CN210099917U

CN210099917U - Furnace roller bearing dismounting device

Info

Publication number: CN210099917U
Application number: CN201920847497.9U
Authority: CN
Inventors: 闫宏光; 程丙献
Original assignee: Beijing Shougang Cold Rolled Sheet Co Ltd
Current assignee: Beijing Shougang Cold Rolled Sheet Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-02-21
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a stove roller bearing dismounting device, locate with rotationally the cover including the positioning seat annular jack on the positioning seat, the positioning seat has the location end and the screw rod end of arranging in proper order along the axial, the location end is used for realizing annular jack's axial positioning, the screw rod end is passed threaded connection is in the spindle nose of stove roller behind the annular jack. This stove roller bearing dismounting device abandons current artifical mode of knocking, and the dismantlement process utilizes mechanical power completely, need not artifical the knocking, and the security is high, the stationarity is good, the operation is accurate, stops the impaired risk of stove roller spindle nose and reduces maintainer's work burden.

Description

Furnace roller bearing dismounting device

Technical Field

The utility model relates to the technical field of tools, in particular to stove roller bearing dismounting device.

Background

The furnace roller bearing is arranged on a furnace roller of the continuous annealing furnace and is a bearing with a fastening sleeve. At present, when the furnace roller bearing is replaced, a manual hammer is required to strike the clamping sleeve, so that the furnace roller bearing and the clamping sleeve are loosened. The shaft heads of the furnace rollers are easily damaged by manual knocking, physical energy of maintenance personnel is seriously consumed, serious labor burden and potential safety hazards are brought, and the risk that the shaft heads of the furnace rollers are broken due to the knocking error is further increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a furnace roller bearing dismounting device abandons the current artifical mode of strikeing, realizes the safe and stable dismantlement of furnace roller bearing, stops the impaired risk of furnace roller spindle nose and reduces maintainer's work burden.

The utility model provides a stove roller bearing dismounting device, locate with rotationally the cover including the positioning seat annular jack on the positioning seat, the positioning seat has the location end and the screw rod end of arranging in proper order along the axial, the location end is used for realizing annular jack's axial positioning, the screw rod end passes threaded connection is in the spindle nose of stove roller behind the annular jack.

Furthermore, the positioning end comprises an end seat body and a pin shaft, the end seat body, the pin shaft and the screw rod end are sequentially connected along the axial direction, the end seat body is arranged on one axial end face of the annular jack in a blocking mode, and the pin shaft penetrates into an inner ring of the annular jack.

Further, the outer diameter of the end seat body is larger than the inner diameter of the annular jack.

Further, the axial length of the pin shaft is smaller than the thickness of the annular jack.

Further, the end part seat body is provided with a line pipe through hole which penetrates along the axial direction.

Furthermore, one end of the end seat body, which is close to the pin shaft, forms a positioning reference surface, one end, which is far away from the pin shaft, is provided with a rotating operation part or a connecting hole, and the positioning reference surface is connected with the end surface of the annular jack in a positioning manner.

Further, the end seat body, the pin shaft and the screw rod end are coaxially arranged.

Further, the end seat body, the pin shaft and the screw rod end form a three-stage circular truncated cone structure, and the outer diameter of the three-stage circular truncated cone structure decreases progressively from the end seat body to the screw rod end along the axial direction of the three-stage circular truncated cone structure.

Further, the positioning seat is integrally formed.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the annular jack is arranged in a furnace roller shaft head, the positioning seat is in threaded connection with the furnace roller shaft head so as to tightly press the annular jack on a fastening nut of the furnace roller, the annular jack is pressurized and drives a fastening sleeve through the fastening nut, so that the fastening sleeve slides relatively relative to a furnace roller bearing to be loosened, the annular jack is immediately decompressed, and the positioning seat is continuously screwed so as to keep the annular jack tightly pressed on the fastening nut; and repeating the operations of pressurizing, pressure releasing and screwing until the furnace roller bearing and the adapter sleeve are obviously loosened, and then easily detaching the furnace roller bearing. The disassembly process completely utilizes mechanical power, does not need manual knocking, has high safety, good stability and accurate operation, and avoids the damage risk of the shaft head of the furnace roller and reduces the labor burden of maintenance personnel.

Drawings

Fig. 1 is a schematic view of an axial measurement structure of a positioning seat of a furnace roller bearing dismounting device provided by an embodiment of the present invention;

fig. 2 is a schematic working diagram of the furnace roller bearing dismounting device provided by the embodiment of the present invention.

Description of the main element symbols:

1-positioning seat, 11-positioning end, 111-end seat body, 111 a-positioning reference surface, 112-pin shaft, 113-line pipe through hole, 114-connecting hole, 12-screw rod end and 2-annular jack; 3-furnace roller, 4-fastening nut, 5-fastening sleeve and 6-furnace roller bearing.

Detailed Description

Referring to fig. 1-2, the present embodiment discloses a structure of a furnace roller bearing dismounting device, which includes a positioning seat 1 and a ring jack 2 rotatably sleeved on the positioning seat 1, and releases the furnace roller bearing 6 and the clamping sleeve 5 by using mechanical power, thereby releasing labor burden and improving operation safety.

Wherein, the positioning seat 1 has a positioning end 11 and a screw end 12 which are arranged in sequence along the axial direction. The positioning end 11 is used for realizing the axial positioning of the annular jack 2, and the screw rod end 12 penetrates through the inner ring of the annular jack 2 and is in threaded connection with the shaft head of the furnace roller 3. When the positioning seat 1 is spirally connected with the shaft head of the furnace roller 3, the positioning end 11 spirally rotates along with the screw end 12 to press the axial end part of the annular jack 2, so that the annular jack 2 realizes axial positioning and axially moves along with the positioning end 11.

The specific structural form of the positioning end 11 is various, and exemplarily, the positioning end 11 includes an end seat 111 and a pin 112, and the end seat 111, the pin 112 and the screw end 12 are sequentially connected in an axial direction to form an integral structure. The end seat 111 is arranged on one axial end face of the annular jack 2 in a blocking manner, and applies a positioning acting force along the axial direction to the annular jack 2; the annular jack 2 is sleeved on the pin shaft 112 to form pin positioning, and the outer diameter of the pin shaft 112 is smaller than the inner ring diameter of the annular jack 2, so that a clearance fit relationship is formed between the two.

Exemplarily, the outer diameter of the end seat 111 is larger than the inner diameter of the annular jack 2, so as to ensure that the end seat 111 reliably fits and compresses the annular jack 2 along the axial direction. Illustratively, end housing 111, pin 112 are disposed coaxially with screw end 12.

Illustratively, the end housing 111, the pin shaft 112 and the screw end 12 form a three-stage truncated cone configuration, and the outer diameter of the end housing 111 is greater than the outer diameter of the pin shaft 112, and the outer diameter of the pin shaft 112 is greater than the outer diameter of the screw end 12. The end seat 111, the pin 112 and the screw end 12 can be integrally formed in different manners, and exemplarily, the positioning seat 1 is integrally formed, that is, the end seat 111, the pin 112 and the screw end 12 are integrally formed (for example, integrally cast or machined) to make the mechanical properties more desirable.

The locating connection between end seat 111 and ring jack 2 may be a face location. Exemplarily, one end of the end seat 111 near the pin 112 forms a positioning reference surface 111a, and the positioning reference surface 111a forms a surface positioning connection with the end surface of the ring jack 2. In another example, the end seat 111 near the pin 112 has a plurality of positioning pins, which contact with the end surface of the ring jack 2 to form a multi-pin positioning connection.

Exemplarily, one end of the end seat 111 away from the pin 112 has a rotation operation portion. The rotation operation part is used for a maintainer to drive the positioning seat 1 to rotate so as to realize screwing or unscrewing of threads, and the form of the rotation operation part can be a hooking hole, a flange part, a pinching handle and the like formed on the end seat body 111.

Alternatively, the end of the end housing 111 remote from the pin 112 may have a connection hole 114. The connection holes 114 are used for installing bolts or pins, and the maintainers can easily drive the positioning base 1 to rotate through the bolts or pins to realize the tightening operation. It will be appreciated that the bolt or pin functions in concert with the previously described rotational operating portion, and that the rotational operating portion and the attachment aperture 114 may alternatively be provided.

Illustratively, the number of the connection holes 114 is plural (e.g., 4). Exemplarily, the plurality of connection holes 114 are uniformly distributed along the circumferential direction of the end seat 111.

Illustratively, the axial length of the pin 112 is less than the thickness of the ring jack 2. The function of the positioning device is at least to ensure that when the positioning seat 1 is screwed on the furnace roller 3, the end seat body 111 always applies axial acting force to the annular jack 2, and the axial positioning and axial moving power of the annular jack 2 are ensured.

Illustratively, the end housing 111 has conduit through holes 113 axially extending through both side surfaces thereof. When the annular jack 2 is a hydraulic jack, the diameter of the conduit through hole 113 is not smaller than the outer diameter of the oil pipe of the annular jack 2, and is used for accommodating the oil pipe of the annular jack 2. When the ring jack 2 is an electric jack, the conduit through hole 113 is used for accommodating a power supply cable of the ring jack 2.

The screw thread specification of the screw rod end 12 is matched with the matching hole of the shaft head of the furnace roller 3. Illustratively, in one implementation, the screw end 12 may have a thread size of M75 x 6 and a length of 80 mm. Illustratively, the screw end 12 has a thread length 30mm less than the depth of the mating bore of the head of the shaft for ease of adjustment.

Taking the annular jack 2 as a hydraulic jack as an example, the use method of the furnace roller bearing dismounting device is briefly described below. After opening the bearing end cover of the furnace roller 3, firstly loosening the fastening nut 4 and screwing to the outermost end of the fastening sleeve 5, and then sequentially installing the annular jack 2 and the positioning seat 1 into the shaft head of the furnace roller 3.

The positioning seat 1 is screwed, and the annular jack 2 is acted by the positioning seat to approach the tightening nut 4 along the axial direction, so that the positioning seat 1, the annular jack 2 and the tightening nut 4 are pressed tightly. The annular jack 2 is pressed to increase the pressure to a target value and act on the fastening nut 4, so that the fastening nut 4 moves axially in the direction away from the positioning seat 1.

Based on the threaded connection relationship between the clinch nut 4 and the clinch sleeve 5, the clinch sleeve 5 moves axially together with the clinch nut 4. Due to the taper of the adapter sleeve 5, slight looseness occurs between the adapter sleeve 5 and the furnace roller bearing 6. At the moment, the annular jack 2 is decompressed, and the annular jack 2 and the adapter sleeve 5 are loosened. And continuously screwing the positioning sleeve to keep the positioning seat 1, the annular jack 2 and the fastening nut 4 pressed tightly.

The operations of pressurization, pressure relief and screwing are repeated until the furnace roller bearing 6 and the adapter sleeve 5 are obviously loosened. The furnace roller bearing 6 can be easily disassembled by sequentially disassembling the positioning sleeve, the annular jack 2 and the fastening nut 4. The process completely utilizes mechanical power, manual knocking is not needed, the operation is convenient and easy, the safety degree is high, the operation process is stable and accurate, the labor burden of maintenance personnel is greatly reduced, and the damage risk of the shaft head of the furnace roller 3 is avoided.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a stove roller bearing dismounting device which characterized in that includes the positioning seat and rotationally overlaps and locates annular jack on the positioning seat, the positioning seat has along axial positioning end and the screw rod end of arranging in proper order, the positioning end is used for realizing annular jack's axial positioning, the screw rod end passes behind the annular jack threaded connection is in the spindle nose of stove roller.

2. The furnace roller bearing dismounting device according to claim 1, wherein the positioning end comprises an end seat and a pin, the end seat, the pin and the screw end are sequentially connected in an axial direction, the end seat is blocked on one axial end face of the ring jack, and the ring jack is sleeved on the pin.

3. The furnace roller bearing removal device of claim 2, wherein an outer diameter of the end block is greater than an inner diameter of the ring jack.

4. The furnace roller bearing disassembly device of claim 2, wherein the axial length of the pin is less than the thickness of the ring jack.

5. The furnace roller bearing disassembly device of claim 2, wherein the end block has a conduit through hole running axially therethrough.

6. The furnace roller bearing dismounting device according to claim 2, wherein one end of the end seat body close to the pin shaft forms a positioning reference surface, one end far away from the pin shaft is provided with a rotating operation part or a connecting hole, and the positioning reference surface is connected with the end surface of the annular jack in a positioning manner.

7. The furnace roller bearing dismounting device according to claim 2, wherein the end seat, the pin shaft and the screw end are coaxially arranged.

8. The furnace roller bearing dismounting device according to claim 2, wherein the end seat, the pin shaft and the screw end form a three-stage truncated cone structure, and the outer diameter of the three-stage truncated cone structure decreases progressively from the end seat to the screw end along the axial direction thereof.

9. The furnace roller bearing removal device of claim 1, wherein the positioning seat is integrally formed.