CN114439811B - Hydraulic cylinder for truck cab - Google Patents
Hydraulic cylinder for truck cab Download PDFInfo
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- CN114439811B CN114439811B CN202210098110.0A CN202210098110A CN114439811B CN 114439811 B CN114439811 B CN 114439811B CN 202210098110 A CN202210098110 A CN 202210098110A CN 114439811 B CN114439811 B CN 114439811B
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- Prior art keywords
- hydraulic cylinder
- groove
- piston
- piston rod
- connecting rod
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/067—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/073—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other characterised by special adaptations of vehicle control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
Abstract
The invention relates to a hydraulic cylinder for a truck cab, which comprises a cylinder body, a connecting lug seat and a connecting trunnion, wherein the cylinder body is of a cylindrical structure, the left end of the cylinder body is provided with the connecting lug seat through a screw, the right end of the cylinder body is detachably provided with the connecting trunnion, and the middle parts of the connecting lug seat and the connecting trunnion are respectively provided with a mounting hole. The hydraulic oil cylinder can solve the problems that the overload protection effect cannot be realized usually when the existing hydraulic oil cylinder is used, when an oil pipe bursts due to large bearing capacity, the hydraulic oil cylinder drives a truck headstock to instantly fall, a maintainer below the headstock is prone to have large potential safety hazards, meanwhile, when the existing hydraulic oil cylinder is used, the piston rod is stressed unevenly and is prone to eccentric phenomenon, the sealing ring on the outer side of the piston rod is severely worn, the hydraulic oil cylinder is prone to oil leakage phenomenon and the like.
Description
Technical Field
The invention relates to the field of hydraulic cylinders, in particular to a hydraulic cylinder for a truck cab.
Background
The middle and heavy truck has several parts below the cab, and has cylinder connected between the cab and the chassis for easy maintenance, so that the cab may be turned over for easy maintenance.
Currently, the existing hydraulic cylinders for truck cabs generally have the following defects when in use: 1. when the existing hydraulic oil cylinder is used, overload protection can not be realized, and when an oil pipe bursts due to high bearing capacity, the hydraulic oil cylinder drives a truck head to instantly fall, and a maintainer below the truck head is prone to having great potential safety hazard; 2. when the existing hydraulic oil cylinder is used, the eccentric phenomenon is easy to occur due to uneven stress on the piston rod, so that the abrasion of the sealing ring on the outer side of the piston rod is serious, and the oil leakage phenomenon of the hydraulic oil cylinder occurs.
Disclosure of Invention
First, the technical problem to be solved
The hydraulic oil cylinder can solve the problems that the overload protection effect cannot be realized usually when the existing hydraulic oil cylinder is used, when an oil pipe bursts due to large bearing capacity, the hydraulic oil cylinder drives a truck headstock to instantly fall, a maintainer below the headstock is prone to have large potential safety hazards, meanwhile, when the existing hydraulic oil cylinder is used, the piston rod is stressed unevenly and is prone to eccentric phenomenon, the sealing ring on the outer side of the piston rod is severely worn, the hydraulic oil cylinder is prone to oil leakage phenomenon and the like.
(II) technical scheme
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a hydraulic cylinder for truck driver's cabin, includes hydro-cylinder body, engaging lug seat and connection trunnion, the hydro-cylinder body be cylindrical structure, the hydro-cylinder body left end is through the bolt installation engaging lug seat, the connection trunnion is installed to hydro-cylinder body right-hand member detachable, engaging lug seat and connection trunnion middle part all are provided with the mounting hole, engaging lug seat and connection trunnion carry out fixed mounting through the mounting hole for engaging lug seat and connection trunnion can be connected with the truck driver's cabin.
The cylinder body include at the bottom of the pneumatic cylinder, pneumatic cylinder cap, piston rod, protection element and seal frame, the pneumatic cylinder be cylindrical hollow structure, pneumatic cylinder both ends are installed at the pneumatic cylinder end and pneumatic cylinder cap respectively through the screw, the pneumatic cylinder cap middle part is provided with the through-hole, through-hole mid-mounting has the seal frame, the inside piston rod that is connected with through sealing fit's mode of seal frame, the piston rod inboard is connected with the inside of pneumatic cylinder through sealing fit's mode, the piston rod middle part is provided with the spout, protection element is located the spout inside, protection element one end is connected with the spout through sliding fit's mode, the protection element other end passes through the screw and installs at the bottom of the pneumatic cylinder inside.
The protection unit include mount pad, reference column, piston head, chucking mechanism and locking plate, the mount pad pass through the screw and install inside the hydraulic cylinder bottom, the reference column is installed on the mount pad right side, the reference column right-hand member is provided with the piston head, the piston head is connected with the spout through sliding fit's mode, evenly be provided with the spread groove on the reference column, install chucking mechanism in the spread groove, the locking plate is evenly installed to the spout inside, locking plate and chucking mechanism cooperate.
The clamping mechanism comprises a piston plate, a partition plate, a connecting rod, a telescopic spring, a connecting rod, a clamping plate and an elastic pad, wherein the connecting groove comprises a through groove a1, a limiting groove a2 and a liquid inlet hole a3, the liquid inlet hole a3 is of an inclined structure, the liquid inlet hole a3 is communicated with the right end of the through groove a1, the partition plate is fixedly arranged in the middle of the through groove a1, the connecting rod is connected in a sliding fit mode, the telescopic spring is arranged on the connecting rod, the piston plate is arranged on the left side of the connecting rod, the piston plate is connected with the connecting groove in a sliding fit mode, the connecting rod is uniformly provided with the connecting rod through a pin roll, the connecting rod is connected with the clamping plate through the pin roll, the clamping plate is located in a limiting groove a2, the clamping plate is provided with a torsion spring in a connecting position of the limiting groove a2 through the pin roll, and the outer side of the clamping plate is tightly attached to the inner side of the elastic pad.
The elastic pad adopts wear-resisting material, avoids the phenomenon that takes place to damage when elastic pad atress, and the elastic pad can play sealed effect simultaneously, prevents that hydraulic oil from getting into inside the logical groove a 1.
As a preferable technical scheme of the invention, the piston rod comprises a fixed shaft, a piston plate and a threaded rod, wherein the fixed shaft is connected with the sealing frame in a sliding fit mode, the piston plate is arranged on the inner side of the fixed shaft, a sealing ring is uniformly arranged on the piston plate, a sliding groove is arranged in the fixed shaft, the threaded rod is arranged on the outer side of the fixed shaft, an external thread is arranged at the outer end of the threaded rod, and the threaded rod is connected with a connecting trunnion in a threaded fit mode.
As a preferable technical scheme of the invention, the hydraulic cylinder bottom and the hydraulic cylinder cover are respectively provided with a liquid inlet groove b1, the liquid inlet groove is communicated with the inside of the hydraulic cylinder barrel, a liquid inlet flange is fixedly arranged on the liquid inlet groove, the liquid inlet flange is connected with an external oil pipe, and the function of adjusting the piston rod is realized through the pressure change of hydraulic oil.
As a preferable technical scheme of the invention, pouring ports are respectively arranged on the bottom of the hydraulic cylinder and the outer side face of the hydraulic cylinder cover, pouring grooves are arranged on the hydraulic cylinder barrel, and anti-skid patterns are uniformly arranged on the inner side face of the pouring grooves.
As a preferable technical scheme of the invention, annular grooves are uniformly formed in the middle of the sealing frame, and dust-proof rings are uniformly arranged in the annular grooves and can prevent impurities such as dust, sand and the like from being brought into the oil cylinder.
As a preferable technical scheme of the invention, the locking plate is of an L-shaped structure, clamping grooves are uniformly formed in the locking plate, the cross section of each clamping groove is of a trapezoid structure, positioning columns are uniformly arranged on the rear side face of the locking plate, positioning holes matched with the positioning columns are uniformly formed in the piston rods, the locking plate is detachably connected with the piston rods, and the positioning columns are clamped and matched with the positioning holes, so that the bearing effect of the locking plate can be improved, and the falling phenomenon of the locking plate due to stress is avoided.
As a preferable technical scheme of the invention, the piston head is in sealing fit with the sliding groove in the middle of the piston rod, and the diameter of the positioning column is smaller than the inner diameter of the sliding groove, so that hydraulic oil can enter a gap between the positioning column and the sliding groove, the hydraulic oil can be ensured to be accurately filled outside the clamping mechanism, and the internal and external oil pressure of the clamping mechanism is kept balanced.
(III) beneficial effects
1. According to the hydraulic cylinder for the truck cab, the protection unit can effectively play a limiting role, so that the piston rod can only move up and down when moving, the phenomenon that the piston rod is eccentric is prevented, the phenomenon that the sealing ring on the outer side of the piston rod is worn is avoided, and the use effect of the hydraulic cylinder is improved;
2. according to the hydraulic cylinder for the truck cab, the clamping mechanism can play a role in overload protection, when the pressure of hydraulic oil in the hydraulic cylinder barrel is instantaneously reduced when the piston rod exceeds a limiting load to burst an oil pipe during use, the clamping mechanism 154 is outwards expanded due to the change of the oil pressure, so that the clamping mechanism can be quickly clamped with the locking plate, further the effect of supporting and protecting the piston rod can be realized, the piston rod is prevented from driving the truck cab to instantaneously fall, and the potential safety hazard existing during use of maintenance personnel is reduced.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the present invention;
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 at A-A in accordance with the present invention;
FIG. 4 is a schematic cross-sectional view of the cylinder bottom of the present invention;
FIG. 5 is a schematic cross-sectional view of the cylinder body of the present invention;
FIG. 6 is a schematic cross-sectional view of the present invention between a piston rod and a locking plate;
FIG. 7 is a schematic cross-sectional view of a locking plate of the present invention;
FIG. 8 is a schematic cross-sectional view of a protection unit of the present invention;
fig. 9 is an enlarged schematic view of the structure of the present invention at M in fig. 8.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
As shown in fig. 1 to 9, a hydraulic cylinder for a truck cab comprises a cylinder body 1, a connecting lug seat 2 and a connecting lug 3, wherein the cylinder body 1 is of a cylindrical structure, the connecting lug seat 2 is installed at the left end of the cylinder body 1 through a screw, the connecting lug 3 is installed at the right end of the cylinder body 1 in a detachable manner, mounting holes are formed in the middle parts of the connecting lug seat 2 and the connecting lug 3, and the connecting lug seat 2 and the connecting lug 3 are fixedly installed through the mounting holes, so that the connecting lug seat 2 and the connecting lug 3 can be connected with the truck cab.
The oil cylinder body 1 include at the bottom of the pneumatic cylinder 11, the pneumatic cylinder 12, the pneumatic cylinder 13, piston rod 14, protection element 15 and seal frame 16, the pneumatic cylinder 12 be cylindrical hollow structure, the pneumatic cylinder 12 both ends pass through the screw and install at the bottom of the pneumatic cylinder 11 and pneumatic cylinder 13 respectively, the pneumatic cylinder 13 middle part is provided with the through-hole, through-hole mid-mounting has seal frame 16, the inside piston rod 14 that is connected with through sealing fit's mode of seal frame 16, the piston rod 14 inboard is connected with the inside of the pneumatic cylinder 12 through sealing fit's mode, the piston rod 14 middle part is provided with the spout, protection element 15 is located the spout inside, protection element 15 one end is connected with the spout through sliding fit's mode, the protection element 15 other end passes through the screw and installs at the inside of the pneumatic cylinder bottom 11, during specific work, drive piston rod 14 up-and-down motion through control hydraulic oil for piston rod 14 can be adjusted, seal frame 16 can play sealed effect, prevent external dust, impurity get into the inside of pneumatic cylinder 12, protection element 15 can play overload protection's effect, when the limit load leads to the oil pipe burst when the use is exceeded, protection element 15 can support 14 inside, prevent that the falling down of piston rod 14, the phenomenon of falling down in the moment, the safety phenomenon of causing the piston rod 14 to fall down.
The hydraulic cylinder bottom 11 and the hydraulic cylinder cover 13 are respectively provided with a liquid inlet groove b1, the liquid inlet grooves are communicated with the inside of the hydraulic cylinder barrel 12, liquid inlet flanges are fixedly arranged on the liquid inlet grooves and connected with an external oil pipe, and the function of adjusting the piston rod 14 is realized through pressure change of hydraulic oil.
The utility model provides a molten iron pouring device, including cylinder bottom 11 and cylinder 13, cylinder 13 lateral surface on be provided with pouring gate 101 respectively, be provided with on the cylinder 12 and pour groove 102, evenly be provided with anti-skidding line on pouring groove 102 medial surface, during concrete work, when cylinder bottom 11 and cylinder 13 are connected with cylinder 12 respectively, flow into pouring groove 102 inside through pouring gate 101 with molten iron after melting, after the molten iron cooling, the molten iron can realize effectively that cylinder bottom 11 and cylinder 13 are sealed with cylinder 12 respectively, avoids taking place the phenomenon of gas leakage, the connecting effect between the molten iron that anti-skidding line can further increase and pour simultaneously.
The piston rod 14 include fixed axle 141, piston plate 142 and threaded rod 143, fixed axle 141 be connected with seal frame 16 through sliding fit's mode, the piston plate 142 is installed to the fixed axle 141 inboard, evenly be provided with the sealing washer on the piston plate 142, the inside spout that is provided with of fixed axle 141, threaded rod 143 is installed in the fixed axle 141 outside, threaded rod 143 outer end is provided with the external screw thread, threaded rod 143 is connected with through the mode of screw-thread fit and connects trunnion 3, during the concrete work, the sealing washer in the piston plate 142 outside can play sealed effect effectively, avoid taking place the phenomenon of oil leak, guarantee the accuracy of fixed axle 141 motion transmission, threaded rod 143 can be connected with connecting trunnion 3, the installation of being convenient for is fixed.
The piston rod 14 is made of 35, 45, 40Cr steel materials, and the like, and after rough machining and thermal refining, the hardness can reach 230-285HBS, but the wear resistance is poor, high-frequency quenching is needed, and if necessary, the outer surface of the piston rod is also needed to be plated with chromium, and the chromium plating layer is polished.
The protection unit 15 include mount pad 151, reference column 152, piston head 153, chucking mechanism 154 and locking plate 155, the mount pad 151 pass through the screw and install inside the cylinder bottom 11, the reference column 152 is installed on the mount pad 151 right side, the reference column 152 right-hand member is provided with piston head 153, piston head 153 is connected with the spout through sliding fit's mode, evenly be provided with the spread groove on the reference column 152, install chucking mechanism 154 in the spread groove, the locking plate 155 is evenly installed to spout inside, locking plate 155 cooperatees with chucking mechanism 154, during specific work, the reference column 152 passes through piston head 153 and the inside spout sliding connection of piston rod 14, the reference column 152 can play spacing effect, the eccentric phenomenon takes place when preventing piston rod 14 motion, guarantee the life of sealing washer on the piston rod 14, when oil pipe takes place to burst, chucking mechanism 154 receives the change of oil pressure and outwards expands, make the effect that piston rod 14 can be fast with locking plate 155 joint, and then can realize supporting protection to piston rod 14, prevent that piston rod 14 from falling in the twinkling of an eye.
The clamping mechanisms 154 are provided with a plurality of groups, and when the piston rod 14 falls, the clamping mechanisms 154 can simultaneously realize the clamping function with the locking plate 155, so that the piston rod 14 can be effectively prevented from falling.
The piston head 153 is in sealing fit with the sliding groove in the middle of the piston rod 14, and the diameter of the positioning column 152 is smaller than the inner diameter of the sliding groove, so that hydraulic oil can enter a gap between the positioning column 152 and the sliding groove, and the hydraulic oil can be ensured to be accurately filled outside the clamping mechanism 154, so that the internal and external oil pressure of the clamping mechanism 154 is kept balanced.
The clamping mechanism 154 comprises a piston plate 1541, a baffle plate 1542, a connecting rod 1543, a telescopic spring 1544, a connecting rod 1545, a clamping plate 1546 and an elastic pad 1547, wherein the connecting groove comprises a through groove a1, a limiting groove a2 and a liquid inlet hole a3, the liquid inlet hole a3 is in an inclined structure, the liquid inlet hole a3 is communicated with the right end of the through groove a1, the baffle plate 1542 is fixedly arranged in the middle of the through groove a1, the connecting rod 1543 is connected with the baffle plate 1542 in a sliding fit manner, the telescopic spring 1544 is arranged on the connecting rod 1543, the piston plate 1541 is arranged on the left side of the connecting rod 1543, the piston plate 1541 is connected with the connecting groove in a sliding fit manner, the connecting rod 1545 is uniformly arranged on the right side of the connecting rod 1543 through a pin shaft, the connecting rod 1545 is connected with the clamping plate 1546 through the pin shaft, the clamping plate 1546 is positioned in the limiting groove a2, the clamping plate 1546 is arranged in the limiting groove a2 through the pin shaft, the clamping plate 1546 is provided with the torsional spring with limit groove a2 junction, clamping plate 1546 is trapezoidal structure, limit groove a2 outside is provided with elastic pad 1547, clamping plate 1546 outside is hugged closely with elastic pad 1547 inboard, during the concrete work, when inside hydraulic oil of hydraulic cylinder 12 is in steady state, hydraulic oil gets into through groove a1 inside through feed liquor hole a3 for hydraulic oil passes through piston plate 1541 and drives connecting rod 1543 upward movement, make connecting rod 1543 pass through connecting rod 1545 and drive clamping plate 1546 shrink inside limit groove a2, when the inside pressure of hydraulic cylinder 12 takes place to change in the twinkling of an eye, extension spring 1544 drives piston plate 1541 outward movement, make clamping plate 1546 outwards rotate, when piston rod 14 falls down, clamping plate 1546 can be fast with locking plate 155 joint cooperation, avoid the unexpected event emergence that piston rod 14 falls to lead to.
The locking plate 155 be L type structure, evenly be provided with draw-in groove 1551 on the locking plate 155, draw-in groove 1551 cross-section is trapezium structure, evenly be provided with reference column 1552 on the locking plate 155 trailing flank, evenly be provided with on the piston rod 14 with reference column 1552 complex locating hole, during the concrete work, when the inside and outside oil pressure of chucking mechanism 154 keeps balanced, chucking mechanism 154 does not joint with draw-in groove 1551, when hydraulic oil pressure reduces in the twinkling of an eye, chucking mechanism 154 outwards expands and then with draw-in groove 1551 looks joint, and then can realize supporting the effect to piston rod 14, prevents that piston rod 14 from taking place the phenomenon of falling.
The middle part of the sealing frame 16 is uniformly provided with annular grooves, dust-proof rings are uniformly arranged in the annular grooves, the dust-proof rings can prevent impurities such as dust and sand from adhering to an oil film on the surface of the piston rod, the impurities such as dust and sand are prevented from being brought into the oil cylinder, and the phenomenon of medium leakage caused by scratch on the surface of the piston rod is avoided.
The invention comprises the following steps:
s1, installing a hydraulic cylinder: the connecting lug seat 2 and the connecting trunnion 3 are fixedly installed through the installation holes, so that the connecting lug seat 2 and the connecting trunnion 3 can be connected with a truck cab;
s2, working of a hydraulic cylinder: the liquid inlet flange is connected with an external oil pipe, and the function of adjusting the piston rod 14 is realized according to the pressure change of hydraulic oil;
s3, overload protection: when the piston rod 14 exceeds a limiting load to cause bursting of an oil pipe during use, the internal pressure of the hydraulic cylinder barrel 12 is changed instantaneously, the telescopic spring 1544 drives the piston plate 1541 to move outwards, the clamping plate 1546 rotates outwards, when the piston rod 14 falls downwards, the clamping plate 1546 can be rapidly clamped and matched with the locking plate 155, unexpected events caused by falling of the piston rod 14 are avoided, the phenomenon that a headstock falls due to instantaneous falling of the piston rod 14 is prevented, and the use safety is improved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a hydraulic cylinder for truck driver's cabin, includes hydro-cylinder body (1), engaging lug seat (2) and connection trunnion (3), its characterized in that: the hydro-cylinder body (1) be cylindrical structure, hydro-cylinder body (1) left end is installed engaging lug seat (2) through the screw, hydro-cylinder body (1) right-hand member detachable installs and connects trunnion (3), all is provided with the mounting hole in engaging lug seat (2) and connecting trunnion (3) middle part, wherein:
the oil cylinder body (1) comprises a hydraulic cylinder bottom (11), a hydraulic cylinder barrel (12), a hydraulic cylinder cover (13), a piston rod (14), a protection unit (15) and a sealing frame (16), wherein the hydraulic cylinder barrel (12) is of a cylindrical hollow structure, the hydraulic cylinder bottom (11) and the hydraulic cylinder cover (13) are respectively installed at two ends of the hydraulic cylinder barrel (12) through screws, a through hole is formed in the middle of the hydraulic cylinder cover (13), the sealing frame (16) is installed in the middle of the through hole, the piston rod (14) is connected in a sealing fit mode in the sealing frame (16), the inner side of the piston rod (14) is connected with the inner side of the hydraulic cylinder barrel (12) in a sealing fit mode, a chute is formed in the middle of the piston rod (14), the protection unit (15) is located in the chute, one end of the protection unit (15) is connected with the chute in a sliding fit mode, and the other end of the protection unit (15) is installed in the hydraulic cylinder bottom (11) through screws.
The protection unit (15) comprises a mounting seat (151), a positioning column (152), a piston head (153), a clamping mechanism (154) and a locking plate (155), wherein the mounting seat (151) is arranged in the bottom (11) of the hydraulic cylinder through a screw, the positioning column (152) is arranged on the right side of the mounting seat (151), the piston head (153) is arranged at the right end of the positioning column (152), the piston head (153) is connected with a sliding chute in a sliding fit mode, a connecting groove is uniformly formed in the positioning column (152), the clamping mechanism (154) is arranged in the connecting groove, the locking plate (155) is uniformly arranged in the sliding chute, and the locking plate (155) is matched with the clamping mechanism (154);
the clamping mechanism (154) include piston plate (1541), baffle (1542), connecting rod (1543), telescopic spring (1544), connecting rod (1545), clamping plate (1546) and elastic cushion (1547), the spread groove include logical groove a1, spacing groove a2 and feed liquor hole a3, feed liquor hole a3 is the slope structure, feed liquor hole a3 is linked together with logical groove a1 right-hand member, logical groove a1 mid-mounting has baffle (1542), be connected with connecting rod (1543) through sliding fit's mode on baffle (1542), be provided with telescopic spring (1544) on connecting rod (1543), connecting rod (1543) installs connecting rod (1541) in the left side, connecting rod (1543) are connected with the spread groove through sliding fit's mode, connecting rod (1545) are evenly installed on connecting rod (1543) right side through the round pin axle, connecting rod (1545) are connected with limiting groove a3, clamping plate (1546) are located limiting groove a2 through round pin axle installation at limiting groove a2, clamping plate (1546) are equipped with piston plate (1546) outside trapezium (1546), piston plate (1546) are equipped with elastic cushion (1547), piston plate (1546) are hugged closely outside structure.
2. The hydraulic ram for a truck cab of claim 1, wherein: the piston rod (14) include fixed axle (141), piston board (142) and threaded rod (143), fixed axle (141) be connected with sealed frame (16) through sliding fit's mode, piston board (142) are installed to fixed axle (141) inboard, evenly be provided with the sealing washer on piston board (142), fixed axle (141) inside is provided with the spout, threaded rod (143) are installed in fixed axle (141) outside, threaded rod (143) outer end is provided with the external screw thread, threaded rod (143) are connected with through screw fit's mode and connect trunnion (3).
3. The hydraulic ram for a truck cab of claim 1, wherein: the hydraulic cylinder bottom (11) and the hydraulic cylinder cover (13) are respectively provided with a liquid inlet groove b1, the liquid inlet groove is communicated with the inside of the hydraulic cylinder barrel (12), and a liquid inlet flange is fixedly arranged on the liquid inlet groove.
4. The hydraulic ram for a truck cab of claim 1, wherein: the hydraulic cylinder bottom (11) and the hydraulic cylinder cover (13) are respectively provided with a pouring opening (101) on the outer side face, the hydraulic cylinder barrel (12) is provided with a pouring groove (102), and anti-skidding lines are uniformly arranged on the inner side face of the pouring groove (102).
5. The hydraulic ram for a truck cab of claim 1, wherein: annular grooves are uniformly formed in the middle of the sealing frame (16), and dust-proof rings are uniformly arranged in the annular grooves.
6. The hydraulic ram for a truck cab of claim 1, wherein: the locking plate (155) is of an L-shaped structure, clamping grooves (1551) are uniformly formed in the locking plate (155), the cross section of each clamping groove (1551) is of a trapezoid structure, positioning columns (1552) are uniformly arranged on the rear side face of the locking plate (155), and positioning holes matched with the positioning columns (1552) are uniformly formed in the piston rod (14).
7. The hydraulic ram for a truck cab of claim 1, wherein: the piston head (153) is in sealing fit with a sliding groove in the middle of the piston rod (14), and the diameter of the positioning column (152) is smaller than the inner diameter of the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210098110.0A CN114439811B (en) | 2022-01-27 | 2022-01-27 | Hydraulic cylinder for truck cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210098110.0A CN114439811B (en) | 2022-01-27 | 2022-01-27 | Hydraulic cylinder for truck cab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114439811A CN114439811A (en) | 2022-05-06 |
| CN114439811B true CN114439811B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210098110.0A Active CN114439811B (en) | 2022-01-27 | 2022-01-27 | Hydraulic cylinder for truck cab |
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| CN (1) | CN114439811B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116079786B (en) * | 2023-03-28 | 2023-06-13 | 北京工业大学 | Super-redundancy folding type space mechanical arm driving system |
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| CN212928370U (en) * | 2020-08-11 | 2021-04-09 | 科玛（中国）液压设备有限公司 | Hydraulic oil cylinder for truck |
| CN113606218A (en) * | 2021-08-13 | 2021-11-05 | 安徽德鸿机件制造有限公司 | Truck cab hydraulic oil cylinder |
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2022
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| KR20030052592A (en) * | 2001-12-21 | 2003-06-27 | 현대자동차주식회사 | Truck cap tilting unit |
| WO2017012112A1 (en) * | 2015-07-23 | 2017-01-26 | 童欣 | Oil damper for train |
| WO2018086019A1 (en) * | 2016-11-10 | 2018-05-17 | 宁波一力减震器有限公司 | Electrically-controlled compression-type gas spring |
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| CN212928370U (en) * | 2020-08-11 | 2021-04-09 | 科玛（中国）液压设备有限公司 | Hydraulic oil cylinder for truck |
| CN113606218A (en) * | 2021-08-13 | 2021-11-05 | 安徽德鸿机件制造有限公司 | Truck cab hydraulic oil cylinder |
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| Publication number | Publication date |
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| CN114439811A (en) | 2022-05-06 |
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