CN220791638U - Bidirectional hydraulic cylinder - Google Patents

Abstract

The utility model provides a bidirectional hydraulic cylinder, comprising: the hydraulic cylinder body comprises a cylinder body and a piston rod which movably penetrates through the top of the cylinder body, a fixed plate is fixed at the bottom of the cylinder body, a connecting plate is fixed at one end of the piston rod which penetrates through the cylinder body, and a first oil pipe and a second oil pipe which are communicated with the inside of the cylinder body are arranged on the cylinder body; the fixed block is fixedly arranged on the side wall of the cylinder body, and a through groove is formed in the fixed block. According to the hydraulic cylinder, the design of the connecting rod and the locking mechanism is utilized, when the hydraulic cylinder body is used, the platform of the lifting equipment is lifted, the locking mechanism can be utilized to lock the fixing block and the connecting rod, the position of the connecting plate is locked, the platform of the lifting equipment is supported, the situation that the oil seal at the joint of the piston rod and the cylinder body is damaged due to the fact that the platform applies a downward pressing acting force to the piston rod is avoided, hydraulic oil seeps out through the joint of the piston rod and the cylinder body is avoided, and therefore the service life of the hydraulic cylinder body is prolonged.

Description

Bidirectional hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic oil cylinder equipment, in particular to a bidirectional hydraulic oil cylinder.

Background

Hydraulic rams are a common type of hydraulic component used to convert fluid energy into mechanical energy. It is mainly composed of cylinder body, piston, sealing device and inlet and outlet pipelines. The hydraulic cylinder works on the principle that the pressure of the liquid in the container is utilized to transfer force. When liquid is pumped into the cylinder, it pushes the piston into the cylinder. The double-acting cylinder means that the piston can push out and pull back against the load force in both directions by the pressure oil on both sides. In short, the two cavities are filled with oil, and the movement in two directions is driven by oil pressure.

The traditional hydraulic oil cylinder only completes an independent telescopic function, the locking of the oil cylinder needs to be controlled in a hydraulic system, and as the hydraulic system is connected with the oil cylinder through a pipeline, a downward pressing acting force is applied to a piston rod under the action of the gravity of a platform of lifting equipment, the situation that the hydraulic pipeline is broken easily occurs, the oil cylinder cannot be locked automatically, equipment is damaged, the lifting platform falls down, and even casualties are caused when the influence is serious; therefore, the traditional hydraulic oil cylinder cannot meet the current industrial requirements more and more, and the safety of equipment and personnel cannot be ensured; for this reason, some hydraulic cylinders appear on the market, be provided with locking mechanism cooperation in hydraulic cylinder and use, reduce the functional requirement to hydraulic system, improve hydraulic cylinder's security, for example:

In the prior art with the authorized bulletin number of CN211202505U, a bidirectional locking hydraulic cylinder is disclosed, and comprises a cylinder body and a hydraulic rod, wherein the two ends of the cylinder body are respectively provided with a front cavity and a rear cavity, and the hydraulic rod extends from the rear cavity to the front cavity and reciprocates in the cylinder body; the front cavity and the rear cavity are simultaneously communicated with an oil path block, and the telescopic function of the hydraulic oil cylinder and the locking device are combined into a whole, so that the functional requirement on a hydraulic system is reduced, the safety of the hydraulic oil cylinder is improved, the damage to the hydraulic oil cylinder and the threat to personnel in the using process of equipment are reduced, and the bidirectional locking effect can be realized when an oil pipe is broken;

however, in the actual process, the bidirectional locking hydraulic cylinder in the prior art has the following defects:

The hydraulic cylinder is locked in two directions through the locking device, so that the situation that a hydraulic pipeline is broken when a downward pressing acting force is applied to a piston rod under the action of gravity of a platform of lifting equipment is avoided, but when the downward pressing acting force is applied to the piston rod under the action of gravity of the platform of the lifting equipment, an oil seal at the joint of the piston rod and a cylinder body is easily damaged, hydraulic oil seeps out from the joint of the piston rod and the cylinder body, and the normal use condition of the hydraulic cylinder is influenced;

therefore, the application provides a bidirectional hydraulic cylinder.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a bidirectional hydraulic cylinder, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a dual acting hydraulic ram comprising:

The hydraulic cylinder body comprises a cylinder body and a piston rod which movably penetrates through the top of the cylinder body, a fixed plate is fixed at the bottom of the cylinder body, a connecting plate is fixed at one end of the piston rod which penetrates through the cylinder body, and a first oil pipe and a second oil pipe which are communicated with the inside of the cylinder body are arranged on the cylinder body;

The fixed block is fixedly arranged on the side wall of the cylinder body, a through groove is formed in the fixed block, a connecting rod capable of movably penetrating through the through groove is fixedly arranged at the bottom of the connecting plate, the fixed block is provided with a mounting block, and the mounting block is provided with a locking mechanism acting on the connecting rod and used for locking or unlocking the fixed block and the connecting rod.

Further: the locking mechanism comprises a guide rod which is in the horizontal direction and fixedly arranged on a mounting block, a contact rod is slidably arranged on the guide rod in the horizontal direction, and a driving piece which acts on the contact rod is arranged on the mounting block and is used for enabling the contact rod to slide along the guide rod or stop sliding.

Further: the driving piece comprises a driving rod rotatably arranged on the mounting block, the driving rod is in threaded connection with the abutting rod, and the mounting block is fixedly provided with a motor connected with the abutting rod.

Further: and a rubber pad is fixed at one end of the abutting rod, which is close to the connecting rod.

Further: the installation piece is including installing the bottom block at the fixed block top, and the connecting rod activity runs through the bottom block, and the outside bearing of bottom block installs the cover and establishes the outside dwang at the connecting rod, has set firmly the guide post that is the horizontal direction on the dwang, the guide post outside and along its axis direction has seted up the helicla flute, and the guide post tip extends to in the helicla flute and with helicla flute sliding connection, supports contact rod, rubber pad all movable sleeve and establishes outside the guide post.

Further: the ball is installed to the guide post tip, and the ball is laminated with the helicla flute inside mutually.

Further: the bottom block is fixedly arranged on the fixed block through screws.

The utility model provides a bidirectional hydraulic cylinder. Compared with the prior art, the method has the following beneficial effects:

Utilize connecting rod and locking mechanical system's design, when hydraulic cylinder body use, promote when lifting equipment's platform, utilize locking mechanical system can realize locking between fixed block and the connecting rod, realize locking the connecting plate position, support lifting equipment's platform effect, avoid the platform to exert the effort of pushing down to the piston rod, cause the oil blanket of piston rod and cylinder body junction to damage, hydraulic oil oozes through piston rod and cylinder body junction to increase hydraulic cylinder body's life.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic perspective view of the present utility model;

FIG. 2 shows a front view of the present utility model;

FIG. 3 shows a cross-sectional view in the direction A-A of FIG. 2 of the present utility model;

FIG. 4 shows an enlarged view of the utility model at A in FIG. 3;

FIG. 5 shows a schematic view of the mounting structure of the locking mechanism and mounting block of the present utility model;

FIG. 6 shows an enlarged view of the utility model at B in FIG. 5;

The figure shows: 1. a hydraulic cylinder body; 11. a cylinder; 12. a piston rod; 13. a fixing plate; 14. a connecting plate; 15. a first oil pipe; 16. a second oil pipe; 2. a fixed block; 21. a through groove; 3. a connecting rod; 31. a spiral groove; 4. a locking mechanism; 41. a guide rod; 42. a touch-up rod; 43. a driving member; 431. actuating the lever; 432. a motor; 5. a mounting block; 51. a bottom block; 52. a rotating block; 53. a guide post; 6. a rubber pad; 7. and (3) rolling balls.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

In order to solve the technical problems in the background technology, a bidirectional hydraulic cylinder is provided as follows:

Referring to fig. 1 to 6, the present utility model provides a bidirectional hydraulic cylinder, including: the hydraulic cylinder body 1 comprises a cylinder body 11 and a piston rod 12 which movably penetrates through the top of the cylinder body 11, a fixed plate 13 is fixed at the bottom of the cylinder body 11, a connecting plate 14 is fixed at one end of the piston rod 12 penetrating through the cylinder body 11, wherein a plurality of mounting holes are formed in the fixed plate 13 and the connecting plate 14, the hydraulic cylinder body 1 is conveniently mounted on lifting equipment, the fixed plate 13 is fixed with a base of the lifting equipment, the connecting plate 14 is fixed with a platform of the lifting equipment, a first oil pipe 15 and a second oil pipe 16 which are communicated with the inside of the connecting plate are mounted on the cylinder body 11, and when the hydraulic cylinder is used, oiling is carried out in the cylinder body 11 through the second oil pipe 16, hydraulic oil in the cylinder body 11 is discharged through the first oil pipe 15, and the piston rod 12 can slide outside the cylinder body 11; the fixed block 2 is fixedly arranged on the side wall of the cylinder body 11, a through groove 21 is formed in the fixed block 2, the connecting rod 3 capable of movably penetrating through the through groove 21 is fixedly arranged at the bottom of the connecting plate 14, the mounting block 5 is arranged on the fixed block 2, and the locking mechanism 4 acting on the connecting rod 3 is arranged on the mounting block 5 and used for locking or unlocking the fixed block 2 and the connecting rod 3.

By means of the design of the connecting rod 3 and the locking mechanism 4, when the hydraulic cylinder body 1 is used, the platform of the lifting device is lifted, the piston rod 12 slides along the cylinder body 11 to the outside of the cylinder body 11, the platform can be lifted through the connecting plate 14, the connecting plate 14 is driven to slide along the fixed block 2 to the outside in the displacement process, the locking mechanism 4 is used for locking the fixed block 2 and the connecting rod 3 in the lifting process of the platform, the position of the connecting plate 14 is locked, the supporting effect of the platform of the lifting device is achieved, the fact that the platform applies a pressing force to the piston rod 12 to cause oil seal damage of the joint of the piston rod 12 and the cylinder body 11 is avoided, hydraulic oil seeps out from the joint of the piston rod 12 and the cylinder body 11, and therefore the service life of the hydraulic cylinder body 1 is prolonged.

Example two

As shown in fig. 1 to 6, on the basis of the above embodiment, the present embodiment further provides the following:

In this embodiment, the locking mechanism 4 includes a guide bar 41 horizontally and fixedly mounted on a mounting block 5, a contact bar 42 is slidably mounted on the guide bar 41 horizontally, and an actuator 43 acting on the contact bar 42 is mounted on the mounting block 5 for sliding or stopping sliding of the contact bar 42 along the guide bar 41; the driving member 43 includes a driving rod 431 rotatably mounted on the mounting block 5, the driving rod 431 is in threaded connection with the abutting rod 42, and a motor 432 connected with the abutting rod 42 is fixedly mounted on the mounting block 5.

During the use, control motor 432 opens, and motor 432 output shaft rotates, drives to drive the pole 431 and rotates, makes conflict pole 42 follow guide bar 41 to connecting rod 3 direction removal for conflict pole 42 forms the conflict with connecting rod 3, can realize carrying out fixed effect between the fixed block 2 to connecting rod 3, because drive pole 431 and conflict pole 42 threaded connection have the auto-lock nature, consequently, when driving pole 431 not rotate, can fix between touch pole 42 and the connecting rod 3, the operation of being convenient for.

In this embodiment, a rubber pad 6 is fixed to an end of the abutting rod 42 near the connecting rod 3.

By means of the rubber pad 6, when the abutting rod 42 abuts against the connecting rod 3, the rubber pad 6 abuts against the connecting rod 3, friction force between the abutting rod 42 and the connecting rod 3 is increased, and fixing effect between the abutting rod 42 and the connecting rod 3 is further improved.

Example III

As shown in fig. 1 to 6, on the basis of the above embodiment, the present embodiment further provides the following:

In this embodiment, the installation piece 5 includes the bottom block 51 of installing at fixed block 2 top, and connecting rod 3 activity runs through bottom block 51, and the outside bearing of bottom block 51 installs the cover and establishes the external rotor block 52 at connecting rod 3, has set firmly on the rotor block 52 and is the guide post 53 of horizontal direction, the connecting rod 3 is outside and has seted up helical groove 31 along its axis direction, and guide post 53 tip extends to in the helical groove 31 and with helical groove 31 sliding connection, and the equal movable cover of conflict pole 42, rubber pad 6 is established in the guide post 53 outside, and it is specifically to say: the guide rod 41 is fixed on the rotating block 52, the driving rod 431 is rotatably installed on the rotating block 52, and the motor 432 is fixedly installed on the rotating block 52.

Utilize the design of turning block 52, guide post 53 and helicla flute 31, slide to the cylinder body 11 outside along cylinder body 11, when driving connecting plate 14 displacement, drive connecting rod 3 vertical upward movement, guide post 53 slides along helicla flute 31, thereby make turning block 52 rotate on backing block 51, conflict pole 42, the equal movable sleeve of rubber pad 6 is established in guide post 53 outside, motor 432 output shaft rotates, drive and order about pole 431 to rotate, when making rubber pad 6 form the conflict with connecting rod 3, rubber pad 6 displacement helicla flute 31, thereby further improve the fixed effect between touch-up pole 42 and the connecting rod 3.

In this embodiment, the end of the guide post 53 is provided with a ball 7, and the ball 7 is attached to the inner wall of the spiral groove 31.

By means of the design of the balls 7, the balls 7 are attached to the inner wall of the spiral groove 31, and when the guide post 53 slides along the spiral groove 31, the balls 7 roll along the inner wall of the spiral groove 31, so that the guide post 53 slides along the spiral groove 31 more smoothly.

In this embodiment, the bottom block 51 is fixedly mounted on the fixed block 2 through a screw, so that the bottom block 51 is convenient to detach, and therefore the mounting block 5 and the locking mechanism 4 are detached, and the locking mechanism 4 is convenient to overhaul and maintain.

The working principle and the using flow of the utility model are as follows:

When in use, the utility model is characterized in that:

when the hydraulic oil cylinder body 1 is used, the platform of the lifting equipment is lifted, the piston rod 12 slides along the cylinder body 11 to the outside of the cylinder body 11, and the platform can be lifted through the connecting plate 14; the connecting plate 14 is displaced to drive the connecting rod 3 to vertically move upwards, the guide post 53 slides along the spiral groove 31, the ball 7 rolls along the inner wall of the spiral groove 31, and the rotating block 52 rotates on the bottom block 51;

In the process of lifting the platform by the connecting plate 14, the motor 432 is controlled to be started, the output shaft of the motor 432 rotates to drive the rod 431 to rotate, the abutting rod 42 moves along the guide rod 41 towards the connecting rod 3, the rubber pad 6 and the connecting rod 3 form abutting against the abutting rod 42 and the connecting rod 3 to be fixed, and the effect of supporting the platform of the lifting equipment is achieved;

When the abutting rod 42 and the connecting rod 3 are not required to be fixed, the motor 432 is controlled to be started, so that the output shaft of the motor 432 reversely rotates to drive the rod 431 to rotate, and the abutting rod 42 moves along the guide rod 41 in the direction away from the connecting rod 3, so that the fixation between the abutting rod 42 and the connecting rod 3 can be canceled;

When the locking mechanism 4 is overhauled and maintained, the piston rod 12 is made to slide along the cylinder 11 to the outside of the cylinder 11, so that the connecting rod 3 moves to the upper part of the rotating block 52, and the screws used for fixing the bottom block 51 and the fixed block 2 are disassembled, so that the bottom block 51 can be disassembled, and the mounting block 5 and the locking mechanism 4 are disassembled, so that the locking mechanism 4 is convenient to overhaul and maintain.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. A two-way action type hydraulic cylinder is characterized in that: comprising the following steps:

The hydraulic cylinder body (1) comprises a cylinder body (11) and a piston rod (12) which movably penetrates through the top of the cylinder body (11), a fixed plate (13) is fixed at the bottom of the cylinder body (11), a connecting plate (14) is fixed at one end of the piston rod (12) which penetrates through the cylinder body (11), and a first oil pipe (15) and a second oil pipe (16) which are communicated with the inside of the cylinder body (11) are arranged on the cylinder body (11);

Fixed block (2), it sets firmly on cylinder body (11) lateral wall, and fixed block (2) inner structure has logical groove (21), and connecting rod (3) that connecting plate (14) bottom fixed mounting has movable through groove (21) install installation piece (5) on fixed block (2), installs locking mechanical system (4) that act on connecting rod (3) on installation piece (5), and it is used for locking or canceling the locking between fixed block (2) and connecting rod (3).

2. A double-acting hydraulic ram as defined in claim 1, wherein: the locking mechanism (4) comprises a guide rod (41) which is horizontally arranged and fixedly provided with a mounting block (5), a contact rod (42) is slidably arranged on the guide rod (41) in the horizontal direction, and an actuating piece (43) acting on the contact rod (42) is arranged on the mounting block (5) and is used for enabling the contact rod (42) to slide or stop sliding along the guide rod (41).

3. A double-acting hydraulic ram as defined in claim 2, wherein: the driving piece (43) comprises a driving rod (431) rotatably mounted on the mounting block (5), the driving rod (431) is in threaded connection with the abutting rod (42), and a motor (432) connected with the abutting rod (42) is fixedly mounted on the mounting block (5).

4. A double-acting hydraulic ram as defined in claim 2, wherein: one end of the abutting rod (42) close to the connecting rod (3) is fixed with a rubber pad (6).

5. The double-acting hydraulic cylinder as claimed in claim 4, wherein: the installation piece (5) is including installing the bottom block (51) at fixed block (2) top, and connecting rod (3) activity runs through bottom block (51), and outside bearing of bottom block (51) installs the cover and establishes at outside rotating block (52) of connecting rod (3), has set firmly guide post (53) that are the horizontal direction on rotating block (52), spiral groove (31) have been seted up in connecting rod (3) outside and along its axis direction, guide post (53) tip extend to in spiral groove (31) and with spiral groove (31) sliding connection, and outside guide post (53) are established to the equal movable sleeve of conflict pole (42), rubber pad (6).

6. The double-acting hydraulic cylinder as claimed in claim 5, wherein: the end of the guide post (53) is provided with a ball (7), and the ball (7) is attached to the inside of the spiral groove (31).

7. The double-acting hydraulic cylinder as claimed in claim 5, wherein: the bottom block (51) is fixedly arranged on the fixed block (2) through screws.