts, and two semicircular shaft sleeves are arranged between the connecting seat assemblies and the chain wheels on the two sides, respectively, and the first limiting parts are arranged on the outer middle circumferences of the two semicircular shaft sleeves in the same group.

[0009] Further, the first limiting part is a ratchet tooth, and the second limiting part is a fixed pawl.

[0010] Further, the first limiting part is an arc-shaped groove circular array structure, and the second limiting part is a circular arc-shaped top block.

[0011] A kind of scraper conveyor, including a kind of strong breaking card scraper conveyor driving device, scraper conveyor head and scraper chain, scraper conveyor driving device is connected with scraper conveyor head;

[0012] The "U" type groove is provided on the scraper conveyor head, the back of the "U" type groove is provided with a partition, and the support frame of the scraper conveyor driving device is installed in the "U" type groove and can slide forward and backward in the groove;The end of the piston rod of the breaking card oil cylinder assembly protrudes from the support frame and is located in front of the partition of the scraper conveyor head;The outer two sides of the support frame are each fixed with one tension oil cylinder, the cylinder barrels of the two tension oil cylinders are fixedly connected with the support frame, and the ends of the piston rods of the two tension oil cylinders abut against the limiting blocks on the scraper conveyor head;The scraper chain is laid in the upper and lower chain grooves of the scraper conveyor, and the scraper chain and the chain wheel are engaged.

[0013] Compared with the prior art, the advantages of the present application are that:

[0014] Compared to current scraper conveyor drive units, this drive unit additionally includes a jam-breaking cylinder assembly, with ratchet teeth on the semi-circular bushing of the drive shaft. When the chain jams, the jam-breaking cylinder assembly extends forward under the guidance of the guide block. The fixed pawl at the front end engages with the ratchet teeth of the semi-circular bushing, locking the bushing in one direction to prevent the sprocket from reversing. As the jam-breaking cylinder assembly continues to extend forward, the fixed pawl pushes the semi-circular bushing forward, thereby driving the drive shaft and sprocket forward, ultimately dragging the scraper chain to achieve the jam-breaking function. A detachable limiting plate is installed at the piston rod end of the jam-breaking cylinder assembly, reducing connections and allowing the jam-breaking cylinder assembly and sprocket shaft assembly to disengage within the drive unit's range.

[0015] The scraper conveyor equipped with a strong anti-jamming drive device can effectively improve the transportation efficiency of hard rock materials by adjusting the slack of the scraper chain through the tensioning cylinder, and finally break the jamming through the anti-jamming cylinder with a high probability and high efficiency, thereby improving the production efficiency of hard rock. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a high-strength scraper conveyor drive device;

[0017] Figure 2 for Figure 1 Sectional view at point AA;

[0018] Figure 3 This is a schematic diagram of the card breaking state of the high-speed card breaking scraper conveyor;

[0019] Figure 4 This is a side view of the head of the scraper conveyor;

[0020] Figure 5 This is a schematic diagram of a semi-circular bushing;

[0021] Figure 6 for Figure 5 Sectional view at point BB;

[0022] Figure 7 for Figure 5 Sectional view at CC;

[0023] Figure 8 This is a schematic diagram of the hydraulic cylinder assembly for breaking the card.

[0024] Figure 9 This is a sectional view of the head of the scraper conveyor.

[0025] In the figure: 1 - support frame; 2 - connecting seat assembly; 2.1 - drive shaft; 3 - drive unit; 4 - sprocket; 5 - transmission shaft; 6 - half-round shaft sleeve; 6.1 - ratchet tooth; 6.2 - inner square; 6.3 - bolt hole; 7 - broken card oil cylinder assembly; 7.1 - fixed pawl; 7.2 - guide block; 7.3 - limiting plate; 8 - scraper conveyor head; 8.1 - partition; 8.2 - limiting block; 8.3 - "U" groove; 8.4 - upper chain groove; 8.5 - lower chain groove; 9 - tensioning oil cylinder; 10 - scraper chain. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Embodiment 1

[0028] As shown in Figure 1 , Figure 3 : a strong broken card scraper conveyor drive device, comprising a broken card oil cylinder assembly 7, the broken card oil cylinder assembly 7 is connected with the support frame 1 of the scraper conveyor drive device, a first limiting part is arranged on the rotating part on the scraper conveyor drive device which rotates synchronously with the sprocket 4, a second limiting part is arranged on the end of the broken card oil cylinder assembly 7 close to the rotating part, the sprocket 4 is locked when the broken card oil cylinder assembly 7 extends to make the first limiting part mesh with the second limiting part, one end of the broken card oil cylinder assembly 7 is supported by the scraper conveyor as a counterforce, and the other end pushes the scraper conveyor drive device to move in the conveying direction through the first limiting part.

[0029] As shown in Figure 2As shown: the strong broken card scraper conveyor driving device driven by the edge double chain is taken as an example, the strong broken card scraper conveyor driving device further comprises a connecting seat assembly 2, a driving unit 3, a transmission shaft 5 and a semicircular shaft sleeve 6; two connecting seat assemblies 2 are installed on both sides of the support frame 1 and are fixed to the support frame 1 through bolts; the connecting seat assembly 2 comprises a connecting seat, a bearing set and a driving shaft 2.1; the output end of the driving shaft 2.1 of each of the two connecting seat assemblies 2 is connected with a chain wheel 4; the input end of the driving shaft 2.1 of at least one connecting seat assembly 2 is connected with the driving unit 3, the driving unit 3 is fixed to the connecting seat assembly 2 through bolts, and the driving unit 3 is a hydraulic motor or a motor reducer set. Specifically, the two ends of the driving shaft 2.1 are input splines and output splines, the output end of the driving unit 3 is connected with the input spline of the driving shaft 2.1 of the connecting seat assembly 2, and the chain wheel 4 is connected with the output spline of the driving shaft 2.1 of the connecting seat assembly 2. The transmission shaft 5 is connected between the two chain wheels 4; the two ends of the transmission shaft 5 are splines, which are respectively connected with the splines of the two chain wheels 4, and the middle of the transmission shaft 5 is arranged with an external spline or a regular polygonal outer side. The two semicircular shaft sleeves 6 are a set and are installed in the middle of the transmission shaft 5 through bolts, the middle of the interior of the two semicircular shaft sleeves 6 is a spline or a regular polygonal inner side matched with the transmission shaft 5, and the middle of the exterior of the two semicircular shaft sleeves 6 is arranged with a first limiting part; the broken card oil cylinder assembly 7 is arranged in the middle of the support frame 1 and is aligned with the first limiting part.

[0030] As shown in Figure 3 : the cylinder barrel of the broken card oil cylinder assembly 7 is assembled in the cavity in the interior of the support frame 1 in a slidable manner along the extension direction of the cylinder barrel, the end of the cylinder barrel extends out of the cavity and is connected with a second limiting part, the end of the piston rod of the broken card oil cylinder assembly 7 extends out of the cavity and is connected with a limiting plate 7.3, the limiting plate 7.3 is stopped on the cavity shell to limit the end of the piston rod to be received in the cavity, and when the broken card oil cylinder assembly 7 is retracted, the limiting plate 7.3 is stopped on the cavity shell to limit the movement of the broken card oil cylinder assembly 7 forward and backward; the connection is reduced, and the broken card oil cylinder assembly 7 and the chain wheel shaft assembly can be separated from contact within the range of the driving device.

[0031] As shown in Figure 8 : the two sides of the cylinder barrel of the broken card oil cylinder assembly 7 are provided with guide blocks 7.2, and the guide blocks 7.2 are slidably matched with the cavity of the support frame 1.

[0032] As shown in Figure 5 , Figure 6 , Figure 7 : the first limiting part is a ratchet tooth 6.1, and the second limiting part is a fixed pawl 7.1.

[0033] In addition, the first limiting part can also be an arc-shaped slot circular array structure, and correspondingly, the second limiting part is a circular arc-shaped top block.

[0034] If the middle double-stranded, single-stranded drive device, can save the transmission shaft 5, strong broken card scraper conveyor drive device also includes connecting seat assembly 2, drive unit 3 and half round shaft sleeve 6, two connecting seat assembly 2 is installed on both sides of the support frame 1, and is fixed to the support frame 1 by bolts; connecting seat assembly 2 includes connecting seat, bearing group and drive shaft 2.1; the output end of the drive shaft 2.1 of the two connecting seat assembly 2 is connected with one chain wheel 4 respectively, and the two chain wheels 4 are connected; the input end of the drive shaft 2.1 of at least one connecting seat assembly 2 is connected with the drive unit 3, and the drive unit 3 is fixed to the connecting seat assembly 2 by bolts; two half round shaft sleeves 6 are a group, and two groups of half round shaft sleeves 6 are respectively installed between the connecting seat assembly 2 and the chain wheel 4 on both sides, and the first limiting part is arranged on the outer middle circumference of the two half round shaft sleeves 6 in the same group; two broken card oil cylinder assemblies 7 are respectively aligned with the first limiting part of the two groups of half round shaft sleeves 6.

[0035] Embodiment 2

[0036] As shown in Figure 3 , Figure 4 , Figure 9 : a scraper conveyor, comprising a strong broken card scraper conveyor drive device of embodiment 1, a scraper conveyor head 8 and a scraper chain 10, the scraper conveyor drive device is connected with the scraper conveyor head 8;

[0037] The scraper conveyor head 8 is provided with a "U" type groove 8.3, a partition plate 8.1 is installed behind the "U" type groove 8.3, and the support frame 1 of the scraper conveyor drive device is installed in the "U" type groove 8.3 and can slide forward and backward in the groove; the end of the piston rod of the broken card oil cylinder assembly 7 protrudes from the support frame 1 and is located in front of the partition plate 8.1 of the scraper conveyor head 8; one tensioning oil cylinder 9 is fixed on the outer side of the support frame 1; the cylinder barrel of the two tensioning oil cylinders 9 is fixedly connected with the support frame 1, and the end of the piston rod of the two tensioning oil cylinders 9 abuts against the limiting block 8.2 on the scraper conveyor head 8; the scraper chain 10 is laid in the upper and lower chain grooves of the scraper conveyor, and the scraper chain 10 is engaged with the chain wheel 4.

[0038] When the scraper conveyor works normally, the oil cylinder of the broken card oil cylinder assembly 7 contracts, the end of the piston rod contracts the limiting plate 7.3 and abuts against the support frame 1, the end of the cylinder barrel is retracted under the guidance of the guide block 7.2, and the front fixed pawl 7.1 is disengaged from the half round shaft sleeve 6. The drive unit 3 can normally drive the chain wheel 4 to reverse, thereby dragging the scraper chain 10 to drive.

[0039] When the chain is blocked, the oil cylinder of the broken card oil cylinder assembly 7 extends, the piston rod end extends and tightly pushes the partition plate 8.1 on the head of the scraper conveyor 8, the cylinder end moves forward under the guidance of the guide block 7.2, the front fixed pawl 7.1 of the cylinder end contacts and acts on the semicircular shaft sleeve 6, the semicircular shaft sleeve 6 cannot be reversed, the resistance torque is transmitted in the semicircular shaft sleeve 6, outside the transmission shaft 5 and the spline, the sprocket 4 cannot be reversed. The cylinder tube of the broken card oil cylinder assembly 7 continues to stretch forward, pushes the sprocket 4 to move forward, and the sprocket 4 pulls the scraper chain 10 of the scraper conveyor to move forward, so as to break the blockage and remove the chain blockage. If the slack degree of the scraper chain 10 of the scraper conveyor is insufficient, the slackening oil cylinder 9 can be operated to shrink a little, then the driving unit 3 is operated to rotate and tighten the scraper chain 10 in the upper chain groove, and finally the broken card oil cylinder assembly 7 is operated to break the blockage.

[0040] The above description of disclosed embodiments enables one skilled in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A scraper conveyor, characterized in that: It includes a high-strength scraper conveyor drive unit, a scraper conveyor head (8) and a scraper chain (10), with the high-strength scraper conveyor drive unit connected to the scraper conveyor head (8); A U-shaped groove (8.3) is provided on the head of the scraper conveyor (8). A partition plate (8.1) is installed behind the U-shaped groove (8.3). The support frame (1) of the strong card breaking scraper conveyor drive device is installed in the U-shaped groove (8.3) and can slide back and forth in the groove. The piston rod end of the card breaking cylinder assembly (7) protrudes out of the support frame (1) and is located in front of the partition plate (8.1) of the head of the scraper conveyor (8). A tensioning cylinder (9) is fixed on each of the outer sides of the support frame (1). The cylinder barrels of the two tensioning cylinders (9) are fixedly connected to the support frame (1). The piston rod ends of the two tensioning cylinders (9) press against the limiting block (8.2) on the head of the scraper conveyor (8). The scraper chain (10) is laid in the upper and lower chain grooves of the scraper conveyor. The scraper chain (10) and the sprocket (4) mesh. The driving device for the high-speed card-breaking scraper conveyor includes a card-breaking cylinder assembly (7). The card-breaking cylinder assembly (7) is connected to the support frame (1) of the high-speed card-breaking scraper conveyor driving device. A first limiting part is provided on the rotating part of the high-speed card-breaking scraper conveyor driving device that rotates synchronously with the sprocket (4). A second limiting part is provided at one end of the card-breaking cylinder assembly (7) near the rotating part. The cylinder of the card-breaking cylinder assembly (7) is slidably assembled in the cavity inside the support frame (1) along its extension and retraction direction. The end of the cylinder extends out of the cavity and is connected to the second limiting part. When the card-breaking cylinder assembly (7) extends and the first limiting part meshes with the second limiting part, the sprocket (4) is locked. One end of the card-breaking cylinder assembly (7) is supported by the partition (8.1) of the scraper conveyor as a reaction force, and the other end pushes the high-speed card-breaking scraper conveyor driving device to move along the conveying direction through the first limiting part.

2. The scraper conveyor according to claim 1, characterized in that: The drive device for the high-speed scraper conveyor also includes a connecting seat assembly (2), a drive unit (3), a transmission shaft (5), and a semi-circular bushing (6); two connecting seat assemblies (2) are installed on both sides of the support frame (1) and fixed to the support frame (1) by bolts; the connecting seat assembly (2) includes a connecting seat, a bearing assembly, and a drive shaft (2.1); the output end of the drive shaft (2.1) of each of the two connecting seat assemblies (2) is connected to a sprocket (4); the input end of the drive shaft (2.1) of at least one connecting seat assembly (2) is connected to the drive unit (3), and the drive unit (3) is fixed to the connecting seat assembly (2) by bolts; the transmission shaft (5) is connected between the two sprockets (4); the two semi-circular bushings (6) are a group and are installed in the middle of the transmission shaft (5) by bolts, and a first limiting part is arranged on the outer middle circumference of the two semi-circular bushings (6); the scraper cylinder assembly (7) is arranged in the middle of the support frame (1) and aligned with the first limiting part.

3. A scraper conveyor according to claim 2, characterized in that: The piston rod end of the described hydraulic cylinder assembly (7) extends out of the cavity and is connected to a limiting plate (7.3). The limiting plate (7.3) stops the piston rod end in the cavity shell, preventing it from retracting into the cavity.

4. A scraper conveyor according to claim 3, characterized in that: The cylinder of the breaker cylinder assembly (7) is equipped with guide blocks (7.2) on both sides of the cylinder barrel. The guide blocks (7.2) slide and guide the cavity of the support frame (1).

5. A scraper conveyor according to claim 1, characterized in that: The drive device for the high-speed scraper conveyor also includes a connecting seat assembly (2), a drive unit (3), and a semi-circular bushing (6). The two connecting seat assemblies (2) are installed on both sides of the support frame (1) and fixed to the support frame (1) by bolts. The connecting seat assembly (2) includes a connecting seat, a bearing assembly, and a drive shaft (2.1). The output end of the drive shaft (2.1) of each of the two connecting seat assemblies (2) is connected to a sprocket (4), and the two sprockets (4) are connected together. The input end of the drive shaft (2.1) of at least one connecting seat assembly (2) is connected to the drive unit (3), and the drive unit (3) is fixed to the connecting seat assembly (2) by bolts. The two semi-circular bushings (6) are a group, and the two groups of semi-circular bushings (6) are respectively installed between the connecting seat assemblies (2) and the sprockets (4) on both sides. The two semi-circular bushings (6) in the same group have a first limiting part arranged on the outer middle circumference. The two scraper cylinder assemblies (7) are respectively aligned with the first limiting parts of the two groups of semi-circular bushings (6).

6. A scraper conveyor according to claim 4 or 5, characterized in that: The first limiting part is a ratchet tooth (6.1), and the second limiting part is a fixed pawl (7.1).

7. A scraper conveyor according to claim 4 or 5, characterized in that: The first limiting part is an arc-shaped groove circular array structure, and the second limiting part is an arc-shaped top block.

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