Anti-bouncing ejector rod used on hydraulic machine

Abstract

The utility model belongs to the technical field of disassembly, assembly and maintenance instruments, and particularly discloses an anti-bounce ejector rod used on a hydraulic machine, which comprises an ejector rod main body and a first sleeve, the first sleeve is welded at the end part of the ejector rod main body, the first sleeve is sleeved on the outer side of a piston rod of a hydraulic cylinder, and the other end of the ejector rod main body is movably connected with a second sleeve. The second sleeve is connected to the outer side of a to-be-disassembled piece in a sleeved mode, the tail end of the ejector rod body is right opposite to a mandrel of the to-be-disassembled piece, and if an existing ejector rod body for the hydraulic machine cannot be coaxial with a hydraulic push rod and the mandrel of the to-be-disassembled piece, bouncing is prone to occurring, and potential safety hazards exist. The ejector rod body and the to-be-disassembled part mandrel are concentrically positioned through the second sleeve, it is ensured that the to-be-disassembled part mandrel, the ejector rod body and the hydraulic cylinder piston rod are coaxial during clamping, the position of the ejector rod body is limited through the first sleeve and the second sleeve, and the ejector rod body is prevented from deviating in the pushing process of the hydraulic cylinder piston rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to dismantling and repairing instrument technical field, concretely relates to a kind of anti-bounce ejector rod used on hydraulic machine. BACKGROUND

[0002] Dismantling and assembling operation is a common operation in equipment maintenance work, and hydraulic machine, as a kind of mechanical parts dismounting equipment, has strict safety requirements for its correct use and safety precautions before use. Especially during the pressing operation of the hydraulic machine, the hydraulic cylinder rod, the ejector rod clamped between the cylinder rod and the disassembled parts and the center line of the disassembled parts must be coincident. If the center lines of the hydraulic cylinder rod, the ejector rod clamped between the cylinder rod and the disassembled parts and the disassembled parts are inclined to each other or the coaxiality of the center lines of the three exceeds a certain range, the ejector rod clamped between the hydraulic cylinder rod and the workpiece is likely to be bounced during the pressing operation. Once the ejector rod is bounced during the pressing operation, it not only damages the hydraulic equipment and mechanism, but also poses a great safety risk.

[0003] Patent No. CN204604224U discloses a special ejector rod for hydraulic puller, which is composed of five parts: ejector rod I, ejector rod II, ejector rod III, ejector rod IV and ejector rod V. Ejector rod I is the basic ejector rod, ejector rod II and ejector rod III are plug-in fitting ejector rods, ejector rod IV is a plug-in fitting ejector rod, and ejector rod V is a one-way sleeve fitting variable diameter ejector rod. The features are as follows: ejector rod I is assembled with ejector rod II by internal plug-in fitting, ejector rod II is assembled with ejector rod III by external plug-in fitting, ejector rod III is assembled with ejector rod II and ejector rod IV by sleeve fitting, and ejector rod V is assembled with ejector rod II and ejector rod IV by plug-in fitting. The special ejector rod for hydraulic puller has simple structure and can be used for various specifications of motor wheel disassembly hydraulic puller, which can reduce the selection of ejector rods, improve maintenance efficiency, solve the problem of motor wheel disassembly, save manpower and time, and improve production efficiency.

[0004] However, the above-mentioned scheme is prone to bouncing when the ejector rod is not coaxial with the hydraulic push rod and the disassembled part, which poses a safety risk. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an anti-bounce ejector rod used on hydraulic machine to solve the problem of easy bouncing of the ejector rod during use.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is as follows: an anti-bounce ejector rod used on hydraulic machine, which comprises an ejector rod main body and a first sleeve, the first sleeve is welded at the end of the ejector rod main body, the first sleeve is sleeved with the outside of the hydraulic cylinder piston rod, the other end of the ejector rod main body is movably connected with a second sleeve, the second sleeve is sleeved outside the disassembled part, and the end of the ejector rod main body is opposite to the core shaft of the disassembled part.

[0007] The utility model discloses a principle and beneficial effect at: through the first sleeve, the top rod main part is with hydraulic cylinder piston rod concentric positioning, through the second sleeve, the top rod main part is with the dismantling spare mandrel concentric positioning, ensure when clamping, the dismantling spare mandrel, top rod main part and hydraulic cylinder piston rod are coaxial, through the first sleeve with the position of second sleeve limitation top rod main part, prevent the top rod main body from deviating in the process of hydraulic cylinder piston rod advancing.

[0008] Scheme two, this is the preferred basic scheme, the first sleeve circumferential thread is passed through and is adjusted the bolt, the end of the adjusting bolt is not threaded, the end of the adjusting bolt is rotatably connected with the positioning block, the surface of the positioning block is welded with the slide rod, the slide rod penetrates the first sleeve, and the slide rod top is welded with the stopper. The arc-shaped positioning block can be attached to the surface of the hydraulic cylinder piston rod. By rotating the adjusting bolt, the position of the positioning block can be adjusted. It can be applied to the disassembly and assembly operation of hydraulic cylinders of different sizes. The top rod main body and the piston rod can be centered by fine-tuning the circumferential adjusting bolts. The slide rod prevents the positioning block from rotating with the adjusting bolt. The stopper prevents the slide rod from coming out of the sleeve.

[0009] Scheme three, this is the preferred basic scheme, the bottom end of the first sleeve is welded with the first reinforcing rib. Increase the connection strength of the top rod main body and the first sleeve.

[0010] Scheme four, this is the preferred basic scheme, the end of the top rod main body is provided with a tapered top. After the tapered top of the top rod main body abuts against the dismantling spare mandrel, the top rod main body is not easy to deviate in the circumferential direction.

[0011] Scheme five, this is the preferred basic scheme, the second sleeve end is provided with a sealing plate, the sealing plate is welded with a third sleeve, the third sleeve is in the second sleeve, the second sleeve and the third sleeve are welded with a second reinforcing rib, and the third sleeve is slidably connected with the top rod main body. The second sleeve is sleeved with the outside of the dismantling spare to make the top rod main body concentric with the dismantling spare mandrel. The third sleeve increases the contact area of the top rod main body and the sleeve. When the top rod main body deviates slightly, the second sleeve and the third sleeve bear the deviation force to prevent the top rod main body from bouncing.

[0012] Scheme six, this is the preferred basic scheme, a plurality of adjusting sleeves are sleeved in the second sleeve. By increasing adjusting sleeves of different sizes, the second sleeve can be used for dismantling spares of different sizes.

[0013] Scheme seven, this is the preferred basic scheme, the surface of the top rod main body is welded with a lifting ring. It is convenient to lift the top rod main body, and it is convenient for the operator to operate. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the anti-bouncing top rod used on the hydraulic machine of the utility model;

[0015] Figure 2 is a use schematic view of the bullet-proof ejector rod lock used on the hydraulic machine;

[0016] Figure 3 is Figure 2 the sectional view at A in the figure;

[0017] Figure 4 is Figure 3 the local enlarged view at B in the figure. DETAILED DESCRIPTION

[0018] The utility model will be further explained in detail through specific implementation ways:

[0019] The reference signs in the description accompanying drawings include: 1-ejector rod main body, 2-first sleeve, 3-hydraulic cylinder, 4-second sleeve, 5-pieces to be disassembled, 6-core shaft of pieces to be disassembled, 7-adjusting bolt, 8-positioning block, 9-sliding rod, 10-stop block, 11-first reinforcing rib, 12-cone top, 13-enclosing plate, 14-third sleeve, 15-second reinforcing rib, 16-adjusting sleeve, 17-lifting ring.

[0020] EMBODIMENT

[0021] As Figures 1 to 4 shown: a bullet-proof ejector rod used on the hydraulic machine, including ejector rod main body 1 and first sleeve 2, first sleeve 2 is welded in one end of ejector rod main body 1, first sleeve 2 is sleeved in the outer side of hydraulic cylinder 3 piston rod, first sleeve 2 circumferential thread is passed through adjusting bolt 7, the end of adjusting bolt 7 is not threaded, the end of adjusting bolt 7 is rotatably connected with positioning block 8, the surface of positioning block 8 is welded with sliding rod 9, sliding rod 9 is passed through first sleeve 2, the top end of sliding rod 9 is welded with stop block 10, the bottom end of first sleeve 2 is welded with first reinforcing rib 11, the other end of ejector rod main body 1 is movably connected with second sleeve 4, second sleeve 4 end is equipped with enclosing plate 13, enclosing plate 13 is welded with third sleeve 14, third sleeve 14 is in second sleeve 4, second sleeve 4 and third sleeve 14 are welded with second reinforcing rib 15, third sleeve 14 is slidably connected with ejector rod main body 1, the end of ejector rod main body 1 is equipped with cone top 12, a plurality of adjusting sleeves 16 are sleeved in second sleeve 4, the surface of ejector rod main body 1 is welded with lifting ring 17.

[0022] The embodiment of the present application is that when the disassembling operation is performed, the to-be-disassembled part 5 is fixed, the bulletproof jack rod is hoisted to the hydraulic cylinder 3 by the travelling crane, the piston rod of the hydraulic cylinder 3 is inserted into the first sleeve 2, the adjusting sleeve 16 matched with the outer diameter of the to-be-disassembled part 5 is placed in the second sleeve 4, the second sleeve 4 is sleeved on the outside of the to-be-disassembled part 5, the adjusting bolt 7 is rotated by the wrench, the adjusting bolt 7 drives the positioning block 8 to move, when the stop block 10 contacts the surface of the first sleeve 2, the positioning block 8 no longer advances, the jack rod main body 1 is adjusted to be concentric with the piston rod of the hydraulic cylinder 3 and the to-be-disassembled part shaft 6, the hydraulic cylinder 3 is started, the hydraulic cylinder 3 drives the jack rod main body 1 to advance, and the to-be-disassembled part shaft 6 is jacked out from the other end of the to-be-disassembled part 5.

[0023] The above is only the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A hydraulic press for preventing a spring-up rod from being hit by a bullet, characterized in that, Including the top rod body (1) and first sleeve (2), first sleeve (2) is welded in the top rod body (1) end, first sleeve (2) sleeve and the outside of hydraulic cylinder (3) piston rod, the other end of the top rod body (1) is movably connected with second sleeve (4), second sleeve (4) is sleeved in the outside of the piece to be disassembled (5), the end of the top rod body (1) is opposite to the core shaft (6) of the piece to be disassembled.

2. A hydraulic machine's anti-bouncing top rod as claimed in claim 1, characterized in that The first sleeve (2) is threaded through with adjusting bolt (7) in the circumferential direction, the end of the adjusting bolt (7) is not threaded, the end of the adjusting bolt (7) is rotatably connected with the positioning block (8), the surface of the positioning block (8) is welded with the slide rod (9), the slide rod (9) penetrates the first sleeve (2), the top end of the slide rod (9) is welded with the stop block (10).

3. The anti-bounce ejector rod for use in a hydraulic machine according to claim 1, wherein The bottom end of the first sleeve (2) is welded with the first reinforcing rib (11).

4. The anti-bounce ejector rod for use in a hydraulic machine according to claim 1, wherein The end of the top rod body (1) is provided with a tapered top (12).

5. The anti-bounce ejector rod for use in a hydraulic machine according to claim 1, wherein The end of the second sleeve (4) is provided with a sealing plate (13), the sealing plate (13) is welded with the third sleeve (14), the third sleeve (14) is in the second sleeve (4), the second sleeve (4) and the third sleeve (14) are welded with the second reinforcing rib (15), the third sleeve (14) is slidably connected with the top rod body (1).

6. A hydraulic machine's anti-bouncing top rod as claimed in claim 1, characterized in that, The second sleeve (4) is sleeved with a plurality of adjusting sleeves (16).

7. The anti-bounce ejector rod for use in a hydraulic machine according to claim 1, wherein The surface of the top rod body (1) is welded with the lifting ring (17).

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