CN-224229219-U - Positioning device for positioning gear of gearbox

CN224229219UCN 224229219 UCN224229219 UCN 224229219UCN-224229219-U

Abstract

The utility model relates to the technical field of gear limiting devices of gearboxes, in particular to a positioning device for positioning gears of gearboxes, which comprises a gearbox body, a connecting rod, a speed changing rotating shaft, a positioning box body, a limiting cylinder piece and a positioning shaft piece, wherein the positioning box body is arranged on the outer side wall of the gearbox body, which is close to the connecting rod, the side wall of the positioning box body is provided with a first limiting hole and a second limiting hole, the left side and the right side of the connecting rod are respectively provided with a blocking groove, the limiting cylinder piece is arranged on the left side and the right side of the connecting rod through the blocking grooves, the limiting cylinder piece comprises a sliding convex plate and a limiting sleeve, the circumferential side wall of the other end of the limiting sleeve is provided with a limiting blocking groove, the limiting blocking groove comprises a pushing section and a blocking section, the positioning shaft piece comprises a rotating handle and a plug shaft, and the limiting block is arranged on the circumferential outer side of the plug shaft and matched with the limiting blocking groove. The connecting rod is mechanically fixed, so that mechanical locking is realized, the faults and production accidents of the gearbox are avoided, and the labor intensity of personnel for maintaining the gearbox is reduced.

Inventors

CAO FUJUN
LU PENG
REN WENZHI
KANG JUNHAO
LI XUQIAN

Assignees

吕梁建龙实业有限公司

Dates

Publication Date: 20260512
Application Date: 20250603

Claims (6)

1. The utility model provides a positioner for fixing a position gearbox position, includes gearbox body, connecting rod and speed change axis of rotation, the one end of connecting rod with the one end of speed change axis of rotation is connected, the speed change axis of rotation runs through the gearbox body, its characterized in that still includes: The positioning box body is arranged on the outer side wall, close to the connecting rod, of the gearbox body, a hollow cavity is arranged in the positioning box body, a first limiting hole and a second limiting hole are formed in the side wall of the positioning box body, the first limiting hole and the second limiting hole are communicated with the hollow cavity, a fixing plate is arranged at the bottom of the positioning box body, and a bolt hole for being matched with a bolt is formed in the fixing plate; The limiting cylinder part is arranged on the left side and the right side of the connecting rod, a plurality of first locking holes are formed in the locking grooves, the limiting cylinder part is arranged on the left side and the right side of the connecting rod through the locking grooves, the limiting cylinder part comprises a sliding convex plate and a limiting sleeve, one end of the sliding convex plate is matched with the locking grooves, the circumferential side wall at one end of the limiting sleeve is arranged at the other end of the sliding convex plate, a limiting clamping groove is formed in the circumferential side wall at the other end of the limiting sleeve, the limiting clamping groove comprises a pushing section and a locking section, the pushing section is a linear groove, the locking section is an annular groove, the locking section is arranged at one end of the pushing section and is close to the sliding convex plate, a plurality of second locking holes are formed in one end of the sliding convex plate, and the diameter of the first locking holes is identical to that of the second locking holes. The positioning shaft piece comprises a rotating handle and an inserting shaft, wherein one end of the inserting shaft is provided with the rotating handle, the outer side of the circumference of the inserting shaft is provided with a limiting block, the limiting block is matched with the limiting clamping groove, and the limiting block is close to the rotating handle.
2. The positioning device for positioning a gear of a gearbox according to claim 1, further comprising a secondary locking shaft, wherein the circumferential outer wall of the limiting sleeve, which is close to the sliding convex plate, and the circumferential outer wall of the inserting shaft are provided with secondary locking holes, the secondary locking holes of the limiting sleeve and the secondary locking holes of the inserting shaft are positioned on the same vertical axis, and the secondary locking shaft is sequentially inserted into the secondary locking holes of the limiting sleeve and the secondary locking holes of the inserting shaft.
3. The positioning device for positioning a gear of a gearbox according to claim 1, further comprising an auxiliary linkage member, wherein the auxiliary linkage member is arranged in a hollow cavity of the positioning box, the auxiliary linkage member comprises a first-gear compression member and a second-gear compression member, the first-gear compression member is positioned on the same side of the first limiting hole, the second-gear compression member is positioned on the same side of the second limiting hole, the first-gear compression member has the same structure as the second-gear compression member, the first-gear compression member comprises a plurality of guide posts, a compression plate and a compression spring, the guide posts are arranged in the hollow cavity of the positioning box, the guide posts are symmetrically arranged on two sides of the first limiting hole, the compression plate is arranged in the hollow cavity of the positioning box in a sliding mode through the guide posts, the compression spring is sleeved on the guide posts, one end of the compression spring is connected with one end of the compression plate, and the other end of the compression spring is connected with the inner wall of the positioning box, which is far away from the first limiting hole, of the hollow cavity.
4. A positioning device for positioning a gear of a transmission according to claim 3, further comprising a sensing limiter comprising a first contact post, a primary proximity sensor, and a cushion pad, the cushion pad being disposed on an inner wall of the cavity in the positioning housing remote from the first limiting aperture, the primary proximity sensor being disposed on one side of the cushion pad, the first contact post being disposed on one end of the compression plate, the first contact post being mated with the primary proximity sensor.
5. The positioning device for positioning a gear of a transmission according to claim 4, further comprising a contact switch member including a plurality of indicator lamps, a second contact post and a second proximity sensor, the second proximity sensor being disposed on the other side of the cushion pad, the second contact post being disposed at one end of the compression plate, the second contact post being engaged with the second proximity sensor, the plurality of indicator lamps being disposed on an outer wall of the positioning case adjacent to the first limiting hole and the second limiting hole, respectively, the indicator lamps being engaged with the second proximity sensor.
6. The positioning device for positioning a gear of a transmission according to claim 1, further comprising a chain, one end of the chain being fixedly provided on an outer wall of the positioning case, and the other end of the chain being fixedly provided on the rotation handle.

Description

Positioning device for positioning gear of gearbox Technical Field The utility model relates to the technical field of gear limiting devices of gearboxes, in particular to a positioning device for positioning gears of gearboxes. Background The gearbox is applied to various scenes, and in steel smelting, the gearbox is arranged in a rolling mill set to increase the rotating speed of a roller, and the specific working principle of the gearbox is to realize the speed increasing function by means of gears which are orderly arranged on a gear shaft inside. The user operates the gearbox in the rolling mill set, as shown in fig. 1, mainly depends on the expansion and contraction control connecting rod of the hydraulic cylinder to rotate, when the piston rod of the hydraulic cylinder stretches out, the piston rod pushes the connecting rod to rotate, the connecting rod drives a gear shaft in the gearbox to enable the gearbox to be in a low-speed gear state, and when the piston rod of the hydraulic cylinder stretches back, the piston rod pulls the connecting rod to rotate, the connecting rod drives the gear shaft in the gearbox to enable the gearbox to be switched to a high-speed gear; In field production, when the product is large-size steel grade, the gearbox of the rolling mill unit needs to be adjusted to a low-speed gear, namely, the piston rod of the hydraulic cylinder stretches out, and the piston rod pushes the connecting rod to rotate, so that the bottom of the connecting rod can trigger a low-speed gear signal, and the gearbox is enabled to stably operate in the low-speed gear. Disclosure of utility model The utility model provides a positioning device for positioning gears of a gearbox, which mechanically fixes a connecting rod driven by a piston of a hydraulic cylinder when the gearbox is in different gears, realizes mechanical locking, prevents the piston of the hydraulic cylinder from retreating to control the movement of the connecting rod, avoids the faults and production accidents of the gearbox, and reduces the labor intensity of personnel for maintaining the gearbox. In order to achieve the above object, the present utility model provides a positioning device for positioning a gear of a gearbox, including a gearbox body, a connecting rod, and a speed-changing rotating shaft, wherein one end of the connecting rod is connected with one end of the speed-changing rotating shaft, and the speed-changing rotating shaft penetrates through the gearbox body, the positioning device is characterized by further comprising: The positioning box body is arranged on the outer side wall, close to the connecting rod, of the gearbox body, a hollow cavity is arranged in the positioning box body, a first limiting hole and a second limiting hole are formed in the side wall of the positioning box body, the first limiting hole and the second limiting hole are communicated with the hollow cavity, a fixing plate is arranged at the bottom of the positioning box body, and a bolt hole for being matched with a bolt is formed in the fixing plate; The limiting cylinder part is arranged on the left side and the right side of the connecting rod, a plurality of first locking holes are formed in the locking grooves, the limiting cylinder part is arranged on the left side and the right side of the connecting rod through the locking grooves, the limiting cylinder part comprises a sliding convex plate and a limiting sleeve, one end of the sliding convex plate is matched with the locking grooves, the circumferential side wall at one end of the limiting sleeve is arranged at the other end of the sliding convex plate, a limiting clamping groove is formed in the circumferential side wall at the other end of the limiting sleeve, the limiting clamping groove comprises a pushing section and a locking section, the pushing section is a linear groove, the locking section is an annular groove, the locking section is arranged at one end of the pushing section and is close to the sliding convex plate, a plurality of second locking holes are formed in one end of the sliding convex plate, and the diameter of the first locking holes is identical to that of the second locking holes. The positioning shaft piece comprises a rotating handle and an inserting shaft, wherein one end of the inserting shaft is provided with the rotating handle, the outer side of the circumference of the inserting shaft is provided with a limiting block, the limiting block is matched with the limiting clamping groove, and the limiting block is close to the rotating handle. Further, the positioning device for positioning the gear of the gearbox further comprises a secondary locking shaft, the limiting sleeve is close to the circumferential outer wall of the sliding convex plate and the circumferential outer wall of the inserting shaft is provided with secondary locking holes, the secondary locking holes of the limiting sleeve and the secondary locking holes of the inserting shaft