Transverse pin piece for side mounting of flat pin of breaking hammer

Abstract

The transverse pin piece comprises a pressing body, a telescopic body and an elastic piece, a sliding cavity is formed in the pressing body, and the pressing body presses and restrains the end face of a flat pin body in the area between two sets of side clamping plates in the direction close to a lower cylinder body; the two telescopic bodies are in sliding fit in the sliding cavity, one ends of the telescopic bodies extend to the outer side of the pressing body, the ends, exposed to the outer side of the sliding cavity, of the telescopic bodies gradually get close to the side clamping plate in the direction close to the lower cylinder body, and the telescopic bodies are installed on the side clamping plate through end structures. The elastic piece is located between the two telescopic bodies and used for retraction and extension of the telescopic bodies relative to the pressing body. The flat pin body is assembled on the measuring support in a mode of being positively installed relative to the flat pin body and used for restraining the flat pin body and the flat pin groove in a surface pressure mode, the mode can restrain and limit the flat pin body and prevent the flat pin body from moving in the flat pin groove in the depth direction, and the flat pin body can easily form a stepped groove in the flat pin groove under the condition that the length of the flat pin groove is equal to that of the flat pin body. And the structural stability and durability are ensured.

Description

Technical Field

[0001] This utility model relates to a hydraulic breaker technology, specifically a transverse pin for side mounting of a hydraulic breaker flat pin. Background Technology

[0002] The working principle of a hydraulic breaker is as follows: Powered by pressurized oil output from the hydraulic pump of an excavator or loader, the piston reciprocates through a distribution valve. During the stroke, high-pressure hydraulic oil enters the rear chamber of the breaker's cylinder, and the piston, under the combined action of compressed nitrogen and high-pressure oil in the rear cylinder, impacts the chisel and breaks the rock. During the return stroke, high-pressure oil is connected to the front chamber of the cylinder, pushing the piston backward and compressing the nitrogen in the upper cylinder, thus completing one working cycle. The repeated strokes and returns of the piston cause the chisel to impact and break rocks, stones, concrete, etc.

[0003] A hydraulic breaker includes a lower cylinder, side clamps, a chisel, a flat pin, and a flat pin limiter. The side clamps are bolted to both sides of the lower cylinder. The lower cylinder has a flat pin groove for mounting the flat pin, which constrains the chisel, and the flat pin limiter constrains the flat pin limiter. However, in traditional hydraulic breakers, the length of the flat pin is less than or equal to the length of the flat pin groove, and the flat pin limiter (horizontal pin) is assembled from the side. This requires drilling holes in the lower cylinder or side clamps. Furthermore, due to the need to allow for assembly clearance, it is impossible to effectively constrain the end of the flat pin after assembly. During construction, this can easily cause a certain amount of displacement of the flat pin within the flat pin groove. Additionally, in actual use, due to the tendency to fire dry, stepped grooves can form within the flat pin groove. The presence of these stepped grooves can accelerate damage to the flat pin or the lower cylinder. Secondly, since the existing flat pin limiters are all "dead" limiters, it is only possible to judge whether the flat pin is damaged when the limiter fails or based on the operator's experience. Once the flat pin or its limiter is damaged, it is easy to get stuck in the lower cylinder or even cause irreparable damage to the lower cylinder, which seriously affects the subsequent replacement operation. Therefore, it is urgent to solve this problem. Utility Model Content

[0004] The technical problem to be solved by this utility model is:

[0005] The existing flat pin ends cannot be effectively constrained, which easily leads to stepped grooves. Furthermore, after the flat pin is damaged, the flat pin limit cannot be disengaged in time, causing irreparable damage.

[0006] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this utility model, which adopts the following technical solution:

[0007] A cross pin for side mounting of a hydraulic breaker flat pin includes:

[0008] The clamping body has a sliding cavity inside. The clamping body presses against the end face of the flat pin in the area between the two sets of side clamps along the direction close to the lower cylinder.

[0009] The telescopic body is provided in two sets. Both sets of telescopic bodies are slidably fitted in the sliding cavity and one end extends to the outside of the clamping body. The end of the telescopic body exposed outside the sliding cavity gradually approaches the side clamping plate along the direction closer to the lower cylinder. The telescopic body is installed on the side clamping plate through the end structure.

[0010] An elastic element is located between two telescopic bodies and is used for the retraction and extension of the telescopic bodies relative to the pressing body.

[0011] In a preferred embodiment, both ends of the clamping body are equipped with constraint bodies, and the two sets of constraint bodies are respectively fitted onto the outside of the corresponding telescopic body.

[0012] In a preferred embodiment, the side of the clamping body is provided with an ear plate, the ear plate is provided with a guide hole, a guide pin is slidably inserted into the guide hole, and one end of the guide pin is fixed to the surface of the lower cylinder.

[0013] In a preferred embodiment, a winch is installed on the side of the pressing body facing away from the lower cylinder. Two traction ropes are wound on the winch, and the free ends of the two traction ropes are connected to an operating column. The operating column is fixed on the side of the telescopic body facing away from the lower cylinder.

[0014] In a preferred embodiment, the pressing body has a recessed groove on the side facing the lower cylinder. The recessed groove is connected to the sliding cavity and divides the sliding cavity into two. A transmission gear is installed in the recessed groove. Two movable plates are slidably fitted in the recessed groove. The two movable plates are respectively fixed to the ends of the corresponding telescopic bodies. A transmission rack is installed on the opposite side of each of the two movable plates. The transmission rack meshes with both sides of the transmission gear.

[0015] In a preferred embodiment, both ends of the elastic element are connected to corresponding movable plates;

[0016] A cover plate is bolted to the opening of the settling tank.

[0017] In a preferred embodiment, an anti-detachment rope is connected to the clamping body, and a bolt head is connected to the free end of the anti-detachment rope, with the bolt head fixed to the lower cylinder body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The horizontal pin of this utility model is assembled on the measuring bracket in a relatively flat pin upright manner, which is used to constrain the flat pin and the flat pin groove with surface pressure. This method can constrain and limit the flat pin to prevent displacement along the depth direction in the flat pin groove. Secondly, it can address the issue that the flat pin is prone to forming a stepped groove in the flat pin groove when the flat pin groove and the flat pin are of equal length, thus ensuring structural stability and durability.

[0020] 2. The horizontal pin of this utility model adopts a telescopic structure at both ends. It is installed between the side clamps using the end structure. When the flat pin is damaged, the flat pin will squeeze the horizontal pin outward. By limiting the angle range of the end structure, when the outward squeezing force is greater than the force of the elastic element inside the horizontal pin to a certain extent, it will overcome the force of the elastic element and cause the horizontal pin to fall off automatically without being damaged. This prevents the problem of the horizontal pin not being able to fall off in time when it is mounted on the side relative to the flat pin in the traditional way, which would cause the horizontal pin to become unusable. Of course, it also has a certain prompting effect, which is used to remind the operator that the flat pin needs to be replaced.

[0021] 3. Because the horizontal pin of this utility model has the effect of automatic detachment, when the external extrusion force of the flat pin is much greater than the force of the elastic element, the horizontal pin will be ejected, which may easily cause a safety accident. Therefore, a connecting rope and a bolt head are installed on the clamping body, and the bolt head is used to fix it to the lower cylinder body, thereby preventing the occurrence of safety accidents.

[0022] 4. Traditional hydraulic breakers are generally equipped with two flat pins. In actual working conditions, one of the flat pins may be damaged. If one is damaged, the flat pin will be pushed outward by the impact of the chisel, which can easily cause the horizontal pin to be subjected to biased force. After being subjected to biased force, the horizontal pin is prone to twisting and damage. Therefore, this utility model is provided with an ear plate on the clamping body, and a guide pin is inserted in the ear plate. The guide pin is fixed to the side of the lower cylinder. The constraint and guidance of the guide pin can make the horizontal pin move vertically to the lower cylinder when subjected to external extrusion, thereby solving this problem.

[0023] 5. The pressing body of this utility model is equipped with a transmission gear, a moving plate, and a transmission rack to achieve synchronous movement of the two telescopic bodies. When subjected to external extrusion, both ends will retract inward simultaneously, thereby ensuring the structural stability and durability of the cross pin.

[0024] 6. The clamping body of this utility model is also provided with a hinge shaft, which is used to rotate the two operating columns to run in opposite directions at the same time, thereby facilitating the assembly and disassembly operation. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the horizontal pin component of this utility model;

[0026] Figure 2 This is a diagram showing the internal structure of the horizontal pin component of this utility model;

[0027] Figure 3 This is a structural diagram of the horizontal pin component after assembly according to this utility model;

[0028] Figure 4 for Figure 3 Horizontal cross-sectional view of the central cross pin;

[0029] Figure 5This is an assembly diagram of another type of horizontal pin structure of this utility model;

[0030] Figure 6 for Figure 5 Horizontal cross-sectional view of the central cross pin;

[0031] Figure 7 for Figure 6 Cross-sectional view of the central cross pin;

[0032] Figure 8 for Figure 7 Structural diagram of the side of the middle clamping body facing the lower cylinder (without the cover plate installed);

[0033] Figure 9 for Figure 7 Overall structural diagram of the medium-pressure clamping body.

[0034] In the diagram: 110, clamping body; 111, restraint body; 112, ear plate; 113, guide pin; 114, hinge shaft; 115, traction rope; 116, operating column; 117, countersinking opening; 118, transmission gear; 119, transmission rack; 120, telescopic body; 121, moving plate; 122, anti-derailment rope; 123, bolt head; 124, cover plate; 130, elastic element; 200, flat pin body; 300, side clamping plate; 400, lower cylinder body. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Example 1

[0038] like Figure 1 , 2 As shown, a cross pin for side mounting of a hydraulic breaker flat pin includes:

[0039] The clamping body 110 has a sliding cavity inside. The clamping body 110 presses and constrains the end face of the flat pin 200 in the area between the two sets of side clamps 300 along the direction close to the lower cylinder 400. The length of the flat pin 200 is the same as the depth of the flat pin groove.

[0040] The telescopic body 120 is provided in two sets. Both sets of telescopic bodies 120 are slidably fitted in the sliding cavity and one end extends to the outside of the clamping body 110. The end of the telescopic body 120 exposed outside the sliding cavity gradually approaches the side clamping plate 300 in the direction close to the lower cylinder 400. The telescopic body 120 is installed on the side clamping plate 300 through the end structure. A constraint groove can be provided on the opposite side of the side clamping plate 300. The ramp structure at the end of the telescopic body 120 can ensure that the clamping body 110 flattens the pin 200. The inclination angle of the ramp structure is 45°-70°.

[0041] The elastic element 130 is located between the two telescopic bodies 120 for the retraction and extension of the telescopic bodies 120 relative to the pressing body 110.

[0042] After the flat pin 200 is installed, the telescopic body 120 is partially retracted into the clamping body 110 until the length of the horizontal pin is less than the distance between the side clamps 300. Then, the telescopic body 120 and the constraint groove are aligned laterally, and the clamping body 110 is pressed against the end face of the pin 200 near the lower cylinder 400. Finally, the two telescopic bodies 120 are released, and the end structure is used to fit in the constraint groove to constrain the end face of the flat pin 200 to prevent the flat pin 200 from forming a stepped groove in the flat pin groove. When the flat pin 200 is damaged, the chisel acts on the flat pin 200, and the flat pin 2200 is pressed against the clamping body 110. When the external pressing force is greater than the constraint of the assembled flat pin 200, the force of the elastic element 130 can overcome the force of the elastic element 130 to a certain extent, so that the flat pin 200 can automatically fall off. This can prompt the operator to replace the flat pin 200 and prevent the flat pin from further deforming and getting stuck in the lower cylinder 400.

[0043] Example 2

[0044] In the scheme of Example 1, such as Figure 2 As shown, in order to ensure the inward retraction and outward extension of the telescopic body 120, both ends of the clamping body 110 are equipped with constraint bodies 111, and the two sets of constraint bodies 111 are respectively fitted on the outside of the corresponding telescopic body 120.

[0045] Example 3

[0046] In the scheme of Embodiment 1, since the hydraulic breaker is generally equipped with two sets of flat pins 200, if one of the flat pins 200 is damaged, the flat pin 200 will be squeezed outwards from the clamping body 110 on the opposite side, which can easily cause bending deformation of the cross pin. Therefore, the following improvement is made: Figures 5 to 9As shown, the clamping body 110 has an ear plate 112 on its side, and a guide hole is provided on the ear plate 112. A guide pin 113 is slidably inserted into the guide hole, and one end of the guide pin 113 is fixed to the surface of the lower cylinder 400. The guide pin 113 is used to guide the clamping body 110 to prevent structural deformation when the clamping body 110 is subjected to biased outward extrusion.

[0047] Example 4

[0048] In the scheme of Example 3, such as Figure 5 As shown, a hinge shaft 114 is installed on the side of the clamping body 110 facing away from the lower cylinder 400. Two traction ropes 115 are wound around the hinge shaft 114, and the free ends of the two traction ropes 115 are connected to operating columns 116. The operating columns 116 are fixed to the side of the telescopic body 120 facing away from the lower cylinder 400. By rotating the hinge shaft 114, the two traction ropes 115 are driven to move the two operating columns 116 in opposite directions, which facilitates the disassembly and assembly of the cross pin.

[0049] Example 5

[0050] In the scheme of Example 4, such as Figure 6 , 7 As shown in Figure 8, the pressing body 110 has a recessed groove 117 on the side facing downward towards the cylinder 400. The recessed groove 117 communicates with the sliding cavity and divides the sliding cavity into two. A transmission gear 118 is installed inside the recessed groove 117. Two movable plates 121 are slidably fitted inside the recessed groove 117. The two movable plates 121 are respectively fixed to the ends of the corresponding telescopic bodies 120. A transmission rack 119 is installed on the opposite side of each of the two movable plates 121. The transmission rack 119 meshes with both sides of the transmission gear 118. The synchronous movement of the telescopic bodies 120 is achieved by using gear and rack transmission. Even when the pressing body 110 is subjected to an outward squeezing force, the two telescopic bodies 120 will retract inward simultaneously to avoid structural deformation.

[0051] The elastic element 130 is connected to the corresponding movable plate 121 at both ends, and a cover plate 124 is bolted to the opening of the recess 117. The cover plate 124 is used to constrain the movable plate 121 to ensure that the elastic element 130 slides within the recess 117.

[0052] Example 6

[0053] In the scheme of Example 1, such as Figure 5As shown, an anti-detachment rope 122 is connected to the clamping body 110, and a bolt head 123 is connected to the free end of the anti-detachment rope 122. The bolt head 123 is fixed to the lower cylinder 400. Because the cross pin has an automatic detachment effect, when the outward squeezing force of the flat pin 200 is much greater than the force of the elastic element 130, the cross pin will be ejected, which could easily cause a safety accident. Therefore, the connecting rope 122 and the bolt head 123 are installed on the clamping body 110, and the bolt head 123 is used to fix it to the lower cylinder 400, thereby preventing the occurrence of safety accidents.

[0054] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A cross pin member for side mounting a breaking hammer pin, characterized by, Include: Compression body (110), the sliding cavity is arranged inside the compression body (110), and the area between the two groups of side clamping plates (300) is constrained to the end face of the flat pin body (200) in the direction close to the lower cylinder (400); The telescopic body (120) is provided with two groups, and the two groups of telescopic bodies (120) are both slidingly fitted in the sliding cavity and extend to the outside of the compression body (110) at one end, the end of the telescopic body (120) exposed outside the sliding cavity gradually approaches the side clamping plate (300) in the direction close to the lower cylinder (400), and the telescopic body (120) is installed on the side clamping plate (300) through the end structure. The elastic member (130) is located between the two telescopic bodies (120) for the retraction and extension of the telescopic body (120) relative to the compression body (110).

2. A cross pin member for side mounting a breaking hammer pin according to claim 1, characterized in that Both ends of the compression body (110) are provided with a constraint body (111), and the two groups of constraint bodies (111) are respectively sleeved outside the corresponding telescopic body (120).

3. A cross pin member for side mounting a breaking hammer flat pin as defined in claim 1, wherein The side of the compression body (110) is provided with an ear plate (112), the ear plate (112) is provided with a guide hole, the guide pin (113) is slidingly inserted in the guide hole, and one end of the guide pin (113) is fixed to the surface of the lower cylinder (400).

4. A cross pin member for side mounting a breaking hammer flat pin according to claim 3, wherein The side of the compression body (110) opposite to the lower cylinder (400) is provided with a winding shaft (114), two traction ropes (115) are wound on the winding shaft (114), and the free ends of the two traction ropes (115) are connected with an operating column (116), the operating column (116) is fixed to the side of the telescopic body (120) opposite to the lower cylinder (400).

5. A cross pin member for side mounting a breaking hammer according to any one of claims 1 to 4, characterized in that The side of the compression body (110) facing the lower cylinder (400) is provided with a sink port (117), the sink port (117) is communicated with the sliding cavity and divides the sliding cavity into two parts, the transmission gear (118) is installed in the sink port (117), the two moving plates (121) are slidingly fitted in the sink port (117), the two moving plates (121) are respectively fixed at the end of the corresponding telescopic body (120), and the side opposite to the two moving plates (121) is respectively provided with a transmission rack (119), the transmission rack (119) is engaged on both sides of the transmission gear (118).

6. A cross pin member for side mounting a breaking hammer flat pin as defined in claim 5, wherein Both ends of the elastic member (130) are connected with the corresponding moving plates (121); The slot of the sink port (117) is provided with a cover plate (124) through bolts.

7. A cross pin member for side mounting a breaking hammer according to any one of claims 1 to 4, characterized in that The compression body (110) is connected with an anti-dropping rope (122), the free end of the anti-dropping rope (122) is connected with a bolt head (123), and the bolt head (123) is fixed on the lower cylinder (400).

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