A collision protection structure for a hydraulic excavator platform
By employing a combination of sliding rods, helical springs, and warning devices on the hydraulic excavator platform, the problem of easily damaged anti-collision beams was solved, achieving the effect of reducing maintenance costs while maintaining anti-collision function.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU HONGGUANG MASCH CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-07-03
AI Technical Summary
The anti-collision beams of existing hydraulic excavator platforms are easily damaged after a collision, resulting in high maintenance costs and failure of the anti-collision beams' buffering and energy absorption functions.
It adopts a combination structure of sliding rod, lateral and longitudinal helical springs, pressure blocks and directional warning devices. The sliding rod slides within the excavator turntable to buffer the impact force, prevent the crash barrier from deforming, and alert the driver through an alarm to avoid further damage.
It effectively reduces the deformation of the anti-collision beam, lowers maintenance costs, maintains the buffering and energy absorption functions of the anti-collision beam, avoids damage to the contact switches, and improves the service life of the equipment.
Smart Images
Figure CN224451773U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-collision mechanisms, and in particular to an anti-collision structure for a hydraulic excavator platform. Background Technology
[0002] The hydraulic excavator platform usually refers to the upper turntable of a hydraulic excavator. It is an important component of the hydraulic excavator, bearing important components such as the power unit, transmission mechanism, and cab. It is connected to the lower traveling device through a slewing bearing, enabling the working device to achieve 360° rotation.
[0003] Install robust anti-collision beams on the edges or critical parts of the excavator platform. When the platform collides with other objects, the anti-collision beams can absorb and disperse the impact force, reducing damage to the platform structure and equipment.
[0004] When a crash beam deforms during a collision, its internal structure is damaged, and the mechanical properties of the material change. Severe deformation may prevent the crash beam from functioning properly as a buffer and energy absorber, requiring replacement with a new crash beam. Utility Model Content
[0005] The purpose of this invention is to address the problem of high maintenance costs associated with collision-damaged anti-collision beams in the prior art, and to propose an anti-collision structure for hydraulic excavator platforms.
[0006] The technical solution of this utility model is: a collision protection structure for a hydraulic excavator platform, including an excavator turntable, a driver's cab fixedly installed on the top of the excavator turntable, and a collision protection barrier fixedly installed on the side of the excavator turntable.
[0007] The protective assembly includes a slide bar that slides inside the excavator turntable. The end of the slide bar is chamfered. Positioning elements are provided inside the excavator turntable and on both the upper and lower sides of the slide bar. A transverse helical spring is fixedly installed at the end of the slide bar, and a pressure block is fixedly installed at the end of the transverse helical spring.
[0008] Multiple sliding rods are provided and are distributed equidistantly in a straight line along the crash barrier. The sliding rods located at the corners of the crash barrier are slidably connected to the crash barrier. A directional warning device is provided inside the excavator turntable and on the extension line of the pressure block.
[0009] Optionally, the positioning element includes a positioning block, the inclined surface of which contacts a chamfer, the right side of which contacts a pressure block, and a longitudinal helical spring elastically connecting the positioning block and the excavator turntable.
[0010] Optionally, the excavator turntable has a slide rail perpendicular to the slide bar inside, and the positioning block slides up and down in the slide rail.
[0011] Optionally, a longitudinal helical spring is elastically connected between the positioning block and the excavator turntable. Multiple positioning blocks are provided, with positioning blocks provided on both the upper and lower sides of each slide rod.
[0012] Optionally, a telescopic rod is fixedly installed between the center of the end of the slide rod and the pressure block, and the telescopic rod passes through the center of the transverse helical spring.
[0013] Optionally, the orientation warning device includes a contact switch, which is fixedly installed inside the excavator turntable. The contact switch is located on the end extension line of the pressure block, and the contact switch is electrically connected to an alarm.
[0014] Optionally, a swivel joint is rotatably connected between the slide bar located in the middle of the crash barrier and the crash barrier, and the swivel joint and the crash barrier form a lever structure, with the slide bar located at the end of the crash barrier.
[0015] Optionally, multiple alarms are provided, and all multiple alarms are located inside the cockpit, with each alarm corresponding to the position of the sliding bar.
[0016] Compared with the prior art, the present invention has the following beneficial technical effects:
[0017] This invention uses a positioning block to lock the crash barrier between the transverse helical spring and the pressure block, preventing the crash barrier from vibrating and displacing during the operation of the excavator turntable. When the impact force on the crash barrier exceeds the resistance of multiple longitudinal helical springs to the movement of the sliding rod, the crash barrier will displace. This avoids excessive impact force on the crash barrier, which would cause deformation and prevent the crash barrier from properly performing its buffering and energy absorption functions, thus reducing the need to replace the crash barrier and lowering maintenance costs.
[0018] Furthermore, a transverse helical spring is used as a buffer intermediate component to push the pressure block with the slide bar, which prevents the pressure block from squeezing the contact switch with excessive force and causing damage. At the same time, when the pressure block contacts the contact switch at a certain position, the alarm in that direction will sound to alert the driver and prevent further movement that could damage the crash barrier. Attached Figure Description
[0019] Figure 1 A schematic diagram of the overall structure of this utility model is provided;
[0020] Figure 2 A schematic diagram of the anti-collision barrier structure of this utility model is provided;
[0021] Figure 3 for Figure 2 Enlarged schematic diagram of the steering connector structure in part A;
[0022] Figure 4 This is a schematic diagram of the front sectional view of the excavator turntable structure.
[0023] Reference numerals: 1. Excavator turntable; 2. Cabin; 3. Crash guardrail; 4. Protective components; 41. Slide bar; 42. Chamfer; 43. Positioning block; 44. Longitudinal helical spring; 45. Lateral helical spring; 46. Pressure block; 5. Orientation warning component; 51. Steering connector; 52. Contact switch; 53. Alarm. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0025] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Example 1
[0030] This embodiment proposes a collision avoidance structure for a hydraulic excavator platform, such as... Figure 1As shown, it includes an excavator turntable 1, a cab 2 fixedly installed on the top of the excavator turntable 1, and a crash barrier 3 fixedly installed on the side of the excavator turntable 1 to resist collisions.
[0031] like Figure 2 and Figure 3 As shown, the excavator turntable 1 is equipped with a protective component 4. The protective component 4 includes a slide rod 41, which slides inside the excavator turntable 1. The end of the slide rod 41 is chamfered 42. A transverse helical spring 45 is fixedly installed at the end of the slide rod 41. A pressure block 46 is fixedly installed at the end of the transverse helical spring 45.
[0032] After the crash barrier 3 is hit, the slide bar 41 slides inside the excavator turntable 1 to allow the crash barrier 3 to avoid collision and prevent the crash barrier 3 from deforming after the collision, which would affect its subsequent use. The transverse helical spring 45 and the pressure block 46 work together to further reduce the impact force on the crash barrier 3.
[0033] like Figure 4 As shown, positioning components are provided inside the excavator turntable 1 and on both the upper and lower sides of the slide bar 41. The positioning components include positioning blocks 43. The inclined surface of the positioning block 43 contacts the chamfer 42, and the right side of the positioning block 43 contacts the pressure block 46. A slide rail perpendicular to the slide bar 41 is opened inside the excavator turntable 1. The positioning block 43 slides up and down in the slide rail. A longitudinal helical spring 44 is elastically connected between the positioning block 43 and the excavator turntable 1.
[0034] Multiple positioning blocks 43 are provided, and positioning blocks 43 are provided on both the upper and lower sides of each slide bar 41. Multiple slide bars 41 are provided and are distributed equidistantly in a straight line along the crash barrier 3. The slide bar 41 located at the corner of the crash barrier 3 is slidably connected to the crash barrier 3.
[0035] The positioning block 43 is supported by the longitudinal helical spring 44, which locks it between the transverse helical spring 45 and the pressure block 46, preventing the crash barrier 3 from vibrating and displacing during the operation of the excavator turntable 1. The positioning block 43 and the longitudinal helical spring 44 work together such that when the impact force on the crash barrier 3 is less than the resistance of the multiple longitudinal helical springs 44 to the movement of the sliding rod 41, the crash barrier 3 cannot move; however, when the impact force on the crash barrier 3 is greater than the resistance of the multiple longitudinal helical springs 44 to the movement of the sliding rod 41, the crash barrier 3 will displace.
[0036] A telescopic rod is fixedly installed between the center of the end of the slide rod 41 and the pressure block 46. The telescopic rod passes through the center of the transverse helical spring 45 and supports the transverse helical spring 45 to prevent it from bending.
[0037] In this embodiment, the positioning block 43 is used to lock the anti-collision barrier 3 between the transverse helical spring 45 and the pressure block 46, preventing the anti-collision barrier 3 from vibrating and displacing during the operation of the excavator turntable 1. When the collision force on the anti-collision barrier 3 is greater than the resistance of the multiple longitudinal helical springs 44 to the movement of the slide bar 41, the anti-collision barrier 3 will displace, thus avoiding excessive collision force on the anti-collision barrier 3, which would cause the anti-collision barrier 3 to deform and fail to perform its buffering and energy absorption functions properly, requiring the replacement of a new anti-collision barrier 3, thereby reducing high maintenance costs.
[0038] Example 2
[0039] Based on Embodiment 1, this embodiment proposes an anti-collision structure for a hydraulic excavator platform. An orientation warning element 5 is provided inside the excavator turntable 1 and on the extension line of the pressure block 46. The orientation warning element 5 includes a contact switch 52. The contact switch 52 is fixedly installed inside the excavator turntable 1. The contact switch 52 is located on the end extension line of the pressure block 46. The contact switch 52 is electrically connected to an alarm 53.
[0040] A sliding rod 41 located in the middle of the crash barrier 3 is rotatably connected to the crash barrier 3 by a steering connector 51. The steering connector 51 and the crash barrier 3 form a lever structure. The sliding rod 41 located at the end of the crash barrier 3 is also present. When the end of the crash barrier 3 is impacted, the force on the middle of the crash barrier 3 is smaller, and the position of the sliding rod 41 at that position remains unchanged. However, the sliding rod 41 closer to the impact position is displaced, thereby causing the pressure block 46 to move and contact the contact switch 52, thus triggering the alarm 53.
[0041] Multiple alarms 53 are provided, and all alarms 53 are located inside the cockpit 2. Each alarm 53 corresponds to a position of the slide bar 41. When the pressure block 46 at a certain position contacts the contact switch 52, the alarm 53 located in that direction will sound to alert the driver.
[0042] When the pressure block 46 contacts the contact switch 52, the sliding rod 41 moves, causing the pressure block 46 to move through the transverse helical spring 45. Therefore, the transverse helical spring 45 acts as a buffer to prevent the contact switch 52 from being subjected to excessive pressure, which could damage the contact switch 52.
[0043] In this embodiment, the transverse helical spring 45 serves as a buffer intermediate for the slide bar 41 to push the pressure block 46, preventing the pressure block 46 from squeezing the contact switch 52 with excessive force and causing damage. At the same time, when the pressure block 46 contacts the contact switch 52 at a certain position, the alarm 53 located in that direction will sound to alert the driver.
[0044] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A collision protection structure for a hydraulic excavator platform, comprising an excavator turntable (1), wherein a cab (2) is fixedly installed on the top of the excavator turntable (1), and a collision guardrail (3) is fixedly installed on the side of the excavator turntable (1), characterized in that: The protective component (4) includes a slide bar (41) that slides inside the excavator turntable (1). The end of the slide bar (41) is chamfered (42). Positioning components are provided inside the excavator turntable (1) and on both the upper and lower sides of the slide bar (41). A transverse helical spring (45) is fixedly installed at the end of the slide bar (41), and a pressure block (46) is fixedly installed at the end of the transverse helical spring (45). Multiple sliding rods (41) are provided and are distributed equidistantly along the anti-collision barrier (3). The sliding rods (41) located at the corners of the anti-collision barrier (3) are slidably connected to the anti-collision barrier (3). A directional warning element (5) is provided inside the excavator turntable (1) and on the extension line of the pressure block (46).
2. The anti-collision structure of a hydraulic excavator platform according to claim 1, characterized in that: The positioning element includes a positioning block (43), the inclined surface of which contacts the chamfer (42), and the right side of which contacts the pressure block (46).
3. The anti-collision structure of a hydraulic excavator platform according to claim 2, characterized in that: The excavator turntable (1) has a slide rail perpendicular to the slide bar (41) inside, and the positioning block (43) slides up and down in the slide rail.
4. The anti-collision structure of a hydraulic excavator platform according to claim 3, characterized in that: The positioning block (43) is elastically connected to the excavator turntable (1) by a longitudinal helical spring (44). Multiple positioning blocks (43) are provided, and positioning blocks (43) are provided on the upper and lower sides of each slide rod (41).
5. The anti-collision structure of a hydraulic excavator platform according to claim 3, characterized in that: A telescopic rod is fixedly installed between the center of the end of the slide bar (41) and the pressure block (46), and the telescopic rod passes through the center of the transverse helical spring (45).
6. The anti-collision structure of a hydraulic excavator platform according to claim 5, characterized in that: The directional warning device (5) includes a contact switch (52), which is fixedly installed inside the excavator turntable (1). The contact switch (52) is located on the end extension line of the pressure block (46), and the contact switch (52) is electrically connected to an alarm (53).
7. The anti-collision structure of a hydraulic excavator platform according to claim 6, characterized in that: A sliding rod (41) located in the middle of the crash barrier (3) is rotatably connected to the crash barrier (3) by a steering connector (51). The steering connector (51) and the crash barrier (3) form a lever structure. The sliding rod (41) is located at the end of the crash barrier (3).
8. The anti-collision structure of a hydraulic excavator platform according to claim 7, characterized in that: Multiple alarms (53) are provided, and all alarms (53) are located inside the cockpit (2). The multiple alarms (53) correspond to the positions of the slide bar (41).