Impact-resistant excavator handrail

Abstract

The utility model discloses an anti -impact excavator handrail belongs to mining excavator technical field, including handrail main part, handrail installation mechanism and damping shock absorber, the lower end symmetry of handrail main part sets up handrail installation mechanism, and the middle part of handrail main part sets up damping shock absorber, handrail installation mechanism includes handrail mounting seat, fixed pin shaft, fixed cover, first shock pad and second shock pad, and fixed pin shaft is installed on handrail mounting seat, and fixed pin shaft passes through handrail mounting seat and handrail main part in proper order, and the end of fixed pin shaft sets up fixed cover, and the middle part of handrail mounting seat sets up first shock pad and second shock pad, can effectively absorb and attenuate the vibration of whole car transmission, prevent handrail damage, and then realize the anti -impact of handrail, guarantee handrail can long -term use, avoid the direct threat of the climbing of operating personnel, the safety of overhauling.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining excavators, specifically relating to an impact-resistant excavator handrail. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In large-scale mining operations, mining excavators, as core equipment integrating rock stripping, crushing, cleaning, loading, and transportation, directly affect the efficiency and safety of mining. Crushing operations, in particular, are a critical operating mode with high loads and complex environments, placing stringent requirements on the structural strength and impact resistance of all equipment components. Within the excavator's overall structure, the loading platform is a crucial area for operators to inspect, maintain, and access the equipment. The safety handrails on the loading platform are the core protective structure ensuring operator safety, and their reliability directly impacts the personal safety of the operators. However, during crushing operations, the high-frequency impact of the breaker hammer against hard rock continuously subjects the entire vehicle to significant, periodic impact loads. These impact loads are constantly transmitted through the vehicle structure to the various connecting components of the loading platform. Existing safety handrail structures employ rigid fixed connections, meaning the handrail is directly fixed to the platform via welding or bolts. While this design meets basic protection requirements under stable equipment operation, it exhibits significant performance deficiencies under the impact loads generated during crushing operations. Because rigid connections lack energy-absorbing properties, they cannot effectively absorb and attenuate the impact force transmitted to the handrail, causing the impact energy to act directly on the welds and connections. As crushing operations continue, the repeated impact loads subject the handrail welds and connections to alternating stress, making them highly susceptible to fatigue damage. Initially, this manifests as fine cracks at the welds; if not addressed promptly, these cracks will gradually expand, eventually leading to severe cracking or even breakage at the connections. This not only renders the safety handrail ineffective, posing a direct threat to the safety of operators climbing and maintaining the equipment, but also increases equipment downtime due to frequent maintenance failures, reducing mining efficiency. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an impact-resistant excavator handrail that can effectively absorb and attenuate vibrations transmitted from the entire vehicle, preventing damage to the handrail and thus achieving impact resistance. This ensures the handrail can be used for a long time and avoids posing a direct threat to the safety of operators during climbing and maintenance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An impact-resistant excavator handrail includes a handrail body, a handrail mounting mechanism, and a damping shock absorber. The handrail mounting mechanism is symmetrically arranged at the lower end of the handrail body, and the damping shock absorber is arranged in the middle of the handrail body. The handrail mounting mechanism includes a handrail mounting base, a fixing pin, a fixing sleeve, a first vibration damping pad, and a second vibration damping pad. The fixing pin is mounted on the handrail mounting base and passes through the handrail mounting base and the handrail body in sequence. A fixing sleeve is provided at the end of the fixing pin, and the first vibration damping pad and the second vibration damping pad are sleeved in the middle of the handrail mounting base.

[0006] As a further technical solution, the handrail mounting base includes a first handrail mounting plate and a second handrail mounting plate, with the second handrail mounting plate symmetrically arranged at the upper end of the first handrail mounting plate.

[0007] As a further technical solution, handrail mounting holes are provided at the corners of the first handrail mounting plate, and the handrail mounting holes penetrate the first handrail mounting plate.

[0008] As a further technical solution, a handrail hinge hole is provided on the second handrail mounting plate, and the handrail hinge hole penetrates through the second handrail mounting plate.

[0009] As a further technical solution, a first hinge seat is provided at the lower part of the handrail body, and a second hinge seat is provided at the middle part of the handrail body. Both the first hinge seat and the second hinge seat are provided with hinge holes.

[0010] As a further technical solution, the fixing pin passes sequentially through the first hinge seat on the handrail body and the handrail hinge hole on the second handrail mounting plate to connect the handrail body and the handrail mounting mechanism.

[0011] As a further technical solution, the first vibration damping pad is located inside the hinge hole of the first hinge seat, the outer surface of the first vibration damping pad is in close contact with the hinge hole of the first hinge seat, and the inner surface of the first vibration damping pad is in close contact with the outer surface of the fixing pin.

[0012] As a further technical solution, second vibration damping pads are provided at both ends of the first vibration damping pad, one side of the second vibration damping pad is in close contact with the fixed pin, and the other side of the second vibration damping pad is in close contact with the first vibration damping pad.

[0013] As a further technical solution, one end of the damping shock absorber is provided with a first mounting head, and the other end of the damping shock absorber is provided with a second mounting head, and both the first mounting head and the second mounting head are provided with mounting holes.

[0014] As a further technical solution, the first mounting head and the second hinged seat are connected, and the second mounting head is connected to the vehicle platform.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are: The combination design of the first and second vibration damping pads in the handrail mounting mechanism of this utility model forms a multi-layered buffer structure. The first vibration damping pad, tightly fitted between the hinge hole of the first hinge seat and the fixed pin, directly absorbs the impact energy transmitted along the X and Z directions of the fixed pin. The second vibration damping pads, located at both ends of the first vibration damping pad, effectively attenuate lateral impacts perpendicular to the Y direction of the pin through their tight fit with the fixed pin and the first vibration damping pad. The combination of the first and second vibration damping pads with the hinged connection between the handrail body and the handrail mounting seat achieves multi-dimensional buffering of the impact load generated during crushing operations, significantly reducing the impact energy transmitted to the handrail welds and connections. This effectively absorbs and attenuates vibrations transmitted from the entire vehicle, preventing handrail damage and achieving impact resistance, ensuring long-term use of the handrail and avoiding direct threats to the safety of operators during climbing and maintenance. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] Figure 1 This is a structural diagram of the impact-resistant excavator handrail of this utility model; Figure 2 This is a structural diagram of the handrail installation mechanism of this utility model; Figure 3 This is a structural diagram of the main body of the handrail of this utility model; Figure 4 yes Figure 3 Enlarged view of section A; Figure 5 This is a structural diagram of the damping vibration absorber of this utility model; Figure 6 This is a structural diagram of the handrail mounting base of this utility model; Figure 7 This is a cross-sectional view of the impact-resistant excavator handrail of this utility model; In the diagram: 1. Handrail body; 11. First hinge seat; 12. Second hinge seat; 2. Handrail mounting mechanism; 21. Handrail mounting seat; 211. First handrail mounting plate; 212. Handrail mounting hole; 213. Second handrail mounting plate; 214. Handrail hinge hole; 22. Fixing pin; 23. Second vibration damping pad; 24. Fixing sleeve; 25. First vibration damping pad; 3. Damping damper; 31. First mounting head; 32. Second mounting head. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] Existing safety handrail structures employ rigid fixed connections, meaning the handrail is directly fixed to the platform via welding or bolts. While this design meets basic protection requirements under stable equipment operation, it exhibits significant performance deficiencies under the impact loads generated during crushing operations. Because rigid connections lack energy-absorbing properties, they cannot effectively absorb and attenuate the impact force transmitted to the handrail, causing the impact energy to act directly on the welds and connections. As crushing operations continue, the repeated impact loads subject the handrail welds and connections to alternating stress, making them highly susceptible to fatigue damage. Initially, this manifests as fine cracks at the welds; if not addressed promptly, these cracks will gradually expand, eventually leading to severe cracking or even breakage at the connections. This not only renders the safety handrail ineffective, posing a direct threat to the safety of operators climbing and maintaining the equipment, but also increases equipment downtime due to frequent maintenance failures, reducing mining efficiency.

[0020] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses an impact-resistant excavator handrail, such as... Figure 1 As shown, it includes a handrail body 1, a handrail mounting mechanism 2, and a damping shock absorber 3. The handrail mounting mechanism 2 is symmetrically arranged at the lower end of the handrail body 1, and the damping shock absorber 3 is arranged in the middle of the handrail body 1. like Figure 2 As shown, the handrail mounting mechanism 2 includes a handrail mounting base 21, a fixing pin 22, a fixing sleeve 24, a first vibration damping pad 25, and a second vibration damping pad 23. The fixing pin 22 is mounted on the handrail mounting base 21. The fixing pin 22 passes through the handrail mounting base 21 and the handrail body 1 in sequence. The fixing sleeve 24 is provided at the end of the fixing pin 22. The first vibration damping pad 25 and the second vibration damping pad 23 are sleeved in the middle of the handrail mounting base 21.

[0021] Specifically, the combination design of the first damping pad 25 and the second damping pad 23 in the handrail mounting mechanism 2 forms a multi-layered buffer structure. The first damping pad 25 is tightly attached between the hinge hole of the first hinge seat 11 and the fixed pin 22, and can directly absorb the impact energy transmitted along the X and Z directions of the fixed pin 22. The second damping pad 23, which is set at both ends of the first damping pad 25, can effectively attenuate the lateral impact perpendicular to the Y direction of the pin through its tight attachment with the fixed pin 22 and the first damping pad 25.

[0022] By using the first damping pad 25 and the second damping pad 23 in conjunction with the hinged connection between the handrail body 1 and the handrail mounting base 21, the impact load generated during the crushing operation is buffered in multiple dimensions, which greatly reduces the impact energy transmitted to the handrail weld and connection parts. This effectively absorbs and attenuates the vibration transmitted from the whole vehicle, prevents damage to the handrail, and thus achieves the handrail's impact resistance, ensuring that the handrail can be used for a long time and avoiding a direct threat to the climbing and maintenance safety of the operators.

[0023] like Figure 6 As shown, the handrail mounting base 21 includes a first handrail mounting plate 211 and a second handrail mounting plate 213, with the second handrail mounting plate 213 symmetrically arranged at the upper end of the first handrail mounting plate 211. Handrail mounting holes 212 are provided at the corners of the first handrail mounting plate 211, penetrating through it. Handrail hinge holes 214 are provided on the second handrail mounting plate 213, penetrating through it.

[0024] Specifically, the handrail mounting base 21 adopts an integrated welded structure, which consists of a first handrail mounting plate 211 and a second handrail mounting plate 213. The overall structural strength is ensured through size design and welding process. The first handrail mounting plate 211 is installed on the vehicle platform by bolts.

[0025] The first handrail mounting plate 211 is rigidly fixed to the vehicle platform through the handrail mounting hole 212, providing a stable support foundation for the entire handrail mounting base 21; the second handrail mounting plate 213 cooperates with the first hinge seat 11 of the handrail body 1 through the handrail hinge hole 214, forming a hinge structure under the connection of the fixed pin 22, thus realizing the installation of the handrail body 1.

[0026] like Figure 3 As shown, a first hinge seat 11 is provided at the lower part of the handrail body 1, and a second hinge seat 12 is provided at the middle part of the handrail body 1. Both the first hinge seat 11 and the second hinge seat 12 are provided with hinge holes. A fixing pin passes through the first hinge seat 11 on the handrail body 1 and the handrail hinge hole 214 on the second handrail mounting plate 213 in sequence to connect the handrail body 1 and the handrail mounting mechanism 2.

[0027] like Figure 4 and Figure 7 As shown, the first damping pad 25 is located inside the hinge hole of the first hinge seat 11. The outer surface of the first damping pad 25 is in close contact with the hinge hole of the first hinge seat 11, and the inner surface of the first damping pad 25 is in close contact with the outer surface of the fixing pin 22. Second damping pads 23 are provided at both ends of the first damping pad 25. One side of the second damping pad 23 is in close contact with the fixing pin 22, and the other side of the second damping pad 23 is in close contact with the first damping pad 25.

[0028] Both the first damping pad 25 and the second damping pad are annular structures, and the material can be rubber. The first damping pad 25, through its tight fit with the hinge hole of the first hinge seat 11 and the fixing pin 22, forms a buffer during the transmission of impact loads. When an X-axis impact load acts on the handrail, its elastic deformation characteristics can directly absorb part of the impact energy, transforming rigid transmission into flexible buffering, reducing the direct impact load on the connection between the handrail body 1 and the mounting mechanism. Its complete fit with the inner wall of the hinge hole ensures that the impact energy can be dispersed over a wider area through the damping pad, avoiding damage to the connection points caused by localized stress concentration.

[0029] Meanwhile, under continuous vibration, the handrail body 1 is repeatedly buffered and damped through its own elastic recovery ability, reducing the risk of fatigue damage caused by high-frequency vibration and effectively extending the service life of the handrail connection parts.

[0030] The second damping pad 23 forms lateral support at both ends of the first damping pad 25. Through close contact with the end face of the first damping pad 25 and the fixing pin 22, it acts as a buffer structure for Y-direction impact loads. When a lateral impact acts on the handrail, it can absorb lateral energy through its own deformation, preventing the impact load from being directly transmitted to the connection weld between the handrail mounting plate and the handrail body 1, thus reducing the damage to the connection part caused by lateral stress.

[0031] like Figure 5 As shown, one end of the damping shock absorber 3 is provided with a first mounting head 31, and the other end of the damping shock absorber 3 is provided with a second mounting head 32. Both the first mounting head 31 and the second mounting head 32 are provided with mounting holes. The first mounting head 31 is connected to the second hinge seat 12, and the second mounting head 32 is connected to the upper platform.

[0032] Specifically, the damping vibration damper 3 is existing technology. In existing technology, the damping vibration damper 3 usually has an installation structure that can be connected at both ends, and can be adapted to the vibration components of various equipment according to different working conditions. It achieves control of vibration displacement and energy attenuation through damping characteristics.

[0033] One end of the damping shock absorber 3 is connected to the second hinge seat 12 of the handrail body 1 through the first mounting head 31, and the other end is fixed to the excavator body through the second mounting head 32. While allowing the handrail body 1 to generate a small buffer displacement due to impact, the damping effect limits the displacement amplitude and prevents the handrail from losing its protective function due to excessive shaking.

[0034] The combined use of the first damping pad 25 and the second damping pad 23 effectively reduces the vibration transmitted from the upper part of the excavator during the crushing process, so as to achieve high reliability; the combined use of the damping shock absorber 3 can effectively ensure the safety of the operators.

[0035] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. An impact-resistant excavator handrail, characterized in that, It includes a handrail body, a handrail mounting mechanism, and a damping shock absorber. The handrail mounting mechanism is symmetrically arranged at the lower end of the handrail body, and the damping shock absorber is arranged in the middle of the handrail body. The handrail mounting mechanism includes a handrail mounting base, a fixing pin, a fixing sleeve, a first vibration damping pad, and a second vibration damping pad. The fixing pin is mounted on the handrail mounting base and passes through the handrail mounting base and the handrail body in sequence. A fixing sleeve is provided at the end of the fixing pin, and the first vibration damping pad and the second vibration damping pad are sleeved in the middle of the handrail mounting base.

2. The impact-resistant excavator handrail as described in claim 1, characterized in that, The handrail mounting base includes a first handrail mounting plate and a second handrail mounting plate, with the second handrail mounting plate symmetrically arranged at the upper end of the first handrail mounting plate.

3. The impact-resistant excavator handrail as described in claim 2, characterized in that, Handrail mounting holes are provided at the corners of the first handrail mounting plate, and the handrail mounting holes penetrate the first handrail mounting plate.

4. The impact-resistant excavator handrail as described in claim 2, characterized in that, The second handrail mounting plate is provided with a handrail hinge hole, which penetrates the second handrail mounting plate.

5. The impact-resistant excavator handrail as described in claim 4, characterized in that, The lower part of the handrail body is provided with a first hinge seat, and the middle part of the handrail body is provided with a second hinge seat. Both the first hinge seat and the second hinge seat are provided with hinge holes.

6. The impact-resistant excavator handrail as described in claim 5, characterized in that, The fixing pin passes sequentially through the first hinge seat on the handrail body and the handrail hinge hole on the second handrail mounting plate to connect the handrail body and the handrail mounting mechanism.

7. The impact-resistant excavator handrail as described in claim 6, characterized in that, The first damping pad is located inside the hinge hole of the first hinge seat, the outer surface of the first damping pad is in close contact with the hinge hole of the first hinge seat, and the inner surface of the first damping pad is in close contact with the outer surface of the fixing pin.

8. The impact-resistant excavator handrail as described in claim 7, characterized in that, Second damping pads are provided at both ends of the first damping pad. One side of the second damping pad is in close contact with the fixing pin, and the other side of the second damping pad is in close contact with the first damping pad.

9. The impact-resistant excavator handrail as described in claim 1, characterized in that, One end of the damping shock absorber is provided with a first mounting head, and the other end of the damping shock absorber is provided with a second mounting head. Both the first mounting head and the second mounting head are provided with mounting holes.

10. The impact-resistant excavator handrail as described in claim 9, characterized in that, The first mounting head is connected to the second hinge seat, and the second mounting head is connected to the vehicle platform.

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