阅读说明：本技术 一种半挂车悬挂装置 (Semitrailer suspension device ) 是由 李洋 孙文 于 2020-07-13 设计创作，主要内容包括：本发明涉及半挂车领域,具体的说是一种半挂车悬挂装置,包括纵梁；前悬挂支架机构,所述前悬挂支架机构与纵梁的下表面连接,且前悬挂支架机构包括外齿圈、螺纹杆、第一空气弹簧、前悬挂支架、内螺纹套筒、齿板、液压缸和安装板,所述纵梁的下方设有前悬挂支架,前悬挂支架的上表面通过第一空气弹簧连接有螺纹杆,螺纹杆延伸到下端开口的内螺纹套筒内并与内螺纹套筒螺纹连接；所述内螺纹套筒上端与纵梁转动连接,且内螺纹套筒的外表面固定连接有同轴转动的外齿圈,所述的下表面通过安装板固定连接有水平设置的液压缸,液压缸的输出端固定连接有齿板。本发明提供的半挂车悬挂装置具有可以调节车身高度且缓冲效果好的优点。(The invention relates to the field of semitrailers, in particular to a semitrailer suspension device, which comprises longitudinal beams; the front suspension bracket mechanism is connected with the lower surface of the longitudinal beam and comprises an outer gear ring, a threaded rod, a first air spring, a front suspension bracket, an internal thread sleeve, a toothed plate, a hydraulic cylinder and a mounting plate, wherein the front suspension bracket is arranged below the longitudinal beam, the upper surface of the front suspension bracket is connected with the threaded rod through the first air spring, and the threaded rod extends into the internal thread sleeve with an opening at the lower end and is in threaded connection with the internal thread sleeve; the utility model discloses a hydraulic cylinder, including the longeron, the internal thread sleeve, the outer fixed surface of internal thread sleeve is connected with the longeron rotation, and the coaxial pivoted outer ring gear of external fixed surface fixedly connected with of internal thread sleeve, the lower surface pass through the pneumatic cylinder that mounting panel fixed connection has the level to set up, the output fixedly connected with pinion rack of pneumatic cylinder. The semitrailer suspension device provided by the invention has the advantages of adjustable vehicle body height and good buffering effect.)

1. A semi-trailer suspension device is characterized by comprising a longitudinal beam (4) for supporting, a front suspension bracket mechanism (1), a rear suspension bracket mechanism (5), a plate spring mechanism (3), a movable pull rod mechanism (2) and an oil receiving mechanism (6), wherein the front suspension bracket mechanism (1) is connected with the lower surface of the longitudinal beam (4), and the front suspension bracket mechanism (1) comprises an outer gear ring (11), a threaded rod (12), a first air spring (13), a front suspension bracket (14), an inner threaded sleeve (15), a toothed plate (16), a hydraulic cylinder (17) and a mounting plate (18), a front suspension bracket (14) is arranged below the longitudinal beam (4), the upper surface of the front suspension bracket (14) is connected with a threaded rod (12) through a first air spring (13), and the threaded rod (12) extends into an internal thread sleeve (15) with an opening at the lower end and is in threaded connection with the internal thread sleeve (15); the upper end of the internal thread sleeve (15) is rotatably connected with the longitudinal beam (4), the outer surface of the internal thread sleeve (15) is fixedly connected with an outer gear ring (11) which coaxially rotates, the lower surface of the internal thread sleeve is fixedly connected with a horizontally arranged hydraulic cylinder (17) through a mounting plate (18), the output end of the hydraulic cylinder (17) is fixedly connected with a toothed plate (16), and the toothed plate (16) and the outer gear ring (11) are meshed with each other; the rear suspension bracket mechanism (5) is connected with the lower surface of the longitudinal beam (4), the rear suspension bracket mechanism (5) comprises a telescopic rod (51), a second air spring (52) and a rear suspension bracket (53), the rear suspension bracket mechanism (5) is arranged below the longitudinal beam (4), the upper surface of the rear suspension bracket mechanism (5) is connected with one end of the telescopic rod (51) through the second air spring (52), and the other end of the telescopic rod (51) is fixedly connected with the longitudinal beam (4); the plate spring mechanism (3) is positioned between the front suspension bracket (14) and the rear suspension bracket (53), and the front suspension bracket (14) and the rear suspension bracket (53) are connected through the plate spring mechanism (3); one end of the movable pull rod mechanism (2) is connected with the front suspension bracket (14), and the other end of the movable pull rod mechanism (2) is connected with the plate spring mechanism (3); the oil receiving mechanism (6) is connected with the movable pull rod mechanism (2).

2. A semitrailer suspension arrangement according to claim 1, characterised in that the leaf spring mechanism (3) comprises a leaf spring (31), a stirrup (32) and a square tube bridge seat (33), one end of the leaf spring (31) being connected to the front suspension bracket (14), the other end of the leaf spring (31) being connected to the rear suspension bracket (53), and a square tube bridge seat (33) being provided above the leaf spring (31), the square tube bridge seat (33) being fixedly connected to the leaf spring (31) by means of the stirrup (32).

3. A semitrailer suspension arrangement according to claim 1, characterized in that the movable pull rod mechanism (2) comprises a connecting seat (21), a pull arm (22), a sleeve (23) and a lug (24), the front suspension bracket (14) is rotatably connected with the connecting seat (21), the connecting seat (21) is fixedly connected with the pull arm (22), the pull arm (22) is slidably connected in the sleeve (23), one end of the sleeve (23) far away from the connecting seat (21) is rotatably connected with the lug (24), and the lug (24) is fixedly connected with the outer surface of the square tube axle seat (33).

4. A semitrailer suspension arrangement according to claim 3, characterised in that the movable drawbar mechanism (2) further comprises a corrugated dust boot (25), the corrugated dust boot (25) is sleeved on the outer surface of the drawbar (22), one end of the corrugated dust boot (25) is sleeved on the connection seat (21), and the other end of the corrugated dust boot (25) is sleeved on the sleeve (23); connect oily mechanism (6) including connecing oil pan (61) and stand (62), the below of sleeve (23) is equipped with upper end open-ended and connects oil pan (61), connects oil pan (61) to be connected with sleeve (23) through stand (62).

5. The semitrailer suspension device according to claim 4, characterized in that the oil receiving mechanism (6) further comprises a T-shaped block (63) and a baffle plate (64), the T-shaped block (63) is fixedly connected to the outer surface of the oil receiving disc (61), the T-shaped block (63) is slidably connected into a T-shaped sliding groove formed in the side surface of the upright post (62), a damping rubber pad is fixedly connected into the T-shaped sliding groove, the outer surface of the upright post (62) is rotatably connected with the baffle plate (64) through a rotating shaft, and a damping rubber ring is fixedly connected between the rotating shaft and a corresponding mounting hole of the upright post (62); the front suspension support (14) and the rear suspension support (53) are provided with mounting grooves for mounting the plate spring (31).

Technical Field

The invention relates to the field of semitrailers, in particular to a semitrailer suspension device.

Background

A semitrailer is a trailer whose axle is positioned behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and which is equipped with a coupling device that transmits horizontal and vertical forces to the tractor.

Semitrailers are generally three-axle semitrailers, and the types of semitrailers are divided into eleven-meter-bin-column semitrailers, thirteen-meter-bin semitrailers, low-bed semitrailers and the like. Is a heavy transport vehicle connected with a semitrailer head through a towing pin. The semitrailer suspension device is an important component of a semitrailer, and when the semitrailer suspension device with longer length is used, the lengths of a front suspension bracket and a rear suspension bracket of the semitrailer suspension device cannot be adjusted, so that the height of a vehicle body cannot be adjusted, the semitrailer is easily restricted by the height limit of a road surface, and the semitrailer is not favorable for use of the semitrailer. Therefore, there is a need to provide a new suspension for semitrailers that solves the above mentioned problems.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a semitrailer suspension device.

The technical scheme adopted by the invention for solving the technical problems is as follows: a semitrailer suspension device comprises a longitudinal beam, a front suspension bracket mechanism, a rear suspension bracket mechanism, a plate spring mechanism, a movable pull rod mechanism and an oil receiving mechanism, wherein the front suspension bracket mechanism is connected with the lower surface of the longitudinal beam and comprises an outer gear ring, a threaded rod, a first air spring, a front suspension bracket, an inner threaded sleeve, a toothed plate, a hydraulic cylinder and a mounting plate; the upper end of the internal thread sleeve is rotatably connected with the longitudinal beam, the outer surface of the internal thread sleeve is fixedly connected with an external gear ring which coaxially rotates, the lower surface of the internal thread sleeve is fixedly connected with a hydraulic cylinder which is horizontally arranged through a mounting plate, the output end of the hydraulic cylinder is fixedly connected with a toothed plate, and the toothed plate and the external gear ring are mutually meshed; the rear suspension bracket mechanism is connected with the lower surface of the longitudinal beam and comprises a telescopic rod, a second air spring and a rear suspension bracket, the lower part of the longitudinal beam is provided with the rear suspension bracket mechanism, the upper surface of the rear suspension bracket mechanism is connected with one end of the telescopic rod through the second air spring, and the other end of the telescopic rod is fixedly connected with the longitudinal beam; the plate spring mechanism is positioned between the front suspension bracket and the rear suspension bracket, and the front suspension bracket and the rear suspension bracket are connected through the plate spring mechanism; one end of the movable pull rod mechanism is connected with the front suspension bracket, and the other end of the movable pull rod mechanism is connected with the plate spring mechanism; the oil receiving mechanism is connected with the movable pull rod mechanism.

Preferably, leaf spring mechanism includes leaf spring, stirrup and square tube bridge seat, the one end and the preceding suspension leg joint of leaf spring, the other end and the back suspension leg joint of leaf spring, and the top of leaf spring is equipped with square tube bridge seat, and square tube bridge seat passes through stirrup and leaf spring fixed connection.

Preferably, the movable pull rod mechanism comprises a connecting seat, a pull arm, a sleeve and a convex block, the front suspension support is rotatably connected with the connecting seat, the connecting seat is fixedly connected with the pull arm, the pull arm is slidably connected in the sleeve, one end, far away from the connecting seat, of the sleeve is rotatably connected with the convex block, and the convex block is fixedly connected with the outer surface of the square tube bridge seat.

Preferably, the movable pull rod mechanism further comprises a corrugated dustproof sleeve, the corrugated dustproof sleeve is sleeved on the outer surface of the pull arm, one end of the corrugated dustproof sleeve is sleeved on the connecting seat, and the other end of the corrugated dustproof sleeve is sleeved on the sleeve.

Preferably, the oil receiving mechanism comprises an oil receiving disc and a stand column, the oil receiving disc with an opening at the upper end is arranged below the sleeve, and the oil receiving disc is connected with the sleeve through the stand column.

Preferably, connect oily mechanism still includes T type piece and baffle, connect the outer fixed surface of food tray to be connected with T type piece, T type piece sliding connection is in the T type spout that the stand side was seted up, fixedly connected with damping rubber pad in the T type spout, and the surface of stand rotates the connection baffle through the pivot, and fixedly connected with damping rubber circle between the mounting hole that pivot and stand correspond, the mounting groove that is used for installing the leaf spring is all offered to preceding suspension support and back suspension support.

Compared with the prior art, the semitrailer suspension device provided by the invention has the following beneficial effects:

(1) according to the semitrailer suspension device, the distance between the longitudinal beam and the square-tube bridge seat can be adjusted through telescopic driving of the hydraulic cylinder, so that the height of the whole suspension system can be adjusted, the height of a semitrailer body can be adjusted, the requirement for height limitation on a road section can be met, and the practicability of the device can be improved; the first air spring and the second air spring play a role in buffering, and absorb, buffer and release vibration energy of a vehicle in the running process, so that the vibration energy borne by the plate spring is reduced, the amplitude of the plate spring is further reduced, and the probability of damage of the plate spring is reduced;

(2) according to the semitrailer suspension device provided by the invention, the pull arm and the sleeve have a balance return effect in the suspension device, and when the pull arm and the sleeve are lubricated, redundant lubricating oil can drop into the oil receiving disc, so that the pollution to the surrounding environment is avoided, the lubricating oil can be recycled into the oil receiving disc, and the lubricating oil can be reused after being reprocessed, so that the utilization rate of the lubricating oil is improved; and the oil receiving disc is convenient to disassemble, thereby being beneficial to the cleaning and the replacement of the oil receiving disc.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a semitrailer suspension arrangement provided by the present invention;

FIG. 2 is a schematic structural view of the front suspension bracket mechanism shown in FIG. 1;

FIG. 3 is an enlarged view of the structure shown in FIG. 1 at A;

fig. 4 is a schematic structural view of the oil receiving mechanism shown in fig. 1.

Reference numbers in the figures: 1. a front suspension support mechanism; 11. an outer ring gear; 12. a threaded rod; 13. a first air spring; 14. a front suspension bracket; 15. an internally threaded sleeve; 16. a toothed plate; 17. a hydraulic cylinder; 18. mounting a plate; 2. a movable pull rod mechanism; 21. a connecting seat; 22. pulling the arm; 23. a sleeve; 24. a bump; 25. a corrugated dust cover; 3. a leaf spring mechanism; 31. a plate spring; 32. hooping; 33. a square tube bridge seat; 4. a stringer; 5. a rear suspension support mechanism; 51. a telescopic rod; 52. a second air spring; 53. a rear suspension bracket; 6. an oil receiving mechanism; 61. an oil receiving pan; 62. a column; 63. a T-shaped block; 64. and a baffle plate.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, 2, 3 and 4, a semitrailer suspension device includes a longitudinal beam 4, a front suspension bracket mechanism 1, a rear suspension bracket mechanism 5, a movable pull rod mechanism 2 and an oil receiving mechanism 6, wherein the front suspension bracket mechanism 1 is connected with the lower surface of the longitudinal beam 4; the rear suspension bracket mechanism 5 is connected with the lower surface of the longitudinal beam 4; the plate spring mechanism 3 is positioned between the front suspension bracket 14 and the rear suspension bracket 53, and the front suspension bracket 14 and the rear suspension bracket 53 are connected through the plate spring mechanism 3; one end of the movable pull rod mechanism 2 is connected with the front suspension bracket 14, and the other end of the movable pull rod mechanism 2 is connected with the plate spring mechanism 3; the oil receiving mechanism 6 is connected with the movable pull rod mechanism 2.

In a specific implementation process, as shown in fig. 1 and 2, the front suspension bracket mechanism 1 includes an outer gear ring 11, a threaded rod 12, a first air spring 13, a front suspension bracket 14, an inner threaded sleeve 15, a toothed plate 16, a hydraulic cylinder 17 and a mounting plate 18, the front suspension bracket 14 is arranged below the longitudinal beam 4, the upper surface of the front suspension bracket 14 is connected with the threaded rod 12 through the first air spring 13, and the threaded rod 12 extends into the inner threaded sleeve 15 with an opening at the lower end and is in threaded connection with the inner threaded sleeve 15; the utility model discloses a hydraulic cylinder, including internal thread sleeve 15, longeron 4, the outer fixed surface of internal thread sleeve 15 is connected with the outer ring gear 11 of longeron 4 rotation, and the outer fixed surface of internal thread sleeve 15 is connected with coaxial pivoted, the lower surface pass through the pneumatic cylinder 17 that mounting panel 18 fixed connection has the level to set up, the output fixedly connected with pinion rack 16 of pneumatic cylinder 17, pinion rack 16 and outer ring gear 11 intermeshing.

Referring to fig. 1 and 3, the rear suspension bracket mechanism 5 includes a telescopic rod 51, a second air spring 52 and a rear suspension bracket 53, the rear suspension bracket mechanism 5 is disposed under the longitudinal beam 4, the upper surface of the rear suspension bracket mechanism 5 is connected to one end of the telescopic rod 51 through the second air spring 52, and the other end of the telescopic rod 51 is fixedly connected to the longitudinal beam 4. When in use: the first air spring 13 and the second air spring 52 play a role in buffering, absorb, buffer and release vibration energy of a vehicle in a running process, so that the vibration energy received by the plate spring 31 is reduced, the amplitude of the plate spring 31 is reduced, and the probability of damage to the plate spring 31 is reduced. The toothed plate 16 can drive the outer gear ring 11 and the inner thread sleeve 15 to rotate through the telescopic driving of the hydraulic cylinder 17, so that the length of the threaded rod 12 extending to the outside of the inner thread sleeve 15 can be adjusted, the length of the front longitudinal suspension support 14 can be adjusted, the height of the whole suspension system can be adjusted, the height of a semitrailer can be adjusted, the height limit on a road section can be met, the practicability of the device is improved, the telescopic rod 51 plays a limiting role, and the height of the longitudinal beam 4 can be adjusted more stably.

Referring to fig. 1, the plate spring mechanism 3 includes a plate spring 31, a stirrup 32 and a square tube bridge seat 33, one end of the plate spring 31 is connected to the front suspension bracket 14, the other end of the plate spring 31 is connected to the rear suspension bracket 53, the square tube bridge seat 33 is arranged above the plate spring 31, and the square tube bridge seat 33 is fixedly connected to the plate spring 31 through the stirrup 32. When in use: the square tube bridge seat 33 is internally connected with the bridge, and the plate spring 31 plays a role in buffering, so that the jolt of the semitrailer is reduced.

Referring to fig. 1 and 3, the movable pull rod mechanism 2 includes a connecting seat 21, a pull arm 22, a sleeve 23 and a protrusion 24, the front suspension bracket 14 is rotatably connected with the connecting seat 21, the connecting seat 21 is fixedly connected with the pull arm 22, the pull arm 22 is slidably connected in the sleeve 23, one end of the sleeve 23 far away from the connecting seat 21 is rotatably connected with the protrusion 24, and the protrusion 24 is fixedly connected with the outer surface of the square pipe bridge seat 33. When in use: the pull arm 22 is slidable within the sleeve 23 and the pull arm 22 and sleeve 23 act as a counter-return in the suspension.

Referring to fig. 3, the movable pull rod mechanism 2 further includes a corrugated dustproof sleeve 25, the corrugated dustproof sleeve 25 is sleeved on the outer surface of the pull arm 22, one end of the corrugated dustproof sleeve 25 is sleeved on the connecting seat 21, and the other end of the corrugated dustproof sleeve 25 is sleeved on the sleeve 23. When in use: the corrugated dustproof sleeve 25 plays a role in preventing dust, and the corrugated dustproof sleeve 25 can reduce the dust which obstructs the relative sliding of the pull arm 22 and the sleeve 23, so that the use reliability of the device is improved.

Referring to fig. 3 and 4, the oil receiving mechanism 6 includes an oil receiving pan 61 and a column 62, the oil receiving pan 61 with an open upper end is disposed below the sleeve 23, and the oil receiving pan 61 is connected to the sleeve 23 through the column 62. When in use: when lubricating arm 22 and sleeve 23, unnecessary lubricating oil can drip in connecing food tray 61 to avoid the pollution to the surrounding environment, and lubricating oil can be retrieved in connecing food tray 61, through the reprocessing back, lubricating oil can reuse, thereby improves lubricating oil's utilization ratio.

Referring to fig. 4, the oil receiving mechanism 6 further includes a T-shaped block 63 and a baffle 64, the T-shaped block 63 is fixedly connected to the outer surface of the oil receiving tray 61, the T-shaped block 63 is slidably connected to a T-shaped chute formed in the side surface of the upright column 62, a damping rubber pad is fixedly connected to the T-shaped chute, the baffle 64 is rotatably connected to the outer surface of the upright column 62 through a rotating shaft, and a damping rubber ring is fixedly connected between the rotating shaft and a corresponding mounting hole of the upright column 62. T type piece 63 inserts and establishes in the T type spout that stand 62 side was seted up, and can be to blockking T type piece 63 through baffle 64, avoid T type piece 63 roll-off in from T type spout, and baffle 64 can carry out the damping rotation, make baffle 64 no longer block T type piece 63 through rotating baffle 64, T type piece 63 can follow T type spout interior roll-off, thereby be favorable to connecing the dismantlement of food tray 61, and then be favorable to connecing the clearance and the change of food tray 61, the mounting groove that is used for installing leaf spring 31 is all offered to preceding suspension bracket 14 and back suspension bracket 53. When in use, the installation of the plate spring 31 is more stable and firm through the installation groove.

The working principle of the semitrailer suspension device provided by the invention is as follows: when the invention is used, the first air spring 13 and the second air spring 52 play a role of buffering, and absorb, buffer and release the vibration energy of the vehicle in the running process, so that the vibration energy borne by the plate spring 31 is reduced, the amplitude of the plate spring 31 is further reduced, and the probability of damage to the plate spring 31 is reduced; and can make the pinion rack 16 drive outer ring gear 11 and internal thread sleeve 15 through the flexible drive of pneumatic cylinder 17 and rotate, thereby make threaded rod 12 extend to the outside length of internal thread sleeve 15 and can adjust, thereby the length of preceding suspension support 14 can be adjusted, make whole suspension system's height can be adjusted, thereby make the automobile body height of semitrailer adjust, be favorable to satisfying the limit for height on the highway section, the practicality of high installation, single arm-drag 22 and sleeve 23 play the effect of balanced return in linkage simultaneously, when lubricating single arm-drag 22 and sleeve 23, unnecessary lubricating oil can drip in connecing food tray 61, thereby avoid the pollution to the surrounding environment, and in lubricating oil can retrieve food tray 61, through the reprocessing back, lubricating oil can reuse, thereby improve the utilization ratio of lubricating oil.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.