CN213734986U - Locking device for follow-up wheel of scanner - Google Patents

Abstract

The utility model relates to a locking device for a follower wheel of a scanning device, which comprises a follower wheel component, a locking gear box, a locking handle, a transmission swing arm and an elastic push rod, wherein the follower wheel component comprises a supporting seat, an eccentric camshaft and a follower wheel, the eccentric camshaft comprises a rotating part and a follower shaft, the axis of the follower shaft deviates to one side relative to the rotating part, the rotating part is arranged in the supporting seat through a first bearing structure, and the follower wheel is arranged at the lower end of the follower shaft through a second bearing structure; the locking gear box includes the box, installs first pivot and second pivot in the box, installs intermeshing's first gear and second gear in first pivot and the second pivot, and the one end and the first pivot fixed connection of locking handle, the one end and the second pivot fixed connection of transmission swing arm, the other end of transmission swing arm is articulated with the one end of elasticity push rod, and the other end of elasticity push rod is articulated with one side of rotating part. The locking device has the advantages of simple structure, convenience in operation and control, small occupied space, strong adaptability and reliability in locking.

Description

Locking device for follow-up wheel of scanner

Technical Field

The utility model relates to a locking device, concretely relates to sweep and look into ware trailing wheel locking device for pipeline circumferential weld detects.

Background

In the field of petroleum and natural gas transportation, circumferential weld detection is often required to be carried out on pipelines so as to judge whether defects exist in welding seams. With the development of technology, pipeline girth weld detection systems based on ultrasonic waves are widely used. The scanner is used as a core component of the pipeline girth weld detection system and plays an important role in moving along the circumferential direction of the pipeline and detecting weld data. The scanning device runs by clamping the driving wheel and the following wheel on two sides of the circular track through the driving wheel and the following wheel which are arranged on the frame. However, the problems of complex structure, large occupied space, insecure locking and poor adaptability exist in the actual application of the follow-up wheel locking mechanism of the existing scanner, and the motion stability and the detection reliability of the scanner are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a scanning device follower wheel locking device, it has simple structure, controls the convenience, occupation space is little, strong adaptability, locking is reliable, the high advantage of security.

In order to solve the problems in the prior art, the utility model provides a locking device for the follower wheel of a scanner, which comprises a follower wheel component, a locking gear box, a locking handle, a transmission swing arm and an elastic push rod, wherein the follower wheel component comprises a supporting seat, an eccentric camshaft and a follower wheel, the supporting seat is fixed on a chassis base plate of the scanner, the eccentric camshaft comprises a rotating part and a follower shaft which are distributed up and down, the axis of the follower shaft deviates to one side relative to the rotating part, the rotating part is arranged in the supporting seat through a first bearing structure, and the follower wheel is arranged at the lower end of the follower shaft through a second bearing structure; the locking gear box comprises a box body fixed on a chassis base plate of the scanner, a first rotating shaft and a second rotating shaft are respectively arranged in the box body through an upper bearing and a lower bearing, a first gear and a second gear which are meshed with each other are correspondingly arranged on the first rotating shaft and the second rotating shaft, and the upper ends of the first rotating shaft and the second rotating shaft extend out of the box body; one end of the locking handle is fixedly connected with the upper end of the first rotating shaft, one end of the transmission swing arm is fixedly connected with the upper end of the second rotating shaft, the other end of the transmission swing arm is hinged to one end of the elastic push rod, and the other end of the elastic push rod is hinged to one side of the rotating part through the adapter.

Further, the utility model relates to a scanning ware trailing wheel locking device, wherein, elasticity push rod includes barrel, left pole, right pole and pressure spring, the end correspondence is fixed with left lid and right lid about the barrel, the right-hand member and the coaxial fixed connection of left lid of left pole, the left end of right pole passes the right lid and is fixed with the spring seat, the pressure spring is in the barrel, and the end correspondence roof pressure is on left lid and spring seat about the pressure spring.

Further, the utility model relates to a scanning ware trailing wheel locking device, wherein, the right-hand member of left pole is adorned soon and is being covered along the screw hole that the axis set up in a left side, and left pole top spin of left side lid is equipped with tight set nut, the spring seat passes through the left end of screw thread installation at the right pole.

Furthermore, the utility model relates to a locking device for the follower wheel of the scanner, wherein, the supporting seat comprises a flange and a mounting sleeve which are connected into a whole, a first flange cover is coaxially fixed on the flange, and a first limit platform is arranged at the lower end of the inner wall of the mounting sleeve; the lower end of the rotating part is provided with a second limiting table; the adapter comprises a cylindrical adapter seat, and a third limiting table is arranged on the peripheral wall of the adapter seat and is coaxially and fixedly connected with the rotating part; the first bearing structure comprises a first bearing and a second bearing which are sleeved between the rotating part and the mounting sleeve side by side, the upper ends of the inner ring and the outer ring of the first bearing are correspondingly pressed on the third limiting table and the first flange cover, and the lower ends of the inner ring and the outer ring of the second bearing are correspondingly pressed on the second limiting table and the first limiting table.

Further, the utility model relates to a scanning ware follower wheel locking device, wherein, the follower shaft coaxial fixation has the support column, is equipped with the spacing platform of fourth on the lower extreme perisporium of support column, the inner wall lower extreme of follower wheel is equipped with the spacing platform of fifth, and the top coaxial fixation of follower wheel has the second blind flange, the second bearing structure includes third bearing and the fourth bearing of cover side by side between follower wheel and support column, and the inner and outer lane upper end of third bearing corresponds the roof pressure and covers at follower shaft and second blind flange, and the inner and outer lane lower extreme of fourth bearing corresponds the roof pressure on the spacing platform of fourth and the spacing platform of fifth.

Further, the utility model relates to a scanning ware trailing wheel locking device, wherein, the support column passes through the screw thread and adorns soon at the follow-up epaxial, and the bottom of support column is equipped with interior hexagonal hole.

Further, the utility model relates to a scanning ware trailing wheel locking device, wherein, the adaptor is still fixed with the hinge post including fixing the rotatory swing arm on the adapter on the rotatory swing arm.

Further, the utility model relates to a scanning ware follower wheel locking device, wherein, the hinge post is in the rear side of rotatory swing arm for the rotating part axle center, the axle center of follower shaft is left or right partially for the rotating part.

Further, the utility model relates to a scanning ware trailing wheel locking device, wherein, the left end of left side pole and the right-hand member correspondence of right side pole are equipped with left hinge and right hinge.

Further, the utility model relates to a scanning ware trailing wheel locking device, wherein, the box includes the drain pan and passes through the apron of fix with screw on the drain pan, upper bearing and lower bearing correspond and clamp in the recess that sets up on drain pan and apron.

The utility model relates to a scanning ware trailing wheel locking device compares with prior art, has following advantage: the utility model discloses a set up follow-up wheel subassembly, locking gear box, locking handle, transmission swing arm and elastic push rod, make follow-up wheel subassembly set up supporting seat, eccentric camshaft and follow-up wheel, fix the supporting seat on scanner frame bottom plate, make eccentric camshaft set up rotating part and follow-up shaft that distribute from top to bottom, let the axle center of follow-up shaft incline towards one side for the rotating part, install the rotating part in the supporting seat through the first bearing structure, install the follow-up wheel at the lower extreme of follow-up shaft through the second bearing structure; the locking gear box is arranged in a box body fixed on a chassis base plate of the scanner, a first rotating shaft and a second rotating shaft are respectively arranged in the box body through an upper bearing and a lower bearing, a first gear and a second gear which are mutually meshed are correspondingly arranged on the first rotating shaft and the second rotating shaft, and the upper ends of the first rotating shaft and the second rotating shaft extend out of the box body; one end of the locking handle is fixedly connected with the upper end of the first rotating shaft, one end of the transmission swing arm is fixedly connected with the upper end of the second rotating shaft, the other end of the transmission swing arm is hinged to one end of the elastic push rod, and the other end of the elastic push rod is hinged to one side of the rotating part through the adapter. Therefore, the locking device for the follow-up wheel of the scanner has the advantages of simple structure, convenience in operation and control, small occupied space, strong adaptability, reliability in locking and high safety. In practical application, through controlling the locking handle can make first gear and second gear rotate relatively and drive the transmission swing arm rotatory, the rotary motion of transmission swing arm can produce the push-and-pull effect to the elastic push rod, and the push-and-pull action of elastic push rod can make eccentric camshaft use the rotating part to rotate as the axle, because of the axle center of follower spindle is partial to one side for the rotating part, the rotation of eccentric camshaft can make the follower wheel hug closely the track or break away from the track to realize the technical purpose of locking or unblock. When the locking device needs to be locked, the transmission swing arm generates a forward pushing effect on the elastic push rod by rotating the locking handle, the forward pushing action of the elastic push rod can drive the eccentric cam shaft to rotate and enable the follow-up wheel to be attached to the track, and at the moment, the locking handle should be rotated to the upper side of the chassis of the scanner frame, so that the space is saved; when the unlocking is needed, the locking handle is rotated reversely, so that the transmission swing arm generates a backward pulling effect on the elastic push rod, and the backward pulling action of the elastic push rod can drive the eccentric cam shaft to rotate reversely and enable the follow-up wheel to be separated from the track. The utility model takes the locking gear box as the locking transmission mechanism, and has the advantages of simple structure, reliable transmission and small occupied space; through the arrangement of the elastic push rod, the follow-up wheel can be always attached to the track under the action of elasticity during locking, and the locking reliability and the movement stability of the scanning device are improved.

The following wheel locking device of the scanner according to the present invention will be described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a front view of a locking device for a follower wheel of a scanner according to the present invention;

FIG. 2 is a top view of the follower wheel locking device of the scanner of the present invention;

FIG. 3 is a perspective view of a locking device for a follower wheel of a scanner of the present invention;

FIG. 4 is a front view of a follower wheel assembly of the follower wheel locking device of the scanner of the present invention;

FIG. 5 is a top view of a follower wheel assembly of the follower wheel locking device of the scanner of the present invention;

FIG. 6 is a perspective view of a follower wheel assembly in the locking device of the follower wheel of the scanner of the present invention;

FIG. 7 is a view taken along line A-A of FIG. 5;

FIG. 8 is a front view of a locking gear box in a locking device for a follower wheel of a scanner according to the present invention;

FIG. 9 is a view taken along line B-B of FIG. 8;

FIG. 10 is a top view of a locking gear box in a locking device for a follower wheel of a scanner according to the present invention;

FIG. 11 is a perspective view of a locking gear box in a locking device for a follower wheel of a scanner according to the present invention;

FIG. 12 is a front view of the elastic push rod of the follower wheel locking device of the scanner of the present invention;

fig. 13 is a top view of the elastic push rod in the locking device of the follower wheel of the scanner of the present invention;

FIG. 14 is a view from the C-C direction in FIG. 13;

fig. 15 is a perspective view of the elastic push rod in the locking device of the follower wheel of the scanner of the present invention.

Detailed Description

It should be noted that, in the present invention, the terms of upper, lower, left, right, front, rear and the like are only described according to the accompanying drawings, so as to facilitate understanding, and are not intended to limit the technical solution and the scope of the present invention.

Fig. 1 to 15 show a specific embodiment of a locking device for a follower wheel of a scanner, which comprises a follower wheel assembly 1, a locking gear box 2, a locking handle 3, a transmission swing arm 4 and an elastic push rod 5. The servo wheel assembly 1 is provided with a support base 11, an eccentric cam shaft 12 and a servo wheel 13, the support base 11 is fixed on a bottom plate of a scanner frame 9, the eccentric cam shaft 12 is provided with a rotating part 121 and a servo shaft 122 which are distributed up and down, the axis of the servo shaft 122 deviates to one side relative to the rotating part 121, the rotating part 121 is installed in the support base 11 through a first bearing structure, and the servo wheel 13 is installed at the lower end of the servo shaft 122 through a second bearing structure. The locking gear box 2 is arranged on a box body 21 fixed on a chassis base plate of the scanner, a first rotating shaft 24 and a second rotating shaft 25 are respectively arranged in the box body 21 through an upper bearing 22 and a lower bearing 23, a first gear 26 and a second gear 27 which are meshed with each other are correspondingly arranged on the first rotating shaft 24 and the second rotating shaft 25, and the upper ends of the first rotating shaft 24 and the second rotating shaft 25 extend out of the box body 21. Let the one end of locking handle 3 and the upper end fixed connection of first pivot 24, let the one end of transmission swing arm 4 and the upper end fixed connection of second pivot 25, let the other end of transmission swing arm 4 and the one end of elastic putter 5 articulated, let the other end of elastic putter 5 pass through the adaptor and articulate with one side of rotating part 121.

The locking device of the follow-up wheel of the scanner has the advantages of simple structure, convenience in operation and control, small occupied space, strong adaptability, reliability in locking and high safety. In practical application, the first gear 26 and the second gear 27 can be relatively rotated by operating the locking handle 3 to drive the transmission swing arm 4 to rotate, the rotation of the transmission swing arm 4 can generate a pushing and pulling action on the elastic push rod 5, the pushing and pulling action of the elastic push rod 5 can enable the eccentric camshaft 12 to rotate by taking the rotating part 121 as a shaft, and the rotation of the eccentric camshaft 12 can enable the follower wheel 13 to be attached to or detached from the track due to the deviation of the axis of the follower shaft 122 relative to the rotating part 121, so that the technical purpose of locking or unlocking can be realized. Specifically, when locking is needed, the transmission swing arm 4 generates a forward pushing action on the elastic push rod 5 by rotating the locking handle 3, the forward pushing action of the elastic push rod 5 can drive the eccentric cam shaft 12 to rotate and enable the follow-up wheel 13 to be attached to the track, and at the moment, the locking handle 3 should rotate to the upper side of the chassis base plate of the scanner so as to save space; when the unlocking is needed, the locking handle 3 is rotated reversely, so that the transmission swing arm 4 generates a back-pulling effect on the elastic push rod 5, and the back-pulling action of the elastic push rod 5 can drive the eccentric cam shaft 12 to rotate reversely and enable the follow-up wheel 13 to be separated from the track. The utility model takes the locking gear box 2 as the locking transmission mechanism, and has the advantages of simple structure, reliable transmission and small occupied space; through setting up elasticity push rod 5, can make follow-up wheel 13 hug closely on the track all the time under the effect of elasticity during locking, improved the reliability of locking and the stationarity of scanning ware motion. It should be noted that the forward pushing direction of the elastic push rod 5 should be the same as the biasing direction of the follower shaft 122, so as to ensure that the follower wheel 13 is pressed on the track instead of being far away from the track when locking; in practical application, a mechanism for limiting the locking handle 3 after locking is arranged on the scanning device frame so as to prevent the locking handle 3 from automatically rotating.

As an optimized scheme, the present embodiment adopts the following structural form for the elastic push rod 5: the device is provided with a cylinder body 51, a left rod 52, a right rod 53 and a pressure spring 54, wherein a left cover 511 and a right cover 512 are correspondingly fixed at the left end and the right end of the cylinder body 51, the right end of the left rod 52 is coaxially and fixedly connected with the left cover 511, the left end of the right rod 53 penetrates through the right cover 512 and is fixedly provided with a spring seat 531, the pressure spring 54 is arranged in the cylinder body 51, and the left end and the right end of the pressure spring 54 are correspondingly pressed on the left cover 511 and the spring seat 531. The elastic push rod 5 with the structure has the advantages of stable structure, easy preparation and strong applicability. In order to facilitate the removal and adjustment of the length, the present embodiment has the right end of the left rod 52 screwed into a threaded hole provided along the axis of the left cap 511, and has the tightening nut 521 screwed onto the left rod 52 on the left side of the left cap 511, and has the spring seat 531 screwed onto the left end of the right rod 53. The structure can realize the adjustment of the whole length of the elastic push rod 5 by controlling the screwing length of the left rod 52 into the left cover 511, thereby improving the practicability.

As a specific embodiment, the present invention provides the supporting seat 11 with the flange 111 and the mounting sleeve 112 connected as a whole, the first flange 14 is coaxially fixed on the flange 111, and the first limiting platform 113 is provided at the lower end of the inner wall of the mounting sleeve 112. Meanwhile, a second limit table 123 is arranged at the lower end of the rotating part 121, so that the adapter is provided with a cylindrical adapter 15, and the adapter 15 is provided with a third limit table 151 on the peripheral wall and coaxially and fixedly connected with the rotating part 121. And the first bearing structure is provided with a first bearing 124 and a second bearing 125 which are sleeved side by side between the rotating part 121 and the mounting sleeve 112, wherein the upper ends of the inner and outer races of the first bearing 124 are correspondingly pressed against the third limit stop 151 and the first flange cover 14, and the lower ends of the inner and outer races of the second bearing 125 are correspondingly pressed against the second limit stop 123 and the first limit stop 113. The device has the advantages of simple structure, convenient assembly and disassembly and stable action.

In the present invention, as a specific embodiment, the support column 16 is coaxially fixed to the lower end of the follower shaft 122, the fourth stopper 161 is provided on the lower end peripheral wall of the support column 16, the fifth stopper 131 is provided on the lower end of the inner wall of the follower wheel 13, and the second flange cover 17 is coaxially fixed to the top of the follower wheel 13. And the second bearing structure is provided with a third bearing 132 and a fourth bearing 133 which are sleeved between the follower wheel 13 and the support column 16 side by side, wherein the upper ends of the inner and outer rings of the third bearing 132 are correspondingly pressed against the follower shaft 122 and the second flange cover 17, and the lower ends of the inner and outer rings of the fourth bearing 133 are correspondingly pressed against the fourth limit table 161 and the fifth limit table 131. The arrangement also has the advantages of simple structure and stable action. To facilitate the mounting and dismounting, the present embodiment has the support post 16 screwed to the follower shaft 122, and a hexagonal socket 162 is provided at the bottom of the support post 16. As a specific implementation manner, the present invention further provides that the adaptor is provided with a rotary swing arm 18 fixed on the adaptor seat 15, and a hinge column 181 is provided on the rotary swing arm 18 so as to be hinged with the elastic push rod 5. In practical applications, the present invention generally makes the hinge column 181 be located at the rear side (the outer side relative to the track) of the rotating swing arm 18 relative to the axis of the rotating portion 121, and makes the axis of the follower shaft 122 be left or right relative to the rotating portion 121, so as to enhance the force application effect of the elastic pushing rod 5.

It should be noted that, in practical application, the left end of the left rod 52 and the right end of the right rod 53 of the present invention are correspondingly provided with the left hinge joint 522 and the right hinge joint 532, so as to facilitate the connection operation; the box body 21 adopts a structural form including a bottom case 211 and a cover 212, wherein the cover 212 is fixed on the bottom case 211 by screws, and the upper bearing 22 and the lower bearing 23 are correspondingly clamped in grooves provided on the bottom case 211 and the cover 212, so as to improve structural stability.

The above embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the present invention as defined by the claims.

Claims (10)

1. A locking device for a follow-up wheel of a scanner is characterized by comprising a follow-up wheel assembly (1), a locking gear box (2), a locking handle (3), a transmission swing arm (4) and an elastic push rod (5), wherein the follow-up wheel assembly (1) comprises a supporting seat (11), an eccentric cam shaft (12) and a follow-up wheel (13), the supporting seat (11) is fixed on a chassis of the scanner, the eccentric cam shaft (12) comprises a rotating part (121) and a follow-up shaft (122) which are vertically distributed, the axis of the follow-up shaft (122) deviates to one side relative to the rotating part (121), the rotating part (121) is installed in the supporting seat (11) through a first bearing structure, and the follow-up wheel (13) is installed at the lower end of the follow-up shaft (122) through a second bearing structure; the locking gear box (2) comprises a box body (21) fixed on a chassis base plate of the scanner, a first rotating shaft (24) and a second rotating shaft (25) are respectively installed in the box body (21) through an upper bearing (22) and a lower bearing (23), a first gear (26) and a second gear (27) which are meshed with each other are correspondingly installed on the first rotating shaft (24) and the second rotating shaft (25), and the upper ends of the first rotating shaft (24) and the second rotating shaft (25) extend out of the box body (21); the one end of locking handle (3) and the upper end fixed connection of first pivot (24), the one end of transmission swing arm (4) and the upper end fixed connection of second pivot (25), the other end of transmission swing arm (4) is articulated with the one end of elasticity push rod (5), and the other end of elasticity push rod (5) passes through the adaptor and articulates with one side of rotating part (121).

2. The locking device for the follower wheel of the scanner as defined in claim 1, wherein the elastic push rod (5) comprises a cylinder (51), a left rod (52), a right rod (53) and a pressure spring (54), a left cover (511) and a right cover (512) are correspondingly fixed at the left end and the right end of the cylinder (51), the right end of the left rod (52) is coaxially and fixedly connected with the left cover (511), the left end of the right rod (53) passes through the right cover (512) and is fixedly provided with a spring seat (531), the pressure spring (54) is arranged in the cylinder (51), and the left end and the right end of the pressure spring (54) are correspondingly pressed on the left cover (511) and the spring seat (531).

3. A scanner follower wheel locking device as defined in claim 2, wherein the right end of the left rod (52) is screwed into a threaded hole formed along the axis of the left cover (511), a fastening nut (521) is screwed onto the left rod (52) on the left side of the left cover (511), and the spring seat (531) is screwed onto the left end of the right rod (53).

4. A locking device for a follower wheel of a scanner as defined in claim 3, wherein the supporting base (11) comprises a flange (111) and a mounting sleeve (112) which are connected as a whole, the flange (111) is coaxially fixed with the first flange cover (14), and the lower end of the inner wall of the mounting sleeve (112) is provided with a first limit stop (113); the lower end of the rotating part (121) is provided with a second limiting table (123); the adapter comprises a cylindrical adapter seat (15), and a third limiting table (151) is arranged on the peripheral wall of the adapter seat (15) and is coaxially and fixedly connected with the rotating part (121); the first bearing structure comprises a first bearing (124) and a second bearing (125) which are sleeved between the rotating part (121) and the mounting sleeve (112) side by side, the upper ends of the inner ring and the outer ring of the first bearing (124) are correspondingly pressed on the third limiting table (151) and the first flange cover (14), and the lower ends of the inner ring and the outer ring of the second bearing (125) are correspondingly pressed on the second limiting table (123) and the first limiting table (113).

5. The locking device for the follower wheel of the scanner as defined in claim 4, wherein the follower shaft (122) is coaxially fixed with a support column (16), a fourth limit stop (161) is arranged on the peripheral wall of the lower end of the support column (16), a fifth limit stop (131) is arranged on the lower end of the inner wall of the follower wheel (13), a second flange cover (17) is coaxially fixed on the top of the follower wheel (13), the second bearing structure comprises a third bearing (132) and a fourth bearing (133) which are sleeved side by side between the follower wheel (13) and the support column (16), the upper ends of the inner ring and the outer ring of the third bearing (132) correspondingly press against the follower shaft (122) and the second flange cover (17), and the lower ends of the inner ring and the outer ring of the fourth bearing (133) correspondingly press against the fourth limit stop (161) and the fifth limit stop (131).

6. A scanner follower wheel locking device according to claim 5, characterised in that the support post (16) is screwed onto the follower shaft (122) and the base of the support post (16) is provided with a hexagonal socket (162).

7. A scanner follower wheel locking device according to claim 6, characterized in that the adapter further comprises a swivel swing arm (18) fixed to the adapter (15), the swivel swing arm (18) being fixed with a hinge post (181).

8. A scanner follower wheel locking device according to claim 7, wherein the hinge post (181) is located at the rear side of the swing arm (18) with respect to the axis of the rotary part (121), and the axis of the follower shaft (122) is shifted to the left or right with respect to the rotary part (121).

9. A scanner follower wheel locking device according to claim 8, wherein the left end of the left rod (52) and the right end of the right rod (53) are provided with a left hinge joint (522) and a right hinge joint (532) respectively.

10. A scanner follower wheel locking device according to claim 8, wherein the box body (21) comprises a bottom shell (211) and a cover plate (212) fixed on the bottom shell (211) by screws, and the upper bearing (22) and the lower bearing (23) are correspondingly clamped in grooves arranged on the bottom shell (211) and the cover plate (212).

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