Spacer sleeve of tail clamping brake cylinder and tail clamping brake mechanism
By designing a retaining sleeve with a limiting hole that mates with the piston rod in the tail brake cylinder, the air leakage problem caused by the piston rod movement in the cylinder is solved, ensuring stable operation of the cylinder and facilitating maintenance.
Patent Information
- Application Number
- CN202520440418.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-13
AI Technical Summary
The frequent reciprocating motion of the piston rod in the tail brake cylinder causes wear of the air seal assembly, resulting in air leakage in the cylinder, which leads to reduced clamping pressure and mechanical failure.
A retainer sleeve for a tail brake cylinder is designed, comprising an end cap, a circumferential wall, and a fixing component. It is fitted with the piston rod through a limiting hole with clearance. The inner diameter of the limiting hole is smaller than the outer diameter of the air seal assembly. The circumferential wall surrounds the end cap to form an installation cavity and is fixed to the front end of the cylinder by the fixing component to prevent the air seal assembly from being carried out.
It effectively prevents cylinder leakage, improves clamping pressure stability, reduces mechanical failures, requires little installation space, and is easy to maintain and repair.
Smart Images
Figure CN223811406U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to steel manufacturing and its equipment technical field especially relates to a kind of fender sleeve and tail clamping brake mechanism of tail clamping brake cylinder. BACKGROUND
[0002] Tail clamping brake is applied to the traction and braking process of rolled piece, can accurately control the speed and clamping of rolled piece, to realize the accurate control of rolled piece and repeat the position of stopping on cooling bed, make rolled piece length maximization, and cooling bed can be fully utilized. Among them, the opening and closing of pinch roll in tail clamping brake are symmetrical, and are driven by cylinder, and the opening and closing stroke is adjusted by a group of bolts on the top of pinch roll. Therefore, every time a steel piece comes, tail clamping brake cylinder must act once.
[0003] However, when cylinder acts, due to the frequent reciprocating motion of piston rod, the dustproof ring and gas seal assembly at the contact between rod cavity and piston rod of cylinder are impacted, so that the gas seal assembly is easily taken out when piston rod acts poorly lubricated or impact vibration is large, causing serious gas leakage of cylinder, and the clamping pressure of pinch roll in tail clamping brake is reduced to cause failure. SUMMARY
[0004] The main purpose of the utility model is to provide a kind of fender sleeve and tail clamping brake mechanism of tail clamping brake cylinder, solve the technical problem that cylinder causes serious gas leakage and causes failure.
[0005] To achieve the above purpose, the utility model provides a kind of fender sleeve of tail clamping brake cylinder, including end cover, circumferential wall body and fixing piece. Among them:
[0006] End cover has limit hole matched with the gap of piston rod of tail clamping brake cylinder.
[0007] Circumferential wall body is arranged on the inner surface of the end cover, and forms mounting cavity with the end cover, and the mounting cavity is matched with the front end of the tail clamping brake cylinder;The front end is the end of the piston rod on the tail clamping brake cylinder.
[0008] Fixing piece is arranged on the circumferential wall body, for fixing the circumferential wall body on the front end.
[0009] In some embodiments, the matching tolerance of the limit hole is 0.2-0.5mm.
[0010] In some embodiments, the fixing piece includes first hole arranged on the circumferential wall body and bolt matched with the first hole, and the first hole is through hole.
[0011] In some embodiments, the number of first holes is multiple, and is evenly distributed around the circumferential wall body.
[0012] In some embodiments, the plurality of first holes are arranged in multiple columns along an axial direction of the circumferential wall body, each column of first holes comprising a plurality of first holes uniformly distributed around the circumferential wall body, and the first holes in adjacent two columns of first holes are arranged staggeredly.
[0013] In some embodiments, the mounting cavity is cylindrical.
[0014] The utility model also provides a tail clamping brake mechanism, including tail clamping brake cylinder and the fender sleeve of tail clamping brake cylinder above, the front end of tail clamping brake cylinder has gas seal assembly, the fender sleeve is set up in the position of gas seal assembly setting of tail clamping brake cylinder outside.
[0015] In some embodiments, the fixing member comprises a first hole arranged on the circumferential wall body and a bolt matched with the first hole; and the shell of the tail clamping brake cylinder has a second hole matched with the bolt.
[0016] In some embodiments, the minimum diameter of the limiting hole is smaller than the maximum diameter of the gas seal assembly.
[0017] Compared with the prior art, the utility model has the beneficial effects that:
[0018] The utility model provides a fender sleeve of tail clamping brake cylinder, including: end cover, circumferential wall body and fixing member. Wherein, the limiting hole of end cover is matched with the piston rod gap of tail clamping brake cylinder, the inner diameter of limiting hole is less than the outer diameter of gas seal assembly, can form the limiting of gas seal assembly and avoid the piston rod action lubrication to be taken out gas seal assembly when big when the shock and vibration of the cylinder serious gas leakage, the clamping pressure reduction and the trouble of causing. Circumferential wall body is arranged around the inner surface of end cover, and is formed with end cover around installation cavity, and the front end of tail clamping brake cylinder is matched with installation cavity, and the circumferential wall body is fixed in the front end of tail clamping brake cylinder through fixing member, and the mode is side installation mode, and the installation space needed is less, and it is convenient to install and overhaul, and it is more suitable for tail clamping brake cylinder. The utility model designs the mode, makes the limiting hole and the piston rod gap cooperation, makes the back and forth movement of piston rod, does not occur interference, solves the problem of mechanical failure caused by the piston rod taking out gas seal assembly. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.
[0020] Figure 1It is the blocking sleeve diagram of the tail clamping brake cylinder of the utility model;
[0021] Figure 2 It is the sectional view of the blocking sleeve of the tail clamping brake cylinder of the utility model.
[0022] The figure mark is: 10, the blocking sleeve of the tail clamping brake cylinder;11, end cover;12, circumferential wall body;13, fixed part;21, installation cavity;22, limit hole;23, first hole
[0023] The utility model realizes, functional characteristics and advantage will further be explained with reference to the attached drawing in conjunction with implementation. Specific implementation
[0024] The technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the attached drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.
[0025] In addition, the description such as "first", "second" in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature.
[0026] And, the technical scheme of each embodiment of the utility model can be combined with each other, but it must be based on the realization of the ordinary skill in the art, when the combination of technical scheme appears mutual contradiction or unattainable, it should be considered that the combination of technical scheme does not exist, also not in the protection scope required by the utility model.
[0027] The utility model embodiment provides a kind of blocking sleeve of tail clamping brake cylinder and tail clamping brake mechanism, solve the technical problem that cylinder causes serious air leakage and causes fault.
[0028] Referring to Figure 1 The blocking sleeve diagram of the tail clamping brake cylinder of the utility model and Figure 2 The sectional view of the blocking sleeve of the tail clamping brake cylinder of the utility model is shown in the utility model;
[0029] The utility model provides a kind of blocking sleeve of tail clamping brake cylinder, including end cover 11, circumferential wall body 12 and fixed part 13. Wherein:
[0030] End cover 11 has the limit hole 22 of clearance fit with the piston rod of tail clamping brake cylinder.
[0031] In some embodiments, a limiting hole is designed on the end cover to match the gap between the piston and the tail clamping brake cylinder; the limiting hole on the end cover can ensure the correct position and movement trajectory of the piston in the cylinder, prevent excessive movement or deviation, and improve the stability and reliability of the system. At the same time, through the precise matching gap, the limiting hole can help maintain the sealing of the cylinder and prevent gas or liquid leakage.
[0032] Referring to Figure 1 , the circumferential wall 12 is arranged around the inner surface of the end cover 11 and forms a mounting cavity 21 with the end cover 11, which is adapted to the front end of the tail clamping brake cylinder; the front end is the end where the piston rod of the tail clamping brake cylinder is located.
[0033] In some embodiments, the circumference of the end cover is 75mm; the circumference of the circumferential wall is 57±0.2~59±0.2mm. The fixing member is arranged on the circumferential wall for fixing the circumferential wall to the front end.
[0034] The fixing member 13 is arranged on the circumferential wall 12 for fixing the circumferential wall 12 to the front end.
[0035] The utility model provides a kind of sleeve of tail clamping brake cylinder, including: end cover, circumferential wall and fixing member. Wherein, the limiting hole of end cover is matched with the gap between the piston rod of tail clamping brake cylinder, the inner diameter of limiting hole is less than the outer diameter of gas seal assembly, can form limiting to gas seal assembly to avoid that gas cylinder is seriously leaked when piston rod action lubrication is bad or impact vibration is big, clamping pressure is reduced and causes failure. Circumferential wall is arranged around the inner surface of end cover, and mounting cavity is formed with end cover around, and mounting cavity is adapted to the front end of tail clamping brake cylinder;And the circumferential wall is fixed to the front end of tail clamping brake cylinder by fixing member, it is side surface installation mode, and the installation space required is smaller, it is convenient to install and overhaul, more suitable for tail clamping brake cylinder.
[0036] The matching tolerance of limiting hole directly affects the installation accuracy and movement stability of piston rod. In order to ensure the coaxiality and position accuracy of piston rod during working process, referring to Figure 2 In some embodiments, the matching tolerance of the limiting hole 22 is 0.2~0.5mm. In actual application, if high-precision matching of piston rod is required, the matching tolerance of limiting hole should also be selected at a higher level to ensure the matching accuracy between the two.
[0037] In still some embodiments, the limiting hole provided on the end cover is used to match the piston rod without interference when working. Further, the travel range of the piston rod can also be limited, and when the piston rod moves to the limit position, the limiting hole will control or prevent the movement of the piston rod, to effectively protect the tail clamping brake cylinder and its connected components.
[0038] Referring to Figure 2 In some embodiments, the fixing member 13 comprises a first hole 23 provided on the circumferential wall 12, which is a through hole.
[0039] Exemplarily, the bolt is a top rod bolt, such as an internal hexagonal bolt. The first hole is an internal hexagonal threaded hole. The top rod bolt can realize quick disassembly and installation, is convenient for maintenance and replacement, and can bear the weight of the blocking sleeve of the tail clamping brake cylinder. The internal hexagonal threaded hole can make the stress uniform and not easy to deform, has good fastening effect, is more stable in operation, and can sink into the part when used to make the surface of the fixing member flat, is suitable for operation in narrow space, and is more convenient for installation and maintenance.
[0040] In some embodiments, the number of first holes 23 is multiple, which are uniformly distributed around the circumferential wall 12.
[0041] Exemplarily, 2 first holes are symmetrically provided on the circumferential wall, and the blocking sleeve of the tail clamping brake cylinder is fixed on the tail clamping brake cylinder through the bolt.
[0042] Exemplarily, a row of first holes is uniformly arranged in the circumferential direction of the circumferential wall, so as to ensure that the mechanical properties or functions in each direction of the circumferential wall remain consistent, bear the weight of the cylinder blocking sleeve, and ensure the structural strength.
[0043] Correspondingly, the number of first holes is not specifically limited, which can ensure that the cylinder blocking sleeve is fixed on the tail clamping brake cylinder and does not hinder the normal operation of the cylinder.
[0044] In some embodiments, the multiple first holes 23 are arranged in multiple columns along the axial direction of the circumferential wall 12, each column of first holes 23 comprises multiple first holes 23 uniformly distributed around the circumferential wall 12, and the first holes in the adjacent two columns of first holes 23 are arranged staggeredly.
[0045] Exemplarily, the staggered arrangement of the first holes can avoid excessive concentration of stress in a local area, thereby improving the overall strength and reliability of the structure.
[0046] Referring to Figure 1 In some embodiments, the mounting cavity 21 is cylindrical. The cylindrical mounting cavity design enables the blocking sleeve of the cylinder to be quickly positioned and assembled during the installation process, is convenient for cooperation with external components, ensures assembly accuracy and efficiency. At the same time, the cylindrical mounting cavity can uniformly distribute stress and reduce stress concentration.
[0047] The utility model also provides a kind of tail clamping brake mechanism, including tail clamping brake cylinder and the retaining sleeve of above-mentioned tail clamping brake cylinder;The front end of the tail clamping brake cylinder has gas seal assembly, and the retaining sleeve is set on the gas seal assembly setting position outside of the tail clamping brake cylinder.
[0048] In some embodiments, the fixing part 13 includes a first hole 23 arranged on the circumferential wall 12 and a bolt matched with the first hole;The shell of the tail clamping brake cylinder has a second hole matched with the bolt.
[0049] Correspondingly, the shell of the tail clamping brake cylinder has a second hole, and the cooperation of the bolt and the first hole and the second hole realizes fixation, prevents cylinder gas leakage, and enables the tail clamping brake cylinder to work normally.
[0050] In some embodiments, the second hole is a jackscrew hole. The jackscrew hole can effectively prevent the loosening of components caused by equipment operation, ensure the stable operation of the tail clamping brake cylinder, and provide stable support force for bearing the weight of the retaining sleeve of the tail clamping brake cylinder and reducing the wear between components.
[0051] To avoid the problem of cylinder assembly being taken out and leaking when the piston rod moves, in some embodiments, the minimum diameter of the limiting hole 22 is smaller than the maximum diameter of the gas seal assembly. It can be ensured that the gas seal assembly will not move excessively and exceed the limiting range of the retaining sleeve during operation, thereby improving the stability and safety of the equipment. Correspondingly, according to the model of the tail clamping brake cylinder and the cylinder assembly, the size of the retaining sleeve of the tail clamping brake cylinder can also be changed, including changing the size of the end cover and the circumferential wall, so that the retaining sleeve of the tail clamping brake cylinder is fixed on the tail clamping brake cylinder to prevent cylinder gas leakage.
[0052] The utility model provides a kind of retaining sleeve of tail clamping brake cylinder and tail clamping brake mechanism. The retaining sleeve of tail clamping brake cylinder includes end cover, circumferential wall and fixing part. Among them: the end cover has the limiting hole matched with the gap of the piston rod of tail clamping brake cylinder, and the minimum diameter of the limiting hole is smaller than the maximum diameter of the gas seal assembly, avoids that piston rod action lubrication is bad or when impact vibration is big, takes out gas seal assembly and makes cylinder serious leakage, and the problem that fault is caused by reducing clamping pressure. The circumferential wall is arranged on the inner surface of the end cover and is formed mounting cavity with the end cover, and the mounting cavity is matched with the front end of the tail clamping brake cylinder;The first hole is evenly distributed around the circumferential wall, and the retaining sleeve of the tail clamping brake cylinder is fixed on the tail clamping brake cylinder by the bolt matched with the first hole. The utility model design makes the limiting hole matched with the gap of the piston rod, and the piston rod does not interfere when moving back and forth, solves the problem that mechanical failure is caused by taking out gas seal assembly by piston rod.
[0053] The above technical scheme of the utility model discloses, above only for the preferred embodiment of the utility model, not therefore limit the patent range of the utility model, under the technical concept of the utility model, utilize the utility model specification and the content of the drawing are made equivalent structure transformation, or direct / indirectly apply in other related technical field all include in the patent protection range of the utility model.
Claims
1. A retaining sleeve for a tail brake cylinder, characterized in that, Includes an end cap (11), a circumferential wall (12), and a fastener (13), wherein: The end cap (11) has a limiting hole (22) that is clearance-fitted with the piston rod of the tail brake cylinder; A circumferential wall (12) is disposed around the inner surface of the end cap (11) and together with the end cap (11) forms a mounting cavity (21), which is adapted to the front end of the tail-clamping brake cylinder; the front end is the end where the piston rod of the tail-clamping brake cylinder is located. A fastener (13) is provided on the circumferential wall (12) for fixing the circumferential wall (12) to the front end.
2. The retaining sleeve of the tail brake cylinder according to claim 1, characterized in that, The fitting tolerance of the limiting hole (22) is 0.2 to 0.5 mm.
3. The retaining sleeve of the tail brake cylinder according to claim 1, characterized in that, The fastener (13) includes a first hole (23) provided on the circumferential wall (12) and a bolt adapted to the first hole, wherein the first hole (23) is a through hole.
4. The retaining sleeve of the tail brake cylinder according to claim 1, characterized in that, The number of first holes (23) is multiple, and they are evenly distributed around the circumferential wall (12).
5. The retaining sleeve of the tail brake cylinder according to claim 4, characterized in that, Multiple first holes (23) are arranged in multiple rows along the axial direction of the circumferential wall (12). Each row of first holes (23) includes multiple first holes (23) evenly distributed around the circumferential wall (12). The first holes in two adjacent rows of first holes (23) are staggered.
6. The retaining sleeve of the tail brake cylinder according to claim 1, characterized in that, The mounting cavity (21) is cylindrical.
7. A tail-clamping braking mechanism, characterized in that, It includes a tail-clamping brake cylinder and a retaining sleeve according to any one of claims 1 to 6; the front end of the tail-clamping brake cylinder has an air-sealing assembly, and the retaining sleeve is sleeved on the tail-clamping brake cylinder outside the position where the air-sealing assembly is located.
8. The tail-clamping braking mechanism according to claim 7, characterized in that, The fastener (13) includes a first hole (23) provided on the circumferential wall (12) and a bolt adapted to the first hole; the housing of the tail brake cylinder has a second hole that mates with the bolt.
9. The tail-clamping braking mechanism according to claim 7, characterized in that, The minimum diameter of the limiting hole (22) is smaller than the maximum diameter of the air seal assembly.