Load-reducing counterweight structure of oil hydraulic cylinder

Abstract

The utility model belongs to the technical field of counterweight pull cylinders, and particularly relates to a load-reducing counterweight structure of an oil hydraulic cylinder, which comprises a steel pipe, a front end cover and a rear end cover which are fixed at two ends of the steel pipe, and a mounting flange detachably mounted on the front end cover, a snap ring is fixed on the front end cover, and the rear end cover is fixed on the mounting flange. The mounting flange comprises a first half flange, the first half flange is of a semicircular structure, and a first clamping groove allowing the clamping ring to be embedded is formed in the inner wall of the first half flange; a positioning block; the second half flange is of a semicircular structure, and a second clamping groove allowing the clamping ring to be embedded therein is formed in the inner wall of the second half flange; the positioning block is embedded into the positioning groove and then is fixed by the fixing piece; according to the utility model, the mounting flange is designed to be detachable, so that the mounting flanges with different sizes can be conveniently replaced according to different mounting requirements, the mounting reliability of the counterweight pull cylinder is ensured, and the damaged mounting flange can be conveniently replaced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to counterweight pull cylinder technical field, concretely relates to an oil pressure cylinder load lightening counterweight structure. BACKGROUND

[0002] Counterweight pull cylinder is a kind of commonly used accessories of gantry numerical control machining center, and it is a kind of counterweight pull cylinder hydraulic cylinder, guides the linear reciprocating motion of piston in cylinder, and counterweight pull cylinder can be moved by internal piston rod to push or pull the equipment installed on output end.

[0003] At present, for the counterweight pull cylinder of gantry numerical control machining center and vertical machining center machine, mounting flange is usually configured, and the counterweight pull cylinder is installed and fixed by using mounting flange.

[0004] In the prior art, the Chinese utility model patent with the authorization announcement number CN218971549U discloses "a novel counterweight pull cylinder", which comprises a front end cover, a cylinder barrel is installed in the front end cover, a piston rod is installed in the cylinder barrel, a dustproof ring is installed on the outer wall of the front end of the piston rod;A first wear-resistant ring is arranged at the rear end of the dustproof ring, a U-shaped pull rod seal is arranged at the rear end of the first wear-resistant ring;A combined pull rod seal is arranged at the rear end of the U-shaped pull rod seal, and an exhaust hole is formed at the rear end of the device, and an exhaust hole is arranged at the rear end of the device, which can greatly reduce the noise generated by the device during use.

[0005] Although the counterweight pull cylinder in the prior art has the characteristics of low noise, the mounting flange configured by the counterweight pull cylinder is usually welded on the cylinder body, which can meet the general installation requirements, but it is difficult to replace the mounting flanges of different sizes according to different installation needs, and there is great use limitation.

[0006] To solve the above problems, an oil pressure cylinder load lightening counterweight structure is provided in the present application. CONTENT OF THE UTILITY MODEL

[0007] To solve the above problems in the prior art, the utility model provides an oil pressure cylinder load lightening counterweight structure, which has the characteristics of convenient use, easy replacement and wide application range.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: an oil pressure cylinder load lightening counterweight structure, which comprises a steel pipe, a front end cover and a rear end cover fixed at both ends of the steel pipe, a piston rod arranged in the steel pipe, one end of the piston rod extending out of the front end cover, an oil inlet on the rear end cover, a mounting flange detachably mounted on the front end cover, a snap ring fixed on the front end cover, and the mounting flange comprising:

[0009] The first half flange is a semicircular structure, and a first clamping groove for embedding the clamping ring is arranged on the inner wall of the first half flange.

[0010] The positioning blocks are symmetrically fixed to the two ends of the first half flange.

[0011] The second half flange is a semicircular structure, and a second clamping groove for embedding the clamping ring is arranged on the inner wall of the second half flange.

[0012] The fixing member is used for fixing the positioning blocks embedded in the positioning grooves.

[0013] As a preferred technical scheme of the utility model, the fixing member is a bolt, and a threaded hole for screwing in the fixing member is arranged on the second half flange.

[0014] As a preferred technical scheme of the utility model, a limiting groove for embedding the fixing member is arranged on the positioning block.

[0015] As a preferred technical scheme of the utility model, the outer wall of the clamping ring abuts against the inner walls of the first clamping groove and the second clamping groove.

[0016] As a preferred technical scheme of the utility model, the outer wall of the positioning block abuts against the inner wall of the positioning groove.

[0017] As a preferred technical scheme of the utility model, the utility model further comprises:

[0018] The two guide belts are symmetrically fixed to the inner wall of the front end cover, and the inner wall of the guide belt abuts against the outer wall of the piston rod.

[0019] As a preferred technical scheme of the utility model, the utility model further comprises:

[0020] The first U-shaped sealing ring is arranged in the first sealing groove in the inner wall of the front end cover.

[0021] The second U-shaped sealing ring is arranged in the third sealing groove in the inner wall of the front end cover, and the second U-shaped sealing ring is opposite to the first U-shaped sealing ring in direction.

[0022] As a preferred technical scheme of the utility model, the utility model further comprises:

[0023] The support rings are arranged in the first sealing groove and the third sealing groove respectively, and the support rings are located at the back of the first U-shaped sealing ring and the second U-shaped sealing ring respectively.

[0024] As a preferred technical scheme of the utility model, further comprising:

[0025] The stellite is arranged in the second sealing groove, and the stellite is located between the first U-shaped sealing ring and the second U-shaped sealing ring.

[0026] As a preferred technical scheme of the utility model, further comprising:

[0027] The copper silencer is fixed on the front end cover.

[0028] Compared with the prior art, the utility model has the beneficial effects that:

[0029] In the utility model, the mounting flange is detachable design, different size mounting flanges can be replaced according to different installation needs, the reliability of counterweight cylinder pulling installation is guaranteed, and damaged mounting flanges can also be conveniently replaced.

[0030] Other additional advantages and beneficial effects of the present application will be partially given in the following description, partially become obvious from the following description, or be known by the practice of the present application. DETAILED DESCRIPTION

[0031] The accompanying drawings are intended to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0032] Figure 1 It is the structural schematic diagram of the utility model;

[0033] Figure 2 It is the structural schematic diagram of the utility model Figure 1 in A place amplification structure schematic diagram;

[0034] Figure 3 It is the steel pipe cross section structure schematic diagram in the utility model;

[0035] Figure 4 It is the front end cover cross section structure schematic diagram in the utility model.

[0036] In the figure: 1, steel pipe; 2, front end cover; 21, snap ring; 22, No. 1 sealing groove; 23, No. 2 sealing groove; 24, No. 3 sealing groove; 3, piston rod; 4, mounting flange; 41, No. 1 half flange; 411, No. 1 clamping groove; 412, positioning block; 4121, limiting groove; 42, No. 2 half flange; 421, No. 2 clamping groove; 422, positioning groove; 423, threaded hole; 43, fixing piece; 5, rear end cover; 51, oil inlet; 6, copper silencer; 7, guide belt; 8, No. 1 U-shaped sealing ring; 9, Stoff seal; 10, No. 2 U-shaped sealing ring; 11, support ring. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] Please refer to Figure 1-Figure 4 The utility model provides the following technical scheme: oil pressure cylinder load reduction counterweight structure, including steel pipe 1 and the front end cover 2 and rear end cover 5 fixed in steel pipe 1 both ends, be equipped with piston rod 3 in steel pipe 1, and the one end of piston rod 3 extends front end cover 2, have oil inlet 51 on rear end cover 5, still include mounting flange 4, mounting flange 4 detachably installs on front end cover 2, and fixed with snap ring 21 on front end cover 2, and mounting flange 4 includes: No. 1 half flange 41, positioning block 412, No. 2 half flange 42 and fixing piece 43.

[0039] Further, by Figure 1 and Figure 2As shown, in the embodiment, the first half flange 41 is a semicircular structure, and has a first clamping groove 411 on the inner wall of the first half flange 41 for embedding the clamping ring 21, and two positioning blocks 412 are symmetrically fixed at the two ends of the first half flange 41, the second half flange 42 is a semicircular structure, and has a second clamping groove 421 on the inner wall of the second half flange 42 for embedding the clamping ring 21, and has a positioning groove 422 at the two ends of the second half flange 42 for embedding the positioning block 412, and the positioning block 412 is fixed after being embedded in the positioning groove 422 by using the fixing member 43. After the above scheme is used, in use, according to the actual installation environment of the counterweight cylinder, the installation flange 4 with a suitable size is selected, the first half flange 41 is butted with the second half flange 42, the clamping ring 21 is embedded in the first clamping groove 411 and the second clamping groove 421 for clamping and limiting, the stability of the installation flange 4 is ensured, the axial displacement of the installation flange 4 is avoided, the positioning block 412 is embedded in the second clamping groove 421, the positioning block 412 is embedded in the positioning groove 422 and then fixed by using the fixing member 43, the fixing of the installation flange 4 is realized, and then the installation flange 4 is fixed on the machine tool of the machining center by using the bolt. The installation flange 4 of the utility model is designed to be detachable, different sizes of installation flanges 4 can be replaced according to different installation needs, the reliability of the installation of the counterweight cylinder is ensured, and the damaged installation flange 4 can also be conveniently replaced.

[0040] Optionally, by Figure 1 and Figure 2 As shown, in the embodiment, the fixing member 43 is a bolt, and the second half flange 42 has a threaded hole 423 for screwing the fixing member 43, so that the fixing member 43 is screwed into the threaded hole 423 and abuts against the positioning block 412, and the stable butt joint of the first half flange 41 and the second half flange 42 can be realized.

[0041] It should be noted that the above scheme is only a preferred embodiment of the utility model, and is not used to limit the utility model. In other available embodiments, the fixing member 43 can also be a rivet or other structural member, which can realize the same fixing effect as the bolt. However, using the bolt as the fixing member 43 also has the advantage of convenient disassembly.

[0042] Preferably, by Figure 1 and Figure 2 As shown, in the embodiment, the positioning block 412 has a limiting groove 4121 for embedding the fixing member 43, and after the fixing member 43 is tightened, the fixing member 43 is embedded in the limiting groove 4121, and the stability of the butt joint of the first half flange 41 and the second half flange 42 is further improved.

[0043] Preferably, by Figure 1 and Figure 2As shown, in the embodiment, the outer wall of the snap ring 21 abuts against the inner wall of the first and second snap grooves 411 and 421, thereby improving the stability of the installation flange 4, and avoiding axial shaking of the installation flange 4.

[0044] Preferably, by Figure 1 and Figure 2 As shown, in the embodiment, the outer wall of the positioning block 412 abuts against the inner wall of the positioning groove 422, thereby improving the stability of the butt joint of the first and second half flanges 41 and 42, and avoiding relative shaking of the first and second half flanges 41 and 42.

[0045] Preferably, by Figure 1 and Figure 4 As shown, in the embodiment, it further comprises two guide belts 7, which are symmetrically fixed to the inner wall of the front end cover 2, and the inner wall of the guide belt 7 abuts against the outer wall of the piston rod 3. Therefore, the counterweight cylinder of the utility model adopts the design of double guide belts 7 for guiding the piston rod 3, thereby improving the stability of the piston rod 3.

[0046] The guide belt 7 can be made of phenolic cloth, which has good wear resistance and damping effect.

[0047] Preferably, by Figure 1 and Figure 4 As shown, in the embodiment, it further comprises a first U-shaped sealing ring 8 and a second U-shaped sealing ring 10, the inner wall of the front end cover 2 is provided with a first sealing groove 22, the first U-shaped sealing ring 8 is arranged in the first sealing groove 22, the inner wall of the front end cover 2 is provided with a third sealing groove 24, the second U-shaped sealing ring 10 is arranged in the third sealing groove 24, and the direction of the second U-shaped sealing ring 10 is opposite to that of the first U-shaped sealing ring 8. Therefore, the counterweight cylinder of the utility model adopts the design of double sealing rings, which has good sealing performance.

[0048] Preferably, by Figure 1 and Figure 4 As shown, in the embodiment, it further comprises a support ring 11, which is arranged in the first and third sealing grooves 22 and 24, and is located at the back of the first and second U-shaped sealing rings 8 and 10, respectively, for supporting the first and second U-shaped sealing rings 8 and 10, thereby ensuring the stability of the first and second U-shaped sealing rings 8 and 10.

[0049] Preferably, by Figure 1 and Figure 4 As shown, in the embodiment, it further comprises a Stoff 9, the inner wall of the front end cover 2 is provided with a second sealing groove 23, the Stoff 9 is arranged in the second sealing groove 23, and the Stoff 9 is located between the first and second U-shaped sealing rings 8 and 10, thereby further improving the sealing performance of the counterweight cylinder.

[0050] Preferably, by Figure 1 and Figure 3 As shown in the embodiment, it also includes: copper silencer 6, copper silencer 6 is fixed on the front end cover 2, copper silencer 6 is a very common silencer, and its silencing principle has been fully disclosed in the prior art, which will not be described here, and the copper silencer 6 is arranged to reduce the noise generated by the counterweight cylinder in operation.

[0051] The components not described in detail herein are prior art.

[0052] The working principle and use process of the utility model: the counterweight cylinder of the utility model, in use, according to the actual installation environment of the counterweight cylinder, select the appropriate size of the installation flange 4, make the first half flange 41 and the second half flange 42 butt joint, at the same time make the snap ring 21 embedded in the first card slot 411 and the second card slot 421 for clamping and limiting, ensure the stability of the installation flange 4, avoid the axial displacement of the installation flange 4, at the same time make the positioning block 412 embedded in the second card slot 421, after the positioning block 412 is embedded in the positioning groove 422, use the fixing part 43 to fix, realize the fixation of the installation flange 4, then use the bolt to fix the installation flange 4 on the machine tool of the machining center.

[0053] The installation flange 4 of the utility model is detachable design, which is convenient for replacing different size installation flanges 4 according to different installation needs, ensures the reliability of the counterweight cylinder installation, and the damaged installation flange 4 can also be replaced conveniently.

[0054] The counterweight cylinder of the utility model adopts the design of double guide belts 7 and double sealing rings, cooperates with the stefen 9, so that the counterweight cylinder of the utility model has high stability and sealing performance.

[0055] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydraulic cylinder load-reducing counterweight structure, comprising a steel pipe (1) and a front end cover (2) and a rear end cover (5) fixed to both ends of the steel pipe (1); a piston rod (3) is provided in the steel pipe (1), and one end of the piston rod (3) extends out of the front end cover (2); and an oil inlet (51) is provided on the rear end cover (5), characterized in that: The invention also includes a mounting flange (4), which is detachably mounted on the front end cover (2), and a snap ring (21) is fixed on the front end cover (2). The mounting flange (4) includes: A first half flange (41), the first half flange (41) is a semicircular structure, and the inner wall of the first half flange (41) is provided with a first clamping groove (411) for the clamping ring (21) to be embedded; Positioning blocks (412), two positioning blocks (412) are symmetrically fixed at both ends of the first half flange (41); A second half flange (42), the second half flange (42) is a semicircular structure, and has a second clamping groove (421) for the clamping ring (21) to be embedded in the inner wall of the second half flange (42), and has positioning grooves (422) for the positioning block (412) to be embedded in both ends of the second half flange (42); A fixing member (43) is used to fix the positioning block (412) after it is embedded in the positioning groove (422).

2. The hydraulic cylinder load-reducing counterweight structure according to claim 1, characterized in that: The fixing member (43) is a bolt, and the second half flange (42) is provided with a threaded hole (423) for the fixing member (43) to be screwed in.

3. The hydraulic cylinder load-reducing counterweight structure according to claim 2, characterized in that: The positioning block (412) is provided with a limiting groove (4121) for the fixing member (43) to be embedded.

4. The hydraulic cylinder load-reducing counterweight structure according to claim 1, characterized in that: The outer wall of the clamping ring (21) abuts against the inner walls of the first clamping groove (411) and the second clamping groove (421).

5. The hydraulic cylinder load-reducing counterweight structure according to claim 1, characterized in that: The outer wall of the positioning block (412) abuts against the inner wall of the positioning groove (422).

6. The hydraulic cylinder load-reducing counterweight structure according to claim 1, characterized in that: Also includes: Guide belts (7), two guide belts (7) are symmetrically fixed to the inner wall of the front end cover (2), and the inner wall of the guide belt (7) is in contact with the outer wall of the piston rod (3).

7. The hydraulic cylinder load-reducing counterweight structure according to claim 1, characterized in that: Also includes: A No. 1 U-shaped sealing ring (8), having a No. 1 sealing groove (22) on the inner wall of the front end cover (2), and the No. 1 U-shaped sealing ring (8) is arranged in the No. 1 sealing groove (22); A No. 2 U-shaped sealing ring (10) is provided with a No. 3 sealing groove (24) on the inner wall of the front end cover (2), the No. 2 U-shaped sealing ring (10) is arranged in the No. 3 sealing groove (24), and the No. 2 U-shaped sealing ring (10) and the No. 1 U-shaped sealing ring (8) are oriented in opposite directions.

8. The hydraulic cylinder load-reducing counterweight structure according to claim 7, characterized in that: Also includes: A support ring (11) is provided in each of the No. 1 sealing groove (22) and the No. 3 sealing groove (24), and the support ring (11) is located at the back of the No. 1 U-shaped sealing ring (8) and the No. 2 U-shaped sealing ring (10), respectively.

9. The hydraulic cylinder load-reducing counterweight structure according to claim 8, characterized in that: Also includes: A step seal (9) is provided with a second sealing groove (23) on the inner wall of the front end cover (2), the step seal (9) is arranged in the second sealing groove (23), and the step seal (9) is located between the first U-shaped sealing ring (8) and the second U-shaped sealing ring (10).

10. The hydraulic cylinder load-reducing counterweight structure according to claim 1, characterized in that: Also includes: A copper silencer (6) is fixed on the front end cover (2).

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