Spring pipe sleeve limiting assembly and hydraulic cylinder

Abstract

The utility model discloses a spring pipe sleeve limiting assembly and a hydraulic cylinder, and belongs to the field of hydraulic equipment. According to the technical scheme, the spring pipe sleeve limiting assembly comprises a limiting plate, a U-shaped groove is formed in the limiting plate, the groove bottom of the U-shaped groove is in a circular arc shape, and a groove opening of the U-shaped groove is located in one side edge of the limiting plate; a front baffle and a rear baffle are arranged on a set of opposite sides of the limiting plate respectively and extend towards the lower portion of the limiting plate, a bolt is installed on the rear baffle in a threaded mode, and the axial direction of the bolt is perpendicular to the rear baffle. According to the limiting assembly designed in the scheme, the front baffle is matched with the bolts on the rear baffle to be clamped and installed at the top of the hydraulic cylinder, the cylinder rod of the hydraulic cylinder can pass through the U-shaped groove, the limiting plate is located above the hydraulic cylinder, presses the spring pipe sleeve and prevents the spring pipe sleeve from moving upwards, the sealing capacity of the hydraulic cylinder can be improved, and the overhaul period of the disc brake can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic equipment field especially relates to a spring pipe cover limiting assembly and a hydraulic cylinder. BACKGROUND

[0002] The disc brake is an important braking structure of the portal crane, and mainly comprises a brake disc, a brake caliper, brake pads and a hydraulic cylinder. The rotation of the wheel is slowed down or stopped through the friction between the brake disc and the brake pads in the brake caliper. When braking, the hydraulic system transmits force to the brake caliper, so that the brake pads press against the brake disc to generate friction force, thereby achieving the purpose of slowing down or braking.

[0003] In the driving hydraulic cylinder, a spring pipe cover is arranged between the cylinder rod and the cylinder body, which is a protective device installed on the hydraulic cylinder piston rod. Its main function is to protect the piston rod from external pollutants such as dust, moisture, grease, etc. In addition, the spring pipe cover can also absorb the vibration during the movement of the hydraulic cylinder to some extent, reduce noise, and improve the overall operation quality of the system. The structure design of the spring pipe cover makes one end fixed on the end cover of the hydraulic cylinder, and the other end can stretch and contract accordingly with the extension and contraction of the piston rod, thereby maintaining continuous protection of the hydraulic cylinder.

[0004] The spring pipe cover is usually made of plastic. With the use of the disc brake, the spring pipe cover is subject to wear. At this time, the spring pipe cover will move and come off with the extension and contraction of the cylinder rod, and the sealing performance and straightness of the hydraulic cylinder will decrease, which will ultimately affect the use of the disc brake. SUMMARY

[0005] The utility model discloses to the spring pipe cover of hydraulic cylinder's moving problem provides a kind of spring pipe cover limiting assembly.

[0006] To solve the above problems, the technical scheme adopted by the utility model is a spring pipe cover limiting assembly, which comprises a limiting plate, a U-shaped groove is formed in the limiting plate, the groove bottom of the U-shaped groove is arc-shaped, and the groove opening of the U-shaped groove is located on one side edge of the limiting plate; a group of opposite edges of the limiting plate are respectively provided with a front baffle and a rear baffle, the front baffle and the rear baffle extend downward of the limiting plate, a bolt is threadedly installed on the rear baffle, and the axial direction of the bolt is perpendicular to the rear baffle. The limiting assembly designed in the scheme is clamped and installed on the top of the hydraulic cylinder through the front baffle and the bolt on the rear baffle, the U-shaped groove is passed through the cylinder rod of the hydraulic cylinder, the limiting plate is located above the hydraulic cylinder, and the spring pipe cover is pressed to prevent it from moving upward, which can improve the sealing capacity of the hydraulic cylinder and prolong the maintenance period of the disc brake.

[0007] As a preferred implementation scheme of the spring pipe cover limiting assembly, the front baffle and the rear baffle are opposite to each other. The limiting assembly is balanced in front and back, preventing deformation.

[0008] As a preferred implementation of the spring tube sleeve limiting assembly, the bolt is provided with two, and the two bolts are arranged horizontally side by side. Arranging two bolts horizontally can prevent the limiting plate from being lifted and turned over, and improve the connection strength.

[0009] As a preferred implementation of the spring tube sleeve limiting assembly, the opening of the U-shaped groove is located on the side of the limiting plate on which the front baffle is arranged.

[0010] As a preferred implementation of the spring tube sleeve limiting assembly, the bottom surface of the limiting plate is provided with a stepped groove, the stepped groove is U-shaped and larger than the U-shaped groove in size, the groove bottom of the stepped groove is arc-shaped and concentric with the arc-shaped groove bottom of the U-shaped groove, and the groove wall of the stepped groove is parallel to the groove wall of the U-shaped groove. The convex part of the spring tube sleeve is embedded in the stepped groove, the limiting plate can be in contact with the end surface of the cylinder body, and the stability of the installation of the limiting assembly is improved.

[0011] In another aspect, the utility model also provides a hydraulic cylinder, which comprises a cylinder body and a cylinder rod, a spring tube sleeve is arranged between the cylinder body and the cylinder rod, the spring tube sleeve limiting assembly is installed on the cylinder body, the front baffle and the rear baffle are respectively located on the two sides of the cylinder body, the end of the bolt and the front baffle are pressed on the two side walls of the cylinder body, the cylinder rod passes through the groove bottom position of the U-shaped groove, and the bottom surface of the limiting plate is in contact with the upper end surface of the spring tube sleeve. The hydraulic cylinder provided by the scheme adopts the spring tube sleeve limiting assembly, the cylinder body is clamped by the bolt and the front baffle, the limiting plate is pressed above the spring tube sleeve, the upward movement of the spring tube sleeve is inhibited, and the hydraulic cylinder has better sealing performance and service life.

[0012] As a preferred implementation of the hydraulic cylinder, the outer wall of the cylinder body is provided with a clamping groove, and the end of the bolt is embedded in the clamping groove. The clamping groove is arranged on the cylinder body, the bolt is embedded, and rigid limiting is formed in the extension direction of the cylinder rod, so that the limiting assembly can be prevented from being lifted, and the connection strength is greatly improved.

[0013] The utility model discloses a spring pipe sleeve limiting assembly, which is installed on the top of a hydraulic cylinder, and the spring pipe sleeve is pressed by a limiting plate to prevent it from moving upward, thereby significantly improving the sealing capacity of the hydraulic cylinder and reducing the risk of leakage. In addition, the two horizontally arranged bolts enhance the connection strength and prevent the limiting plate from turning over, ensuring the stability of the assembly. The front and rear baffles are designed to be opposite to each other, achieving force balance and avoiding deformation caused by uneven force. The step groove on the bottom surface of the limiting plate improves the installation stability, and the protruding part of the spring pipe sleeve is embedded in the step groove, enhancing the contact stability with the end surface of the cylinder body. Finally, the clamping groove on the outer wall of the hydraulic cylinder provides rigid limiting, avoiding the limiting assembly from being lifted up, and further improving the reliability of the connection. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the technical scheme of the utility model more clear, the following will briefly introduce the drawings needed to be used in the description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 Structure diagram of the utility model embodiment one Figure One .

[0016] Figure 2 Structure diagram of the utility model embodiment one Figure Two .

[0017] Figure 3 Structure diagram of the utility model embodiment two.

[0018] Main drawing mark explanation

[0019] 1. Limiting plate, 2. U-shaped groove, 3. Front baffle, 4. Rear baffle, 5. Bolt, 6. Step groove, 7. Cylinder body, 8. Spring pipe sleeve, 9. Cylinder rod, 10. Clamping groove. DETAILED DESCRIPTION

[0020] In order to make the technical scheme of the utility model more clear, the following will briefly introduce the drawings needed to be used in the description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Embodiment one

[0022] As shown in Figure 1 , Figure 2 , a spring tube sleeve limiting assembly, comprising a limiting plate 1, a front baffle 3 and a rear baffle 4 are respectively arranged on a group of opposite edges of the limiting plate 1 close to the end position, the front baffle 3 and the rear baffle 4 are perpendicular to the limiting plate 1, the front baffle 3 and the rear baffle 4 extend downward of the limiting plate 1, and the front baffle 3 and the rear baffle 4 are opposite to each other, a bolt 5 is threadedly installed on the rear baffle 4, the axial direction of the bolt 5 is perpendicular to the rear baffle 4 and faces the front baffle 3, preferably two bolts 5 are horizontally arranged side by side.

[0023] A U-shaped groove 2 is formed on the limiting plate 1, the groove bottom of the U-shaped groove 2 is arc-shaped, and the groove opening of the U-shaped groove 2 is located on one side edge of the limiting plate 1, preferably is formed on the side edge where the front baffle 3 is arranged. A stepped groove 6 is arranged on the bottom surface of the limiting plate 1, the stepped groove 6 is U-shaped and has a size larger than the U-shaped groove 2, the groove bottom of the stepped groove 6 is arc-shaped and concentric with the arc-shaped groove bottom of the U-shaped groove, and the groove wall of the stepped groove 6 is parallel to the groove wall of the U-shaped groove 2.

[0024] The spring tube sleeve limiting assembly of the embodiment is used by being clamped and installed on the top of the hydraulic cylinder through the front baffle cooperating with the bolt on the rear baffle, the U-shaped groove is used for the cylinder rod of the hydraulic cylinder to pass through, the limiting plate is located above the hydraulic cylinder, and the spring tube sleeve is pressed to prevent it from moving upward.

[0025] Embodiment two

[0026] The embodiment provides a hydraulic cylinder, as shown in Figure 3 , comprising a cylinder body 7 and a cylinder rod 9, a spring tube sleeve 8 is arranged between the cylinder body 7 and the cylinder rod 9, the spring tube sleeve limiting assembly provided by the embodiment one is installed on the rod body, the front baffle 3 and the rear baffle 4 are respectively located on the two sides of the cylinder body 7, the end of the bolt 5 and the front baffle 3 abut against the two side walls of the cylinder body 7, the cylinder rod 9 passes through the groove bottom position of the U-shaped groove 2, and the bottom surface of the limiting plate 1 abuts against the upper end surface of the spring tube sleeve 8; a clamping groove 10 is further formed on the outer wall of the cylinder body 7, and the end of the bolt 5 is embedded in the clamping groove 10.

[0027] The utility model discloses beneficial effects can be seen through the above embodiment, the utility model discloses beneficial effects lie in, a spring pipe cover limiting assembly is designed, is installed at the top of the hydraulic cylinder, and the spring pipe cover is pressed through the limiting plate, and the upward movement is inhibited, thereby the sealing capacity of the hydraulic cylinder is improved significantly, and the leakage risk is reduced, secondly, because of the improvement of the sealing performance, the overhaul cycle of the hydraulic cylinder is extended, and the maintenance cost and downtime are reduced, and the operation efficiency of equipment is improved, in addition, the bolt of two horizontal parallel settings strengthens the connection strength, prevents the limiting plate from turning over, and the stability of the assembly is ensured, simultaneously, the design of the front and rear baffle front and rear confrontation realizes the stress balance, and the deformation caused by uneven stress is avoided, the step groove design of the limiting plate bottom surface improves the installation stability, makes the convex part of spring pipe cover embed therein, and the contact stability with the cylinder body end face is strengthened, finally, the clamping groove design of the hydraulic cylinder outer wall provides rigid limiting, avoids the limiting assembly to be jacked up, and the reliability of connection is further improved.

[0028] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the utility model. Various modifications to these embodiments will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the utility model is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A spring tube sleeve limiting assembly, characterized in that, The limiting plate is provided with a U-shaped slot, the bottom of the U-shaped slot is arc-shaped, and the opening of the U-shaped slot is located on one side edge of the limiting plate; a group of opposite edges of the limiting plate are respectively provided with a front limiting plate and a rear limiting plate, the front limiting plate and the rear limiting plate extend downwards of the limiting plate, a bolt is threadedly installed on the rear limiting plate, and the axial direction of the bolt is perpendicular to the rear limiting plate.

2. The spring tube sleeve stop assembly of claim 1, wherein, The front limiting plate and the rear limiting plate are opposite to each other.

3. The spring tube sleeve stop assembly of claim 1, wherein, The bolt is provided with two, and the two bolts are horizontally arranged in parallel.

4. The spring tube sleeve stop assembly of claim 1, wherein, The opening of the U-shaped slot is located on the side edge of the limiting plate where the front limiting plate is arranged.

5. The spring tube sleeve limiting assembly of any one of claims 1-4, wherein, The bottom surface of the limiting plate is provided with a stepped groove, the stepped groove is U-shaped and larger than the U-shaped slot in size, the bottom of the stepped groove is arc-shaped and concentric with the arc-shaped bottom of the U-shaped slot, and the groove wall of the stepped groove is parallel to the groove wall of the U-shaped slot.

6. A hydraulic cylinder comprising a cylinder body and a cylinder rod, between which a spring tube sleeve is provided, characterized in that The rod body is provided with the spring tube sleeve limiting assembly as claimed in any one of claims 1-5, the front limiting plate and the rear limiting plate are respectively located on two sides of the cylinder body, the end of the bolt and the front limiting plate abut against two side walls of the cylinder body, the cylinder rod passes through the bottom position of the U-shaped slot, and the bottom surface of the limiting plate abuts against the upper end surface of the spring tube sleeve.

7. The hydraulic cylinder of claim 6, wherein, The outer wall of the cylinder body is provided with a clamping groove (10), and the end of the bolt is embedded in the clamping groove (10).

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