Hydraulic mechanical arm for mining machinery

Abstract

The hydraulic mechanical arm comprises a supporting arm seat, the left end of the top of the supporting arm seat is movably connected with a large arm through a pin shaft, and a first oil cylinder is movably connected between the upper end of the left side of the outer surface of the large arm and the left side of the supporting arm seat through a pin shaft; second protective covers are movably connected to the two sides of the outer surface of the large arm correspondingly, and connecting plates are fixedly connected to inner cavities of the second protective covers. Through the arrangement of the first oil cylinder, the second oil cylinder and the third oil cylinder, the operation angles of the large arm, the middle arm and the small arm can be conveniently adjusted, and meanwhile the peripheries of the first oil cylinder, the second oil cylinder and the third oil cylinder can be effectively protected under the action of the first protective cover and the second protective cover; the first oil cylinder, the second oil cylinder and the third oil cylinder are effectively prevented from being damaged due to collision of broken stones, and it is guaranteed that the whole machine can be safely operated for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, in particular to a hydraulic mechanical arm used for mining machinery. Background Art

[0002] Mining machinery is the machinery directly used for mineral mining and enrichment selection, including mining machinery and mineral processing machinery. The working principle and structure of prospecting machinery are mostly the same or similar to those of mining machinery used for mining similar minerals. In a broad sense, prospecting machinery also belongs to mining machinery. In addition, a large number of cranes, conveyors, ventilators and drainage machinery are also used in mining operations.

[0003] For example, the Chinese invention provides "a hydraulic mechanical arm for mining machinery", announcement number: CN115157282B, which includes a base, the left end of the base is rotatably connected to a large arm through a rotating shaft, the left end of the large arm is rotatably connected to a middle arm through a rotating shaft, the left end of the middle arm is rotatably connected to a small arm through a rotating shaft, the surface of the base is fixedly connected to a cylinder 1, the output end of the cylinder 1 is hingedly connected to the large arm, the output end of the large arm is fixedly connected to a cylinder 2, the output end of the cylinder 2 is hingedly connected to a middle arm, and the surface of the middle arm is fixedly connected to a cylinder 3. The present invention introduces coolant into a connecting pipe 1, and the coolant flows along the fixed ring after entering the connecting ring. After the coolant fills the connecting ring, the internal pressure of the connecting ring increases after the coolant enters, and the coolant drips through the squeeze column and along the leakage groove 2 opened in the groove, so that the dripping coolant can flow along the connecting pipe 2 to the surface of the drill bit to cool the surface of the drill bit, which has the characteristics of strong practicality.

[0004] Although the hydraulic mechanical arm used for mining machinery in the above technology can adjust the upper arm, middle arm and lower arm through the oil cylinder, due to the lack of effective protective structure around the oil cylinder, it is easy for the surface of the oil cylinder to be damaged by falling gravel during operation, resulting in hydraulic oil leakage and strain inside the cylinder during the extension and retraction of the oil cylinder. In severe cases, the oil cylinder will be unable to work, thereby causing certain economic losses to the personnel and failing to meet the personnel's usage needs. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic mechanical arm for mining machinery, which has the advantage of being able to provide effective safety protection around the oil cylinder, avoiding damage to the oil cylinder caused by direct collision with objects, and ensuring that the overall work can operate safely for a long time.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a hydraulic mechanical arm for mining machinery, comprising a support arm seat, the left end of the top of the support arm seat is movably connected to the big arm through a pin shaft, a first oil cylinder is movably connected between the upper end of the left side of the outer surface of the big arm and the left side of the support arm seat through a pin shaft, both sides of the outer surface of the big arm are movably connected to a second protective cover, the inner cavity of the second protective cover is fixedly connected to a connecting plate, the surface of the connecting plate is provided with a pin hole, the surface of the pin hole is movably connected with a pin rod, a movable cross plate is fixedly connected between the tops of the two pin rods, the bottom of the inner cavity of the big arm is movably connected with a first screw rod through a bearing, the middle end of the movable cross plate is threadedly connected to the surface of the first screw rod, the top of the first screw rod is fixedly installed with a second bevel gear, the upper end of the inner cavity of the big arm is movably connected with a rotating shaft through a bearing, the middle end of the rotating shaft is fixedly installed with a first bevel gear, the first bevel gear is meshed with the second bevel gear, and the positive surface of the big arm The top end of the lifting plug in the lifting plug has a fixed position, and the upper end of the lifting plug has a fixed position, and the lower end of the lifting plug has a fixed position, and the lower end of the lifting plug has a fixed position.

[0007] As a preferred solution, locking holes are provided on both sides of the inner cavity of the fixed sleeve, the middle end of the turntable is threadedly connected with a second screw rod, the back side of the second screw rod is movably connected with a movable plate through a bearing, both ends of the movable plate are movably connected with push rods through pins, and the back side of the push rod is movably connected with a locking block through a pin shaft and the surface of the rotating sleeve.

[0008] As a preferred solution, a second spring is fixedly connected between the two locking blocks on their sides close to each other.

[0009] As a preferred solution, guide grooves are provided around the rotating shaft, and guide blocks are movably connected to the surfaces of the guide grooves, and the surfaces of the guide blocks are fixedly connected to the inner cavity of the rotating sleeve.

[0010] As a preferred solution, a first spring is fixedly connected between the middle end of the back side of the movable push plate and the right end of the inner cavity of the middle arm, both ends of the movable push plate are movably connected with a limiting slide rod, both sides of the limiting slide rod are fixedly connected to the inner cavity of the middle arm, and a reinforcing rod is fixedly connected between the left end of the back side of the movable push plate and the right side of the connecting cross bar.

[0011] As a preferred solution, the upper end of the back side of the upper arm is fixedly connected with a support shaft, and the surface of the support shaft is movably connected to the middle end of the back side of the adjustment frame through a bearing.

[0012] As a preferred solution, the lower ends of both sides of the inner cavity of the upper arm are fixedly connected with guide slide rods, and the surface of the movable cross plate is movably connected to the surface of the guide slide rods.

[0013] As a preferred solution, the upper end of the first screw is movably connected to a support plate via a bearing, and the back side of the support plate is fixedly connected to the upper end of the inner cavity of the upper arm.

[0014] As a preferred solution, positioning holes are provided at both ends of the second protective cover, and the surface of the positioning holes is movably connected with positioning blocks, the surface of the positioning blocks is fixedly connected to the outer surface of the upper arm, and both sides of the outer surface of the middle arm are fixedly connected with L-shaped clamping plates, and the bottom of the first protective cover is movably connected to the surface of the L-shaped clamping plate.

[0015] As a preferred solution, the right ends of both sides of the support arm seat are fixedly connected with mounting plates, and the four sides of the mounting plate are movably connected with mounting bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is convenient for adjusting the working angles of the big arm, the middle arm and the small arm respectively through the arrangement of the first oil cylinder, the second oil cylinder and the third oil cylinder. At the same time, under the action of the first protective cover and the second protective cover, the first oil cylinder, the second oil cylinder and the third oil cylinder can be effectively protected respectively, effectively avoiding the first oil cylinder, the second oil cylinder and the third oil cylinder from being damaged by the collision of gravel, and ensuring that the overall work can be operated safely for a long time. Through the arrangement of the turntable, the rotating sleeve, the fixed sleeve, the rotating shaft, the movable push plate, the connecting cross bar, the clamping block and the clamping hole, the personnel can quickly remove the first protective cover from the top of the middle arm, so that the personnel can perform maintenance work on the third oil cylinder. Through the arrangement of the turntable, the rotating sleeve, the fixed sleeve, the rotating shaft, the first bevel gear, the second bevel gear, the first screw rod, the movable cross plate, the pin rod, the connecting plate and the pin hole, the personnel can quickly remove the second protective cover from both sides of the big arm, so that the personnel can perform maintenance work on the first oil cylinder and the second oil cylinder, thereby bringing great convenience to the personnel's use work.

[0018] 2. The present invention provides a locking hole, a second screw, a movable plate, a push rod and a locking block. When the second screw is operated to rotate and move along the surface of the turntable, the movable plate can be driven to move. The movement of the movable plate can push the two groups of locking blocks to move away from each other through the push rod until the locking block can be inserted into the surface of the locking hole, thereby effectively locking and limiting the rotating sleeve and the fixed sleeve to prevent the rotating sleeve from being displaced or rotated due to accidental touch or accidental collision. Through the provision of the second spring, the second spring is stretched in the process of the two groups of locking blocks moving away from each other, so that the second spring can generate a pulling force between the two groups of locking blocks, so that the subsequent locking blocks can move and reset to the side close to each other.

[0019] 3. The present invention achieves the purpose of guiding the rotating shaft and the rotating sleeve by setting the guide groove and the guide block, ensuring that the rotating shaft and the rotating sleeve can rotate synchronously. By setting the first spring, the first spring can be compressed during the movement of the mobile push plate, so that the first spring can generate tension on the mobile push plate, so that the mobile push plate can be moved and reset later. By setting the limit slide bar, the purpose of guiding the mobile push plate is achieved to avoid the mobile push plate from tilting during the movement. By setting the reinforcing rod, the strength of the connection between the mobile push plate and the connecting cross bar is effectively improved. By setting the support shaft, the purpose of stably supporting the back of the adjustment frame is achieved to avoid the adjustment frame from being tilted by The movable cross plate is tilted due to the force, and the setting of the guide slide bar achieves the purpose of guiding the movable cross plate, thereby preventing the movable cross plate from tilting during the movement; the setting of the support plate achieves the purpose of supporting the upper end of the first screw rod, thereby preventing the first screw rod from tilting due to the force; the setting of the positioning hole and the positioning block achieves the purpose of positioning the second protective cover and the boom, thereby preventing the second protective cover and the boom from offsetting; the setting of the L-shaped clamping plate achieves the purpose of positioning the first protective cover and the middle arm, thereby preventing the first protective cover and the middle arm from offsetting; the setting of the mounting plate and the mounting bolts facilitates personnel to install and fix the support arm seat and the mining machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of the present invention;

[0021] Figure 2 For the present invention Figure 1 A local enlarged view of point A in FIG.

[0022] Figure 3 This is a schematic diagram of the front cross-sectional structure of the upper arm of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the right side of the upper arm of the present invention;

[0024] Figure 5 For the present invention Figure 4 A local enlarged view of point B in FIG.

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the middle arm in the present invention from top view;

[0026] Figure 7 It is a schematic diagram of the top cross-sectional structure of the fixing sleeve of the present invention;

[0027] Figure 8 This is a schematic diagram of the front structure of the first screw of the present invention.

[0028] In the figure: 1, support arm seat; 2, mounting plate; 3, first oil cylinder; 4, breaker hammer; 5, small arm; 6, third oil cylinder; 7, first protective cover; 8, adjustment frame; 9, second protective cover; 10, large arm; 11, L-shaped clamping plate; 12, middle arm; 13, clamping hole; 14, clamping block; 15, second oil cylinder; 16, first bevel gear; 17, fixed sleeve; 18, second bevel gear; 19, movable cross plate; 20, pin rod; 21, guide slide rod; 22, first screw rod; 23, support plate; 24, support shaft; 25, rotating shaft; 26, positioning hole; 27, positioning block; 28, connecting plate; 29, pin hole; 30, limiting slide rod; 31, first spring; 32, movable push plate; 33, reinforcing rod; 34, guide groove; 35, guide block; 36, locking block; 37, push rod; 38, movable plate; 39, second screw; 40, turntable; 41, rotating sleeve; 42, locking hole; 43, second spring; 44, connecting cross bar. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Embodiment 1:

[0032] See also Figure 1-Figure 8As shown, the present invention provides a hydraulic mechanical arm for mining machinery, including a support arm seat 1, the left end of the top of the support arm seat 1 is movably connected to a large arm 10 through a pin shaft, a first oil cylinder 3 is movably connected between the upper end of the left side of the outer surface of the large arm 10 and the left side of the support arm seat 1 through a pin shaft, both sides of the outer surface of the large arm 10 are movably connected to a second protective cover 9, the inner cavity of the second protective cover 9 is fixedly connected to a connecting plate 28, a pin hole 29 is opened on the surface of the connecting plate 28, and a pin rod 20 is movably connected to the surface of the pin hole 29, and the two A movable cross plate 19 is fixedly connected between the tops of the pins 20, a first screw 22 is movably connected to the bottom of the inner cavity of the big arm 10 through a bearing, the middle end of the movable cross plate 19 is threadedly connected to the surface of the first screw 22, a second bevel gear 18 is fixedly installed on the top of the first screw 22, the upper end of the inner cavity of the big arm 10 is movably connected to a rotating shaft 25 through a bearing, a first bevel gear 16 is fixedly installed on the middle end of the rotating shaft 25, the first bevel gear 16 is meshed with the second bevel gear 18, and the upper end of the positive surface of the big arm 10 is fixedly connected A fixed sleeve 17 is connected, a rotating sleeve 41 is movably connected between the inner cavity of the fixed sleeve 17 and the surface of the rotating shaft 25, a rotating disk 40 is fixedly connected to the front surface of the rotating sleeve 41, an adjusting frame 8 is movably connected to the outer surface of the fixed sleeve 17 through a bearing, a second oil cylinder 15 is movably connected between the right end of the adjusting frame 8 and the lower end of the right side of the outer surface of the big arm 10 through a pin shaft, a middle arm 12 is fixedly connected to the left side of the adjusting frame 8, a small arm 5 is movably connected to the left end of the middle arm 12 through a pin shaft, and a breaker 4 is fixedly installed at the bottom of the small arm 5, A third oil cylinder 6 is movably connected between the upper end of the small arm 5 and the right end of the top of the outer surface of the middle arm 12 through a pin shaft, and a first protective cover 7 is movably connected between the two sides of the outer surface of the middle arm 12. A clamping hole 13 is provided on both sides of the first protective cover 7, and a clamping block 14 is movably connected to the surface of the clamping hole 13. A connecting cross bar 44 is fixedly connected between the sides where the two clamping blocks 14 are close to each other, and a movable push plate 32 is fixedly connected to the right side of the connecting cross bar 44. The right end of the movable push plate 32 is movably connected to the outer surface of the rotating sleeve 41 through a bearing.

[0033] In the technical scheme, the first oil cylinder 3, the second oil cylinder 15 and the third oil cylinder 6 are arranged to facilitate the adjustment of the working angles of the big arm 10, the middle arm 12 and the small arm 5. At the same time, under the action of the first protective cover 7 and the second protective cover 9, the first oil cylinder 3, the second oil cylinder 15 and the third oil cylinder 6 can be effectively protected respectively, effectively avoiding the first oil cylinder 3, the second oil cylinder 15 and the third oil cylinder 6 from being damaged by the collision of gravel, and ensuring the long-term and safe operation of the overall work. Through the turntable 40, the rotating sleeve 41, the fixed sleeve 17, the rotating shaft 25, the movable push plate 32, the connecting cross bar 44. The setting of the clamping block 14 and the clamping hole 13 enables personnel to quickly remove the first protective cover 7 from above the middle arm 12, so that personnel can perform maintenance work on the third oil cylinder 6. Through the setting of the turntable 40, the rotating sleeve 41, the fixed sleeve 17, the rotating shaft 25, the first bevel gear 16, the second bevel gear 18, the first screw rod 22, the movable cross plate 19, the pin rod 20, the connecting plate 28 and the pin hole 29, personnel can quickly remove the second protective cover 9 from both sides of the upper arm 10, so that personnel can perform maintenance work on the first oil cylinder 3 and the second oil cylinder 15, thereby bringing great convenience to the use of personnel.

[0034] Embodiment 2:

[0035] Based on the first embodiment, the present invention is as follows Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, locking holes 42 are disclosed on both sides of the inner cavity of the fixed sleeve 17, the middle end of the turntable 40 is threadedly connected with a second screw 39, the back of the second screw 39 is movably connected with a movable plate 38 through a bearing, both ends of the movable plate 38 are movably connected with a push rod 37 through a pin shaft, the back of the push rod 37 is movably connected with a locking block 36 through a pin shaft and the surface of the rotating sleeve 41, and a second spring 43 is fixedly connected between the sides of the two locking blocks 36 that are close to each other.

[0036] In the present technical solution, by setting the locking hole 42, the second screw 39, the movable plate 38, the push rod 37 and the locking block 36, when the second screw 39 is operated to rotate and move along the surface of the turntable 40, the movable plate 38 can be driven to move. The movement of the movable plate 38 can push the two groups of locking blocks 36 to move away from each other through the push rod 37 until the locking blocks 36 can be inserted into the surface of the locking hole 42, and the rotating sleeve 41 and the fixed sleeve 17 can be effectively locked and limited to prevent the rotating sleeve 41 from being displaced or rotated due to accidental touch or accidental collision. By setting the second spring 43, the second spring 43 is stretched in the process of the two groups of locking blocks 36 moving away from each other, so that the second spring 43 can generate a pulling force between the two groups of locking blocks 36, so that the subsequent locking blocks 36 can move and reset to the side close to each other.

[0037] Embodiment three:

[0038] Based on the first embodiment, the present invention is as follows Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, guide grooves 34 are provided around the rotating shaft 25, and guide blocks 35 are movably connected to the surfaces of the guide grooves 34, and the surfaces of the guide blocks 35 are fixedly connected to the inner cavity of the rotating sleeve 41. A first spring 31 is fixedly connected between the middle end of the back of the movable push plate 32 and the right end of the inner cavity of the middle arm 12, and both ends of the movable push plate 32 are movably connected to the limit slide bar 30, and both sides of the limit slide bar 30 are fixedly connected to the inner cavity of the middle arm 12, and a reinforcing rod 33 is fixedly connected between the left end of the back of the movable push plate 32 and the right side of the connecting cross bar 44, and a support shaft 24 is fixedly connected to the upper end of the back of the large arm 10, and the surface of the support shaft 24 is movably connected to the middle end of the back of the adjusting frame 8 through a bearing. The lower ends of the middle arm 12 are fixedly connected with guide slide bars 21, the surface of the movable cross plate 19 is movably connected to the surface of the guide slide bars 21, the upper ends of the first screw rods 22 are movably connected with support plates 23 through bearings, the back of the support plates 23 are fixedly connected to the upper end of the inner cavity of the upper arm 10, both ends of the second protective cover 9 are provided with positioning holes 26, the surfaces of the positioning holes 26 are movably connected with positioning blocks 27, the surfaces of the positioning blocks 27 are fixedly connected to the outer surface of the upper arm 10, both sides of the outer surface of the middle arm 12 are fixedly connected with L-shaped clamping plates 11, the bottom of the first protective cover 7 is movably connected to the surface of the L-shaped clamping plate 11, the right ends of both sides of the support arm seats 1 are fixedly connected with mounting plates 2, and the mounting plates 2 are movably connected with mounting bolts all around.

[0039] The guide slots 34 and the guide blocks 35 are provided to guide the rotating shaft 25 and the rotating sleeve 41, thereby ensuring that the rotating shaft 25 and the rotating sleeve 41 can rotate synchronously. The first spring 31 is provided to compress the first spring 31 during the movement of the movable push plate 32, so that the first spring 31 generates tension on the movable push plate 32, so that the movable push plate 32 can be moved and reset later. The limiting slide bar 30 is provided to guide the movable push plate 32, thereby preventing the movable push plate 32 from tilting during the movement. The reinforcing rod 33 is provided to effectively improve the strength of the connection between the movable push plate 32 and the connecting cross bar 44. The support shaft 24 is provided to stably support the back side of the adjusting frame 8, thereby preventing the movable push plate 32 from tilting during the movement. The adjusting frame 8 tilts due to the force. The guide slide bar 21 is provided to guide the movable cross plate 19 to avoid the movable cross plate 19 from tilting during the movement. The support plate 23 is provided to support the upper end of the first screw rod 22 to avoid the first screw rod 22 from tilting due to the force. The positioning hole 26 and the positioning block 27 are provided to position the second protective cover 9 and the upper arm 10 to avoid the second protective cover 9 and the upper arm 10 from shifting. The L-shaped clamping plate 11 is provided to position the first protective cover 7 and the middle arm 12 to avoid the first protective cover 7 and the middle arm 12 from shifting. The mounting plate 2 and the mounting bolts are provided to facilitate personnel to install and fix the support arm seat 1 and the mining machinery.

[0040] The working principle of the present invention is as follows: through the arrangement of the first cylinder 3, the second cylinder 15 and the third cylinder 6, the working angles of the upper arm 10, the middle arm 12 and the lower arm 5 can be adjusted respectively. At the same time, under the action of the first protective cover 7 and the second protective cover 9, the first cylinder 3, the second cylinder 15 and the third cylinder 6 can be effectively protected respectively, effectively avoiding the first cylinder 3, the second cylinder 15 and the third cylinder 6 from being damaged by the collision of gravel, thereby ensuring that the overall work can operate safely for a long time. When personnel need to disassemble the first protective cover 7 and the second protective cover 9 during the maintenance of the first cylinder 3, the second cylinder 15 and the third cylinder 6, by pushing the turntable 40 and the rotating sleeve 41 to move along the inner cavity of the fixed sleeve 17 and the surface of the rotating shaft 25, the movable push plate 32 can be driven to move. The movement of the movable push plate 32 can drive the connecting cross bar 44 and the block 14 to move until the surface of the block 14 can be removed from the clamping hole 1 3 is detached from the surface of the first protective cover 7 and the limit between the first protective cover 7 and the middle arm 12 can be released. Then the personnel can remove the first protective cover 7 from above the middle arm 12, so that the personnel can perform maintenance operations on the third oil cylinder 6. At the same time, the personnel operate the turntable 40 and the rotating sleeve 41 to rotate along the inner cavity of the fixed sleeve 17, which can drive the rotating shaft 25 and the first bevel gear 16 to rotate, and can drive the second bevel gear 18 and the first screw rod 22 to rotate, and drive the movable cross plate 19 to move upward along the surface of the first screw rod 22. The movement of the movable cross plate 19 can drive the pin rod 20 to move until the pin rod 20 can be detached from the pin hole 29 on the connecting plate 28, and the limit between the connecting plate 28 and the second protective cover 9 and the big arm 10 can be released. Then the personnel can remove the second protective cover 9 from both sides of the big arm 10, so that the personnel can perform maintenance operations on the first oil cylinder 3 and the second oil cylinder 15, thereby bringing great convenience to the personnel's use work.

[0041] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0042] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A hydraulic mechanical arm for mining machinery, comprising a support arm seat (1), characterized in that: The left end of the top of the support arm seat (1) is movably connected to the arm (10) via a pin shaft, and a first oil cylinder (3) is movably connected between the upper end of the left side of the outer surface of the arm (10) and the left side of the support arm seat (1) via a pin shaft, and the two sides of the outer surface of the arm (10) are movably connected to the second protective cover (9), and the inner cavity of the second protective cover (9) is fixedly connected to a connecting plate (28), and the surface of the connecting plate (28) is provided with a pin hole (29), and the surface of the pin hole (29) is movably connected to a pin rod (20), and a movable horizontal plate (19) is fixedly connected between the tops of the two pin rods (20). The bottom of the inner cavity of the upper arm (10) is movably connected to a first screw rod (22) via a bearing, the middle end of the movable horizontal plate (19) is threadedly connected to the surface of the first screw rod (22), the top of the first screw rod (22) is fixedly installed with a second bevel gear (18), the upper end of the inner cavity of the upper arm (10) is movably connected to a rotating shaft (25) via a bearing, the middle end of the rotating shaft (25) is fixedly installed with a first bevel gear (16), the first bevel gear (16) is meshed with the second bevel gear (18), the upper end of the front surface of the upper arm (10) is fixedly connected with a fixed sleeve (17), the fixed sleeve (17) A rotating sleeve (41) is movably connected between the inner cavity and the surface of the rotating shaft (25); a rotating disk (40) is fixedly connected to the front surface of the rotating sleeve (41); an adjusting frame (8) is movably connected to the outer surface of the fixed sleeve (17) via a bearing; a second oil cylinder (15) is movably connected between the right end of the adjusting frame (8) and the lower end of the right side of the outer surface of the big arm (10) via a pin shaft; a middle arm (12) is fixedly connected to the left side of the adjusting frame (8); a small arm (5) is movably connected to the left end of the middle arm (12) via a pin shaft; a breaker hammer (4) is fixedly installed at the bottom of the small arm (5); A third oil cylinder (6) is movably connected between the upper end and the right end of the top of the outer surface of the middle arm (12) through a pin shaft, and a first protective cover (7) is movably connected between the two sides of the outer surface of the middle arm (12). Both sides of the first protective cover (7) are provided with clamping holes (13), and the surface of the clamping hole (13) is movably connected with a clamping block (14), and a connecting cross bar (44) is fixedly connected between the sides of the two clamping blocks (14) that are close to each other, and a movable push plate (32) is fixedly connected to the right side of the connecting cross bar (44), and the right end of the movable push plate (32) is movably connected to the outer surface of the rotating sleeve (41) through a bearing.

2. A hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: Locking holes (42) are provided on both sides of the inner cavity of the fixed sleeve (17); a second screw rod (39) is threadedly connected to the middle end of the rotating disk (40); the back side of the second screw rod (39) is movably connected to a movable plate (38) via a bearing; both ends of the movable plate (38) are movably connected to a push rod (37) via a pin shaft; the back side of the push rod (37) is movably connected to a locking block (36) via a pin shaft and the surface of the rotating sleeve (41).

3. A hydraulic mechanical arm for mining machinery according to claim 2, characterized in that: A second spring (43) is fixedly connected between the two locking blocks (36) on the sides close to each other.

4. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: The rotating shaft (25) is provided with guide grooves (34) on all sides, and the surface of the guide groove (34) is movably connected to a guide block (35), and the surface of the guide block (35) is fixedly connected to the inner cavity of the rotating sleeve (41).

5. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: A first spring (31) is fixedly connected between the middle end of the back side of the movable push plate (32) and the right end of the inner cavity of the middle arm (12); both ends of the movable push plate (32) are movably connected to a limiting slide bar (30); both sides of the limiting slide bar (30) are fixedly connected to the inner cavity of the middle arm (12); a reinforcing rod (33) is fixedly connected between the left end of the back side of the movable push plate (32) and the right side of the connecting cross bar (44).

6. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: The upper end of the back side of the large arm (10) is fixedly connected to a support shaft (24), and the surface of the support shaft (24) is movably connected to the middle end of the back side of the adjustment frame (8) through a bearing.

7. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: The lower ends of both sides of the inner cavity of the upper arm (10) are fixedly connected to guide slide bars (21), and the surface of the movable horizontal plate (19) is movably connected to the surface of the guide slide bars (21).

8. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: The upper end of the first screw rod (22) is movably connected to a support plate (23) via a bearing, and the back side of the support plate (23) is fixedly connected to the upper end of the inner cavity of the upper arm (10).

9. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: Both ends of the second protective cover (9) are provided with positioning holes (26), the surface of the positioning hole (26) is movably connected to a positioning block (27), the surface of the positioning block (27) is fixedly connected to the outer surface of the upper arm (10), both sides of the outer surface of the middle arm (12) are fixedly connected to an L-shaped clamping plate (11), and the bottom of the first protective cover (7) is movably connected to the surface of the L-shaped clamping plate (11).

10. The hydraulic mechanical arm for mining machinery according to claim 1, characterized in that: The right ends of both sides of the support arm seat (1) are fixedly connected to mounting plates (2), and the four sides of the mounting plate (2) are movably connected to mounting bolts.

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