Splitting machine external force elimination device

Abstract

The application provides a splitting machine external force eliminating device, and belongs to the technical field of external force eliminating devices. The device comprises a loading tool, a splitting machine body and a connecting assembly. The connecting assembly comprises a fixing part and an external force eliminating part. The fixing part is arranged at the movable end of the loading tool and is rotationally connected to the top end of the splitting machine body. The external force eliminating part comprises a support frame, an arc-shaped plate A, an arc-shaped plate B and a plurality of telescopic clamping parts. The support frame is arranged at the bottom end of the fixing part and is fixed to the outer end of the arc-shaped plate A. The outer end of the arc-shaped plate A is fixed to the arc-shaped plate B, and the arc-shaped plate A and the arc-shaped plate B jointly surround the outer circle of the splitting machine body. The fixed ends of the plurality of telescopic clamping parts are equidistantly fixed to the outer walls of the arc-shaped plate A and the arc-shaped plate B, and the piston ends of the telescopic clamping parts are all penetrated into the structures directly connected to the telescopic clamping parts and jointly abut against the outer wall of the splitting machine body. The application can reduce the reverse force acting on the splitting machine body during use.

Description

Technical Field

[0001] This application relates to the field of external force relief devices, and more specifically, to an external force relief device for a splitting machine. Background Technology

[0002] Currently, in the existing splitting machines, such as Figure 5 As shown, both a and b are rocks, and a borehole connects them. Rock a is the rock closest to the left side of the borehole, which is on a free face. Rock b is the rock closest to the right side of the borehole, which is on a non-free face. Because rock a is on a free face, when the rocks are split, rock a will move towards the free face under the action of splitting force. Figure 5 Moving in the direction indicated by the arrow will cause the central wedge and the split block near rock a to move in the same direction. Figure 5 The rock splitter deforms in the direction indicated by the arrow. Since current rock splitters are directly fixed to the loader and lack an external force-relief structure, the rock splitter will not move in the direction indicated by the arrow. Figure 5 The movement in the direction indicated by the arrow causes the central wedge and the splitting block near rock a to undergo significant bending deformation, leading to problems such as easy breakage. This indirectly reduces the efficiency of rock splitting and increases the cost of replacing the central wedge and splitting block. Summary of the Invention

[0003] To overcome the above deficiencies, this application provides a rock splitter external force elimination device, which aims to improve the current rock splitter's use of a fixed device directly fixed to the loading machine, which cannot swing to eliminate the reaction force of the rock under splitting force, effectively reducing the probability of deformation of the central wedge and the splitting block near rock a during the splitting process.

[0004] This application provides a device for eliminating external force on a rock splitter, including a loading implement, a rock splitter body, and a connecting assembly.

[0005] The connecting assembly includes a fixing component and an external force relief component. The fixing component is located at the movable end of the loading implement and its top end is rotatably connected to the splitter body. The external force relief component includes a support frame, an arc plate A, an arc plate B, and several telescopic clamping parts. The support frame is located at the bottom end of the fixing component and its outer end is fixed to the arc plate A. The outer end of the arc plate A is connected and fixed to the arc plate B, and the two together surround the outer ring of the splitter body. The fixed ends of the several telescopic clamping parts are respectively fixed at equal intervals to the outer walls of the arc plate A and the arc plate B, and their piston ends all penetrate through the structure directly connected to them and move together to abut against the outer wall of the splitter body.

[0006] In one specific implementation, both sides of the opening of the arc-shaped plate A and the arc-shaped plate B are provided with protrusions, and the corresponding protrusions on the two are fixed by bolts and nuts.

[0007] In a specific embodiment, the fixing member comprises a fixing plate and a rotating part connected to the top end of the fixing plate, the fixing plate is fixed to the outer wall of the support frame, and the rotating part is fixed to the top end of the wedge splitting machine body.

[0008] In a specific embodiment, the rotating part comprises two connecting ear plates A, a connecting arm and two connecting ear plates B, the two connecting ear plates A are parallel and their bottom ends are fixed to the fixing plate, the two connecting ear plates B are also parallel and their bottom ends are fixed to the top end of the wedge splitting machine body, the parallel directions of the two connecting ear plates A and the two connecting ear plates B are perpendicular, and the two ends of the connecting arm are rotatably connected to the two connecting ear plates A and the two connecting ear plates B respectively.

[0009] In the above implementation process, the rotating shafts can be selectively connected to the upper and lower sides of the connecting arm, and bearings can be embedded in the eyelets of the connecting ear plates A and the connecting ear plates B. The rotating shafts and the corresponding bearings can be connected by interference fit or key connection, so that the connecting arm can move around the two connecting ear plates A or the connecting ear plates B, indirectly facilitating the wedge splitting machine body to swing with the connecting arm.

[0010] In a specific embodiment, the wedge splitting machine body comprises a hydraulic cylinder, a center wedge block and two wedge blocks, the top end of the hydraulic cylinder is fixed to the two connecting ear plates B, the two wedge blocks are arranged on the two sides of the bottom end of the fixed end of the hydraulic cylinder, the top end of the center wedge block is fixed to the outer end of the cylinder rod of the hydraulic cylinder, and the center wedge block is in extrusion contact with the two wedge blocks.

[0011] In the above implementation process, the loader tool moves the wedge splitting machine body to insert the center wedge block and the two wedge blocks into the drill hole, and then pushes the center wedge block downward by the cylinder rod of the hydraulic cylinder, so that the wedge block close to the rock a is pushed outward, thereby generating a splitting force to split the rock.

[0012] In a specific embodiment, the center wedge block and the two wedge blocks together form a wedge-shaped structure.

[0013] In a specific embodiment, the loader tool comprises a vehicle body and a mechanical arm, the vehicle body moves on the road surface, the mechanical arm is rotatably connected to the vehicle body and connected to the fixing member, and the mechanical arm specifically comprises an adjusting part A, an adjusting part B and an adjusting part C.

[0014] In a specific embodiment, the adjusting part A comprises a support arm A and a hydraulic cylinder A, the bottom end of the support arm A is rotatably connected to the top end of the vehicle body, and the two ends of the hydraulic cylinder A are rotatably connected to the support arm A and the vehicle body respectively.

[0015] In a specific embodiment, the adjusting part B comprises a branch arm B and a hydraulic cylinder B, one end of the branch arm B is rotatably connected with the outer end of the branch arm A, and two ends of the hydraulic cylinder B are rotatably connected with the outer wall of the branch arm A and one end of the branch arm B respectively.

[0016] In a specific embodiment, the adjusting part C comprises a connecting block and a hydraulic cylinder C, the connecting block is rotatably connected with the outer end of the branch arm B, and two ends of the hydraulic cylinder C are rotatably connected with the branch arm B and the connecting block respectively, and a sliding rotation mechanism is arranged between the connecting block and the fixed plate.

[0017] Compared with the prior art, the application has the following advantages:

[0018] When the splitting machine body is not splitting the rock, the cylinder rods of the plurality of telescopic clamping parts are in the extended state through the control of the hydraulic system in the prior art, and the splitting machine body can be pressed to be fixedly connected with the external force eliminating member, so that the wedge-shaped structure of the splitting machine body is conveniently inserted into the drill hole through the movement of the loading machine tool as shown in Figure 6 , and the splitting machine body as shown in Figure 5 ; when the splitting machine body is splitting the rock, the plurality of telescopic clamping parts are in the pressure relief state through the control of the hydraulic system, so that the corresponding cylinder rods cannot press the splitting machine body, and thus the splitting machine body can freely swing as a whole when splitting the rock to absorb the reverse force of the rock when splitting the rock.

[0019] In summary, the device can make the splitting machine body in a free swinging state when splitting the rock, thereby eliminating the reverse force of the rock and preventing the central wedge block and the splitting block of the splitting machine body from being damaged, the device significantly improves the durability and working reliability of the central wedge block and the splitting block, reduces the time cost for replacing the damaged central wedge block and splitting block, improves the working efficiency of rock splitting, and greatly reduces the production cost caused by replacing the central wedge block and the splitting block. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 is a schematic diagram of the connection relationship structure of the splitting machine body and the connecting assembly provided by the embodiments of the application;

[0022] Figure 2The schematic diagram of the connecting assembly structure provided by the embodiment of the present application;

[0023] Figure 3 The schematic diagram of the external force eliminating member structure provided by the embodiment of the present application;

[0024] Figure 4 The schematic diagram of the splitting machine body structure provided by the embodiment of the present application;

[0025] Figure 5 The schematic diagram of the position relationship structure of the splitting machine body and rock a and rock b provided by the embodiment of the present application;

[0026] Figure 6 The schematic diagram of the structure of the connecting of the loading tool and the splitting machine body and the connecting assembly provided by the embodiment of the present application.

[0027] In the figure: 10-loading tool; 110-vehicle body; 120-mechanical arm; 121-adjusting part A; 1211-branch arm A; 1212-hydraulic cylinder A; 122-adjusting part B; 1221-branch arm B; 1222-hydraulic cylinder B; 123-adjusting part C; 1231-connecting block; 1232-hydraulic cylinder C; 20-splitting machine body; 210-oil cylinder; 220-splitting block; 230-center wedge block; 30-connecting assembly; 310-fixing member; 311-fixing plate; 312-rotating part; 3121-connecting lug plate A; 3122-connecting arm; 3123-connecting lug plate B; 320-external force eliminating member; 321-support frame; 322-arc-shaped plate A; 323-arc-shaped plate B; 324-telescopic clamping part; 325-protruding block. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Please refer to Figure 1 The present application provides a splitting machine external force eliminating device, which comprises a loading tool 10, a splitting machine body 20 and a connecting assembly 30.

[0030] The splitting machine body 20 is fixed on the loading tool 10 through the connecting assembly 30. The loading tool 10 is movably fixed by the fixing part 310 in the connecting assembly 30, and the external force eliminating part 320 in the connecting assembly 30 can effectively reduce the deformation probability of the center wedge and the splitting block of the splitting machine during the splitting process.

[0031] Please refer to Figure 1 and Figure 6 The loading tool 10 comprises a vehicle body 110 and a mechanical arm 120. The vehicle body 110 moves on the road surface. The mechanical arm 120 is rotationally connected to the vehicle body 110 and connected to the fixing part 310. The mechanical arm 120 is specifically divided into an adjusting part A 121, an adjusting part B 122 and an adjusting part C 123. The vehicle body 110 is used to move the splitting machine body 20 to a suitable position for splitting rocks. The design of the mechanical arm 120 can make the position control of the splitting machine body 20 more accurate when splitting rocks.

[0032] In this embodiment, the adjusting part A 121 comprises a supporting arm A 1211 and a hydraulic cylinder A 1212. The bottom end of the supporting arm A 1211 is rotationally connected to the top end of the vehicle body 110. The two ends of the hydraulic cylinder A 1212 are rotationally connected to the supporting arm A 1211 and the vehicle body 110 respectively. The design of the hydraulic cylinder A 1212 is used to make the supporting arm A 1211 be able to angularly deflect around the top end of the vehicle body 110, so as to change the position of the splitting machine body 20.

[0033] In this embodiment, the adjusting part B 122 comprises a supporting arm B 1221 and a hydraulic cylinder B 1222. One side of the supporting arm B 1221 is rotationally connected to the outer end of the supporting arm A 1211. The two ends of the hydraulic cylinder B 1222 are rotationally connected to the outer wall of the supporting arm A 1211 and one end of the supporting arm B 1221 respectively. The design of the hydraulic cylinder B 1222 is used to make the supporting arm B 1221 be able to angularly deflect around the supporting arm A 1211, so as to change the position of the splitting machine body 20.

[0034] In this embodiment, the adjusting part C 123 comprises a connecting block 1231 and a hydraulic cylinder C 1232. The connecting block 1231 is rotationally connected to the outer end of the supporting arm B 1221. The two ends of the hydraulic cylinder C 1232 are rotationally connected to the supporting arm B 1221 and the connecting block 1231 respectively. A sliding rotation mechanism is arranged between the connecting block 1231 and the fixing plate 311. The design of the hydraulic cylinder C 1232 is used to make the connecting block 1231 be able to angularly deflect around the supporting arm B 1221, so as to change the position of the splitting machine body 20. In summary, the adjusting part A 121, the adjusting part B 122 and the adjusting part C 123 are used to make the position of the splitting machine body 20 splitting rocks be controlled more accurately.

[0035] In addition, the sliding rotation mechanism comprises, for example Figure 6The L-shaped plate c, the sliding part d and the rotating part e and the drilling machine f are shown. The rotating part e is connected to the outer end of the adapter block 1231 and includes a frame, a servo motor B and a rotating shaft connected to the output end. The frame is connected to the outer end of the adapter block 1231. The servo motor B is installed in the middle cavity of the frame. The rotating shaft is connected to the L-shaped plate c. The fixed plate 311 is also connected to the L-shaped plate c. The L-shaped plate c is also connected to the sliding part d. The sliding part d includes a servo motor A and a ball screw pair connected to the output end of the servo motor A. The servo motor A is installed on the L-shaped plate c. A screw nut pair is rotatably connected to the ball screw pair. The screw nut pair is in sliding connection with the L-shaped plate c and is connected to the drilling machine f. When operating, the rotating part e can drive the L-shaped plate c to rotate. The working steps are as follows: first, use the drilling machine f to drill a hole in the rock. Then, the rotating part e drives the L-shaped plate c to rotate, so that the splitting blocks 220 are aligned with the center of the hole. Then, the oil cylinder 210 is pushed into the hole, and the rock is split.

[0036] The drilling machine f is a prior art and will not be described here.

[0037] Please refer to Figure 1 , Figure 4 and Figure 5 The splitting machine body 20 includes an oil cylinder 210, a center wedge block 230 and two splitting blocks 220. The oil cylinder 210 is fixed to the two connecting ear plates B3123 at the top end. The two splitting blocks 220 are arranged on both sides of the fixed end of the oil cylinder 210. The center wedge block 230 is fixed to the outer end of the cylinder rod of the oil cylinder 210 and is in extrusion contact with the two splitting blocks 220. Among them, the loader 10 moves the splitting machine body 20, so that the center wedge block 230 and the two splitting blocks 220 are inserted into the drilled hole. The cylinder rod of the oil cylinder 210 is pushed downward, and then the center wedge block 230 is pushed downward. As a result, the splitting block 220 close to the rock a is pushed outward, and then the splitting force is generated to split the rock.

[0038] The center wedge block 230 and the two splitting blocks 220 together form a wedge-shaped structure. Among them, the two splitting blocks 220 and the center wedge block 230 form a wedge-shaped structure, which is convenient for inserting into the drilled hole to split the rock.

[0039] Please refer to Figures 1-3 and Figure 6The adapter assembly 30 comprises a fixing member 310 and an external force eliminating member 320. The fixing member 310 is arranged at the movable end of the loading tool 10 and is rotationally connected to the top end of the splitting machine body 20. The external force eliminating member 320 comprises a support frame 321, an arc-shaped plate A 322, an arc-shaped plate B 323 and a plurality of telescopic clamping portions 324. The support frame 321 is arranged at the bottom end of the fixing member 310 and is fixed to the outer end of the arc-shaped plate A 322. The outer end of the arc-shaped plate A 322 is fixedly connected to the arc-shaped plate B 323, and the arc-shaped plate A 322 and the arc-shaped plate B 323 jointly surround the outer periphery of the splitting machine body 20. The fixed ends of the plurality of telescopic clamping portions 324 are fixedly arranged at the outer walls of the arc-shaped plate A 322 and the arc-shaped plate B 323 at equal intervals, and the piston ends of the plurality of telescopic clamping portions 324 are respectively arranged to penetrate the structures directly connected thereto and jointly abut against the outer wall of the splitting machine body 20. The plurality of telescopic clamping portions 324 can be selected as one of a small oil cylinder or a small hydraulic cylinder.

[0040] In the embodiment, the arc-shaped plate A 322 and the arc-shaped plate B 323 are respectively provided with protrusions 325 at both sides of the openings thereof, and the protrusions 325 on the arc-shaped plate A 322 and the arc-shaped plate B 323 are fixed by means of bolts and nuts. The bolts and nuts are used to facilitate the fixation of the arc-shaped plate A 322 and the arc-shaped plate B 323, so that the external force eliminating member 320 can surround the splitting machine body 20 and abut against the splitting machine body 20, thereby facilitating the reduction of the reverse force brought by the splitting machine body 20 when splitting rocks by means of the external force eliminating member 320.

[0041] In the embodiment, the fixing member 310 comprises a fixed plate 311 and a rotating portion 312 connected to the top end of the fixed plate 311. The fixed plate 311 is fixed to the outer wall of the support frame 321, and the rotating portion 312 is fixed to the top end of the splitting machine body 20. The rotating portion 312 is used to rotationally connect the splitting machine body 20 to the fixed plate 311, so that the splitting machine body 20 can swing with the rotating portion 312 when the external force eliminating member 320 is not abutted, thereby reducing the reverse force brought by the splitting machine body 20 when splitting rocks.

[0042] In the embodiment, the rotating part 312 comprises two connecting ear plates A 3121, a connecting arm 3122 and two connecting ear plates B 3123, the two connecting ear plates A 3121 are designed in parallel and the bottom ends of the two connecting ear plates A 3121 are fixed to the fixed plate 311, the two connecting ear plates B 3123 are also designed in parallel and the bottom ends of the two connecting ear plates B 3123 are fixed to the top end of the splitting machine body 20, the parallel directions of the two connecting ear plates A 3121 and the two connecting ear plates B 3123 are perpendicular to each other, and the two ends of the connecting arm 3122 are rotatably connected to the two connecting ear plates A 3121 and the two connecting ear plates B 3123 respectively. Among them, the upper and lower sides of the connecting arm 3122 can be selectively connected to the rotating shaft, and the connecting ear plates A 3121 and the connecting ear plates B 3123 can be embedded with bearings, and the rotating shaft and the corresponding bearing can be connected by interference fit or key connection, so that the connecting arm 3122 can move around the two connecting ear plates A 3121 or the two connecting ear plates B 3123, which indirectly facilitates the splitting machine body 20 to swing with the connecting arm 3122.

[0043] In use:

[0044] The external force eliminating part 320 is fixed to the bottom of the fixed plate 311 and located at the periphery of the splitting machine body 20, and there is a gap between the circle formed by the arc-shaped plate A 322 and the arc-shaped plate B 323 in the external force eliminating part 320 and the periphery of the splitting machine body 20. When the splitting machine body 20 is not splitting the rock, through the control of the hydraulic system in the prior art, the cylinder rods of the plurality of telescopic clamping parts 324 are in the state of extension, and the splitting machine body 20 can be pressed tightly, so that the splitting machine body 20 is fixedly connected with the external force eliminating part 320. Thus, it is convenient to insert the wedge-shaped structure of the splitting machine body 20 into the drill hole by moving the loader 10 as shown in Figure 6 , and the splitting machine body 20 as shown in Figure 5 When the splitting machine body 20 is splitting the rock, through the control of the hydraulic system, the plurality of telescopic clamping parts 324 are in the state of pressure relief, so that the corresponding cylinder rods cannot press the splitting machine body 20 tightly. Thus, when the splitting machine body 20 is splitting the rock, the whole splitting machine body 20 can swing freely with the cracking of the rock, absorb the reverse force of the rock when splitting the rock, prevent the center wedge block 230 and the splitting block 220 from being damaged, such as bending and breaking, and greatly improve the durability and reliability.

[0045] Among them, the above-mentioned hydraulic system is the prior art, which will not be described here.

[0046] It should be noted that the specific model and specification of the hydraulic cylinder A 1212, the hydraulic cylinder B 1222, the hydraulic cylinder C 1232, the oil cylinder 210, the center wedge block 230, the splitting block 220 and the telescopic clamping part 324 need to be selected and determined according to the actual specification of the device. The specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0047] The power supply and principle of the sliding part d, the rotating part e, the hydraulic cylinder A1212, the hydraulic cylinder B1222, the hydraulic cylinder C1232, the oil cylinder 210 and the telescopic clamping part 324 are clear to those skilled in the art, and will not be described in detail here.

[0048] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wedge splitting machine external force elimination device, characterized by, The utility model relates to a split machine body (20) and a connecting assembly (30) comprising a fixed part (310) and an external force eliminating part (320), the fixed part (310) is arranged at the movable end of the loading tool (10) and is rotatably connected to the top end of the split machine body (20), the external force eliminating part (320) comprises a support frame (321), an arc plate A (322), an arc plate B (323) and a plurality of telescopic clamping parts (324), the support frame (321) is arranged at the bottom end of the fixed part (310) and is fixed to the outer end of the arc plate A (322), the outer end of the arc plate A (322) is fixedly connected to the arc plate B (323) and both of them jointly enclose the outer ring of the split machine body (20), the fixed ends of the plurality of telescopic clamping parts (324) are equidistantly fixed to the outer walls of the arc plate A (322) and the arc plate B (323) respectively, and the piston ends thereof are all penetrated through the structures directly connected thereto and jointly abut against the outer wall of the split machine body (20). The fixed part (310) comprises a fixed plate (311) and a rotating part (312) connected to the top end thereof, the fixed plate (311) is fixed to the outer wall of the support frame (321), and the rotating part (312) is fixed to the top end of the split machine body (20). The rotating part (312) comprises two connecting ear plates A (3121), a connecting arm (3122) and two connecting ear plates B (3123), the two connecting ear plates A (3121) are designed in parallel and the bottom ends thereof are fixed to the fixed plate (311), the two connecting ear plates B (3123) are also designed in parallel and the bottom ends thereof are fixed to the top end of the split machine body (20), the parallel directions of the two connecting ear plates A (3121) and the two connecting ear plates B (3123) are perpendicular to each other, and the two ends of the connecting arm (3122) are rotatably connected to the two connecting ear plates A (3121) and the two connecting ear plates B (3123) respectively. The arc plate A (322) and the arc plate B (323) are provided with protrusions (325) on both sides of the opening thereof, and the corresponding protrusions (325) on the arc plate A (322) and the arc plate B (323) are fixed by bolt and nut cooperation. The split machine body (20) comprises a cylinder (210), a center wedge block (230) and two split blocks (220), the top end of the cylinder (210) is fixed to the two connecting ear plates B (3123), the two split blocks (220) are arranged on both sides of the bottom of the fixed end of the cylinder (210), the top end of the center wedge block (230) is fixed to the outer end of the cylinder rod of the cylinder (210) and is in extrusion contact with the two split blocks (220). The center wedge block (230) and the two split blocks (220) jointly form a wedge-shaped structure. ​ 2. The wedge splitting machine external force elimination device according to claim 1, characterized in that, ​ 3. The wedge splitting machine external force elimination device according to claim 2, characterized in that, ​ 4. The wedge splitting machine external force elimination device according to claim 2, characterized by, The loading tool (10) comprises a vehicle body (110) and a mechanical arm (120), the vehicle body (110) moves on the road surface, the mechanical arm (120) is rotationally connected to the vehicle body (110) and connected with the fixing part (310), and the mechanical arm (120) is specifically divided into an adjusting part A (121), an adjusting part B (122) and an adjusting part C (123).

5. The wedge splitting machine external force elimination device according to claim 4, characterized by The adjusting part A (121) comprises a supporting arm A (1211) and a hydraulic cylinder A (1212), the bottom end of the supporting arm A (1211) is rotationally connected to the top end of the vehicle body (110), and the two ends of the hydraulic cylinder A (1212) are respectively rotationally connected with the supporting arm A (1211) and the vehicle body (110).

6. The wedge splitting machine external force elimination device according to claim 5, characterized by The adjusting part B (122) comprises a supporting arm B (1221) and a hydraulic cylinder B (1222), one side of the supporting arm B (1221) is rotationally connected with the outer end of the supporting arm A (1211), and the two ends of the hydraulic cylinder B (1222) are respectively rotationally connected with the outer wall of the supporting arm A (1211) and one end of the supporting arm B (1221).

7. The wedge splitting machine external force elimination device according to claim 6, characterized in that, The adjusting part C (123) comprises a connecting block (1231) and a hydraulic cylinder C (1232), the connecting block (1231) is rotationally connected with the outer end of the supporting arm B (1221), the two ends of the hydraulic cylinder C (1232) are respectively rotationally connected with the supporting arm B (1221) and the connecting block (1231), and a sliding rotation mechanism is arranged between the connecting block (1231) and the fixing plate (311).

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