Cab seat for a truck crane

Abstract

The utility model relates to a cab seat of automobile crane, aims at solving the problem of insufficient adaptability of the existing seat under complex working conditions, functional attenuation after long -term use and the like, and improves the comfort, safety and operation convenience of the driver. The seat comprises a seat body and a damping mechanism. The damping cylinder and the damping air bag of the damping mechanism work cooperatively, effectively filter high-frequency and low-frequency vibration, and ensure the comfort of the driver in a bumpy road section and high-frequency vibration operation. The locking assembly can lock the damping stroke of the seat at different positions, and adapt to different working conditions. In severe working conditions, such as continuous passing of large road pits, the driver can operate the locking handle to the lowest gear, the seat height is at the lowest stroke, the head is avoided from colliding with the cab roof, and effective safety protection is provided.

Description

Technical Field

[0001] This utility model relates to the field of truck crane cab seat technology, and in particular to a seat suitable for truck crane cabs, which aims to improve the driver's comfort, safety and ease of operation under complex working conditions. Background Technology

[0002] The cab seat of a truck crane is a crucial component ensuring the operator's comfort, safety, and efficiency during long working hours. Existing cab seats are insufficiently adaptable to complex working conditions, especially when traveling on bumpy roads, where the seat sways significantly, and the head is prone to hitting the cab ceiling. Furthermore, the seat's shock absorption deteriorates rapidly after prolonged use, leading to lower back fatigue and a poor driving experience.

[0003] Patent application CN201921140723.6 discloses a rotating seat mechanism for a folding boom truck crane, including a seat fixedly mounted on a connecting frame. The connecting frame is connected to connecting rod I and connecting rod II, the other ends of which are movably connected to a mounting seat. The mounting seat is fixed to the front end of the turntable structure, and a drive cylinder is movably connected between the connecting frame and the mounting seat. The seat in this application is located at the lower front end of the turntable structure, providing good visibility and eliminating blind spots during operation, thus ensuring operational safety. During seat rotation, the direction remains constant, ensuring the operator can always observe the lifting point area, further improving operational safety. The low seat position facilitates operator access for climbing.

[0004] However, the seats in the aforementioned patented technologies lack shock absorption, fail to address the shortcomings of existing technologies, and do not provide any technological inspiration for solving existing problems. Therefore, a driver's cab seat that can effectively solve these problems is needed. Utility Model Content

[0005] The purpose of this utility model is to provide a driver's cab seat for a truck crane to solve the problems mentioned in the background art above:

[0006] (1) How to improve the comfort, safety and ease of operation of seats under complex working conditions by optimizing their design and structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A driver's cab seat for a truck crane;

[0009] Including the seat body and the shock absorption mechanism;

[0010] The seat body is mounted on the floor of the truck crane's cab via a shock-absorbing mechanism;

[0011] The shock absorption mechanism includes a lifting linkage frame and an airbag assembly. The lifting linkage frame includes an upper split base, a lower split base, a first positioning shaft, a second positioning shaft, and two sets of linkage assemblies. The upper split base and the lower split base are arranged at intervals. The upper split base and the lower split base each have cavities for arranging connecting assemblies. The upper split base has horizontal first slide rails on both sides of its interior. The two ends of the first positioning shaft are respectively connected to the two sides of the cavity of the upper split base. The lower split base has horizontal second slide rails on both sides of its interior. The two ends of the second positioning shaft are respectively connected to the two sides of the cavity of the lower split base.

[0012] Two sets of linkage assemblies are located on both sides of the cavity of the upper split base and the cavity of the lower split base, respectively. The linkage assembly includes a first cross arm and a second cross arm. The middle part of the first cross arm is hinged to the middle part of the second cross arm. The upper end of the first cross arm is engaged with the first slide rail of the upper split base. The upper end of the first cross arm can reciprocate along the direction of the first slide rail. The upper end of the second cross arm is hinged to the first positioning shaft. The lower end of the second cross arm is engaged with the second slide rail of the lower split base. The lower end of the second cross arm can reciprocate along the direction of the second slide rail. The lower end of the first cross arm is hinged to the second positioning shaft.

[0013] The airbag assembly includes an upper support plate, a lower support plate, and a shock-absorbing airbag. The two ends of the upper support plate are fixedly connected to the upper part of the second cross arm of the two sets of connecting rod assemblies, respectively. The two ends of the lower support plate are fixedly connected to the lower part of the first cross arm of the two sets of connecting rod assemblies, respectively. The upper and lower ends of the shock-absorbing airbag are respectively bonded to the upper support plate and the lower support plate. The shock-absorbing airbag is supplied with air by an external independent air tank.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the lifting linkage frame also includes a first sliding shaft and a second sliding shaft. The first sliding shaft is installed on the upper end of the first cross arm of the two sets of linkage assemblies. The two ends of the first sliding shaft extend outward from the two sides of the two sets of linkage assemblies respectively. The first sliding shaft extending outward from the corresponding linkage assembly is equipped with a first roller connected to the first slide rail.

[0016] The second sliding shaft is installed at the lower end of the second cross arm of the two sets of linkage assemblies. The two ends of the second sliding shaft extend outward from the two sides of the two sets of linkage assemblies respectively. The second sliding shaft extending outward from the corresponding linkage assembly is equipped with the second roller and the second slide rail.

[0017] Furthermore, the damping mechanism also includes a damping cylinder, the cylinder body of which is hinged to the first sliding shaft, and the piston rod end of which is hinged to the upper support plate.

[0018] Furthermore, the lifting linkage frame also includes a first sleeve and a second sleeve. The first sleeve is fitted on the outer wall of the first positioning shaft and can rotate circumferentially relative to the first positioning shaft. The upper end of the second cross arm is fixedly connected to the outer wall of the first sleeve, and the second cross arm is hinged to the first positioning shaft through the first sleeve.

[0019] The second sleeve is fitted onto the outer wall of the second positioning shaft. The second sleeve can rotate circumferentially relative to the second positioning shaft. The lower end of the first cross arm is fixedly connected to the outer wall of the second sleeve. The first cross arm is hinged to the second positioning shaft through the second sleeve.

[0020] Furthermore, the shock absorption mechanism also includes a locking assembly, which includes a hinge seat, a locking plate, a tension spring, and a limiting post. The limiting post is fixedly connected to the side wall of the upper split base, and the hinge seat is fixedly connected to the lower split base located below the limiting post. The lower end of the locking plate is hinged to the hinge seat, and the upper part of the locking plate has a limiting groove that cooperates with the limiting post. One end of the tension spring is connected to the middle of the locking plate, and the other end of the tension spring is connected to the hinge seat. The tension spring causes the locking plate to tend to move towards the limiting post.

[0021] Furthermore, a handle is fixedly connected to the locking plate.

[0022] With this structure, the damping cylinders and airbags of the shock absorption mechanism work together to effectively filter high-frequency and low-frequency vibrations, ensuring driver comfort on bumpy roads and during high-frequency vibration operations. The locking assembly can lock the seat's damping travel at different positions to adapt to different working conditions. In harsh conditions, such as when driving over large potholes, the driver can operate the locking handle to the lowest position, placing the seat at its lowest travel to prevent the head from colliding with the cab roof and providing effective safety protection.

[0023] The beneficial technical effects of the operator's seat of this truck crane:

[0024] (1) The seats are made of aluminum alloy profiles and castings. The processing technology is mature, the weight is light, and the appearance is exquisite.

[0025] (2) The new type of airbag provides air pressure separately to ensure stable and long-lasting pressure; the damping cylinder is short but has high pressure, which can effectively filter vibration energy, so you will not feel tired or uncomfortable even if you drive for a long time.

[0026] (3) The specially designed locking components can lock the seat travel in different positions. The structure is sturdy and reliable, and the operation is simple and convenient. Even in harsh working conditions, it can provide effective safety protection for the driver. Attached Figure Description

[0027] Figure 1 This is a diagram showing the usage state of an embodiment of the driver's cab seat of this truck crane.

[0028] Figure 2 This is a schematic diagram of an embodiment of the driver's cab seat of this truck crane.

[0029] Figure 3 This is a perspective view of the shock absorption mechanism in the embodiment of the driver's cab seat of this truck crane.

[0030] Figure 4 This is a top view of the shock absorption mechanism in the embodiment of the cab seat of this truck crane.

[0031] Figure 5 yes Figure 4 Sectional view along AA.

[0032] Figure 6 yes Figure 4 Sectional view along BB direction.

[0033] Explanation of the labels in the diagram:

[0034] Seat body - 1000; Upper split base - 2100; First slide rail - 2110; Lower split base - 2200; Second slide rail - 2210; First positioning shaft - 2310; Second positioning shaft - 2320; First sliding shaft - 2410; First roller - 2411; First sleeve - 2311; Second sliding shaft - 2420; Second roller - 2421; Second sleeve - 2321; First cross arm - 2510; Second crossarm - 2520; Upper support plate - 2610; Lower support plate - 2620; Shock absorber airbag - 2630; Hinge seat - 2710; Locking plate - 2720; Limiting groove - 2721; Tension spring - 2730; Limiting post - 2740; Handle - 2750; Damping cylinder - 2900; Rubber cover - 2800; Cab - 3000; Steering wheel - 3100; Center console - 3200; Floor plate - 3300. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0036] The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0037] Unless otherwise defined, 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. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Please see Figures 1 to 6 .

[0039] The driver's cab seat of this truck crane includes the seat body 1000 and a shock absorption mechanism (for aesthetic reasons). Figure 1 and Figure 2 The shock absorption mechanism is encased within a rubber cover 2800.

[0040] The seat body 1000 is mounted on the floor 3300 of the truck crane cab 3000 via a shock absorption mechanism and a slide rail mechanism. Through ergonomic calibration, the distance between the seat body 1000 and the steering wheel 3100, instrument panel, and center console 3200 is reasonable, ensuring that the driver's vision is not obstructed, while allowing for unrestricted arm and leg movement.

[0041] The shock absorption mechanism includes a lifting linkage frame, a damping cylinder 2900, a locking assembly, and an airbag assembly.

[0042] The lifting linkage frame includes an upper split base 2100, a lower split base 2200, a first sliding shaft 2410, a second sliding shaft 2420, a first sleeve 2311, a second sleeve 2321, a first positioning shaft 2310, a second positioning shaft 2320, and two sets of linkage assemblies.

[0043] The upper split base 2100 and the lower split base 2200 are arranged at an interval. The upper split base 2100 and the lower split base 2200 have cavities for arranging connecting components. The upper split base 2100 has horizontal first slide rails 2110 on both sides inside. The two ends of the first positioning shaft 2310 are respectively connected to the two sides of the cavity of the upper split base 2100. The lower split base 2200 has horizontal second slide rails 2210 on both sides inside. The two ends of the second positioning shaft 2320 are respectively connected to the two sides of the cavity of the lower split base 2200.

[0044] Two sets of linkage assemblies are located on both sides of the cavity of the upper split base 2100 and the cavity of the lower split base 2200, respectively. The linkage assembly includes a first cross arm 2510 and a second cross arm 2520. The middle part of the first cross arm 2510 is hinged to the middle part of the second cross arm 2520. A first sliding shaft 2410 is installed on the upper end of the first cross arm 2510 of the two sets of linkage assemblies. The two ends of the first sliding shaft 2410 extend outward from both sides of the two sets of linkage assemblies, respectively. A first roller 2411 is installed on the first sliding shaft 2410 extending outward from the corresponding linkage assembly. The upper end of the first cross arm 2510 can reciprocate along the direction of the first sliding rail 2110.

[0045] The first sleeve 2311 is fitted onto the outer wall of the first positioning shaft 2310. The first sleeve 2311 can rotate circumferentially relative to the first positioning shaft 2310. The upper end of the second cross arm 2520 is welded and fixed to the outer wall of the first sleeve 2311. The second cross arm 2520 is hinged to the first positioning shaft 2310 through the first sleeve 2311. The upper end of the second cross arm 2520 is hinged to the first positioning shaft 2310. The second sliding shaft 2420 is installed at the lower end of the second cross arm 2520 of the two sets of connecting rod assemblies. The two ends of the second sliding shaft 2420 extend outward from both sides of the two sets of connecting rod assemblies respectively. The second roller 2421 of the second slide rail 2210 is installed on the second sliding shaft 2420 extending outward from the corresponding connecting rod assembly.

[0046] The second sleeve 2321 is fitted onto the outer wall of the second positioning shaft 2320. The second sleeve 2321 can rotate circumferentially relative to the second positioning shaft 2320. The lower end of the first cross arm 2510 is welded and fixed to the outer wall of the second sleeve 2321. The first cross arm 2510 is hinged to the second positioning shaft 2320 through the second sleeve 2321. The lower end of the second cross arm 2520 can reciprocate along the direction of the second slide rail 2210.

[0047] The airbag assembly includes an upper support plate 2610, a lower support plate 2620, and a shock-absorbing airbag 2630. The two ends of the upper support plate 2610 are fixed to the upper part of the second cross arm 2520 of the two sets of connecting rod assemblies, respectively. The two ends of the lower support plate 2620 are fixed to the lower part of the first cross arm 2510 of the two sets of connecting rod assemblies, respectively. The upper and lower ends of the shock-absorbing airbag 2630 are respectively bonded to the upper support plate 2610 and the lower support plate 2620. The shock-absorbing airbag 2630 is supplied with air by an external independent air tank.

[0048] The cylinder body of the damping cylinder 2900 is hinged to the first sliding shaft 2410, and the piston rod end of the damping cylinder 2900 is hinged to the upper support plate 2610.

[0049] The locking assembly includes a hinge seat 2710, a locking plate 2720, a tension spring 2730, and a limiting post 2740. The limiting post 2740 is welded and fixed to the side wall of the upper split base 2100. The hinge seat 2710 is fixed to the lower split base 2200 located below the limiting post 2740 by bolts. The lower end of the locking plate 2720 is hinged to the hinge seat 2710. The upper part of the locking plate 2720 has a limiting groove 2721 that mates with the limiting post 2740. One end of the tension spring 2730 is connected to the middle of the locking plate 2720, and the other end of the tension spring 2730 is connected to the hinge seat 2710. The tension spring 2730 causes the locking plate 2720 to tend to move towards the limiting post 2740.

[0050] The shock absorption mechanism on the underside of the seat body 1000 is used to reduce the vibration energy generated when the vehicle is in motion; the seat body 1000 is equipped with a backrest adjustment mechanism and a lifting mechanism as in the prior art, for adjusting the backrest angle and height of the seat; a slide rail mechanism is provided at the bottom for adjusting the fore-and-aft position of the seat; the entire seat is lightweight, each adjustment mechanism rotates flexibly, and the overall appearance of the seat is exquisite and the structure is sturdy.

[0051] The seat utilizes a specially designed locking assembly to lock the shock-absorbing mechanism of the seat base in different positions, thus enabling a single seat to have different shock-absorbing strokes. The shock-absorbing mechanism is constructed by welding together an upper and lower split base and a linkage mechanism, ensuring robust and reliable performance. It is equipped with a damping cylinder 2900 and a shock-absorbing airbag 2630. The damping cylinder 2900 has a restoring force Pf of up to 1200N and a compression force Py of up to 1600N, effectively mitigating and filtering high-frequency vibrations. The shock-absorbing airbag 2630 is supplied with air pressure by an independent air tank, with a maximum pressure of 0.85 MPa, effectively filtering low-frequency vibrations.

[0052] The driver's cab seat of this truck crane is equipped with a sliding rail mechanism, backrest adjustment mechanism, and lifting mechanism, which can be adjusted according to the driver's size and operating habits to ensure the driver's comfort during long-term operation. The sliding rail mechanism can adjust the fore-and-aft position of the seat to ensure that the driver can easily operate the steering wheel 3100, instrument panel, and center console 3200.

[0053] The above description is only one embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A driver's cab seat for a truck crane, characterized in that: Includes the seat body (1000) and the shock absorption mechanism; The seat body (1000) is mounted on the floor plate (3300) of the truck crane cab (3000) via a shock absorption mechanism; The shock absorption mechanism includes a lifting linkage frame and an airbag assembly. The lifting linkage frame includes an upper split base (2100), a lower split base (2200), a first positioning shaft (2310), a second positioning shaft (2320), and two sets of linkage assemblies. The upper split base (2100) and the lower split base (2200) are arranged at intervals. The upper split base (2100) and the lower split base (2200) have cavities for arranging connecting assemblies. The upper split base (2100) has horizontal first slide rails (2110) on both sides of its interior. The two ends of the first positioning shaft (2310) are respectively connected to the two sides of the cavity of the upper split base (2100). The lower split base (2200) has horizontal second slide rails (2210) on both sides of its interior. The two ends of the second positioning shaft (2320) are respectively connected to the two sides of the cavity of the lower split base (2200). Two sets of linkage assemblies are respectively located on both sides of the cavity of the upper split base (2100) and the cavity of the lower split base (2200). The linkage assembly includes a first cross arm (2510) and a second cross arm (2520). The middle part of the first cross arm (2510) is hinged to the middle part of the second cross arm (2520). The upper end of the first cross arm (2510) cooperates with the first slide rail (2110) of the upper split base (2100). 10) The upper end can reciprocate along the first slide rail (2110), the upper end of the second cross arm (2520) is hinged to the first positioning shaft (2310), the lower end of the second cross arm (2520) is engaged with the second slide rail (2210) of the lower split base (2200), the lower end of the second cross arm (2520) can reciprocate along the second slide rail (2210), and the lower end of the first cross arm (2510) is hinged to the second positioning shaft (2320); The airbag assembly includes an upper support plate (2610), a lower support plate (2620), and a shock-absorbing airbag (2630). The two ends of the upper support plate (2610) are fixedly connected to the upper part of the second cross arm (2520) of the two sets of linkage assemblies, respectively. The two ends of the lower support plate (2620) are fixedly connected to the lower part of the first cross arm (2510) of the two sets of linkage assemblies, respectively. The upper and lower ends of the shock-absorbing airbag (2630) are respectively bonded to the upper support plate (2610) and the lower support plate (2620). The shock-absorbing airbag (2630) is supplied with air by an external independent air tank.

2. The driver's cab seat of the truck crane according to claim 1, characterized in that: The lifting linkage frame also includes a first sliding shaft (2410) and a second sliding shaft (2420). The first sliding shaft (2410) is installed on the upper end of the first cross arm (2510) of the two sets of linkage assemblies. The two ends of the first sliding shaft (2410) extend out to the sides of the two sets of linkage assemblies respectively. The first sliding shaft (2410) extending out to the outside of the corresponding linkage assembly is equipped with a first roller (2411) connected to the first slide rail (2110). The second sliding shaft (2420) is installed at the lower end of the second cross arm (2520) of the two sets of linkage assemblies. The two ends of the second sliding shaft (2420) extend out to the sides of the two sets of linkage assemblies respectively. The second sliding shaft (2420) extending out to the outside of the corresponding linkage assembly is equipped with a second roller (2421) connected to the second slide rail (2210).

3. The driver's cab seat of the truck crane according to claim 2, characterized in that: The damping mechanism also includes a damping cylinder (2900), the cylinder body of which is hinged to the first sliding shaft (2410), and the piston rod end of the damping cylinder (2900) is hinged to the upper support plate (2610).

4. The driver's cab seat of the truck crane according to claim 1, characterized in that: The lifting linkage frame also includes a first sleeve (2311) and a second sleeve (2321). The first sleeve (2311) is fitted on the outer wall of the first positioning shaft (2310). The first sleeve (2311) can rotate circumferentially relative to the first positioning shaft (2310). The upper end of the second cross arm (2520) is fixedly connected to the outer wall of the first sleeve (2311). The second cross arm (2520) is hinged to the first positioning shaft (2310) through the first sleeve (2311). The second sleeve (2321) is fitted onto the outer wall of the second positioning shaft (2320). The second sleeve (2321) can rotate circumferentially relative to the second positioning shaft (2320). The lower end of the first cross arm (2510) is fixedly connected to the outer wall of the second sleeve (2321). The first cross arm (2510) is hinged to the second positioning shaft (2320) through the second sleeve (2321).

5. The driver's cab seat of the truck crane according to claim 1, characterized in that: The shock absorption mechanism also includes a locking assembly, which includes a hinge seat (2710), a locking plate (2720), a tension spring (2730), and a limiting post (2740). The limiting post (2740) is fixedly connected to the side wall of the upper split base (2100), and the hinge seat (2710) is fixedly connected to the lower split base (2200) located below the limiting post (2740). The locking plate (2720)... The lower end is hinged to the hinge seat (2710), and the upper part of the locking plate (2720) has a limiting groove (2721) that cooperates with the limiting post (2740). One end of the tension spring (2730) is connected to the middle of the locking plate (2720), and the other end of the tension spring (2730) is connected to the hinge seat (2710). The tension spring (2730) drives the locking plate (2720) to move towards the limiting post (2740).

6. The driver's cab seat of the truck crane according to claim 5, characterized in that: A handle (2750) is fixedly connected to the locking plate (2720).

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