CN113752179B

CN113752179B - Positioning tool for fixing bolt hole of bottom ring of water turbine

Info

Publication number: CN113752179B
Application number: CN202110951309.9A
Authority: CN
Inventors: 李少文; 桂劲松; 欧世强; 刘洋; 杨海星; 左军; 肖何; 肖迪
Original assignee: DATANG CHENCUN HYDROPOWER PLANT
Current assignee: Datang Anhui Power Generation Co ltd Chencun Hydropower Generation Branch
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2023-03-17
Anticipated expiration: 2041-08-18
Also published as: CN113752179A

Abstract

The invention discloses a positioning tool for a fixing bolt hole of a bottom ring of a water turbine, and relates to the technical field of auxiliary devices of the water turbine, which comprises a knocking handle, a connecting column, positioning rings and a positioning head, wherein the knocking handle is arranged on the top wall of the connecting column, a pair of positioning rings are arranged on the outer walls of the upper end and the lower end of the connecting column at intervals, the positioning rings are connected to the outer wall of the connecting column through a telescopic mechanism, an operator rotates a crank to drive the positioning rings on the two sides to be horizontally unfolded and to be close to the inner wall of a hole, and the bottom of the positioning head is propped against the bottom wall of the hole, at the moment, the end part of the positioning head is aligned to the center of the hole, so that the positioning difficulty of the center of the hole is greatly reduced, the accuracy error can be controlled within 1mm after the positioning by adopting the device, the problem of bottom ring mounting and positioning can be well solved, the bottom wall of the connecting column is connected with a connecting plate, the bottom of the connecting plate is connected with a mounting plate through an elastic cushion, and the positioning head is connected to the bottom of the mounting plate through a buffer mechanism.

Description

Positioning tool for fixing bolt hole of bottom ring of water turbine

Technical Field

The invention relates to the technical field of auxiliary devices of water turbines, in particular to a positioning tool for a fixing bolt hole of a bottom ring of a water turbine.

Background

When the water turbine generator set is subjected to reconstruction overhaul, the guide vane mounting position needs to be adjusted after a new bottom ring is replaced, and therefore the mounting position needs to be repositioned by the bottom ring. At present, a new bottom ring is hung in an installation position, the bottom ring is rotated to a preset installation position, a positioning sample punching hole is punched after the position is determined, and then the bottom ring is hung out to perform drilling and tapping work of a positioning screw hole according to the punched sample punching hole. However, because the diameter of the bottom ring fixing screw hole is large and the depth is deep, the center position of the screw hole cannot be accurately positioned by a common punching tool, if the adopted measuring and calculating method is adopted, a large error can be generated during measurement, and the position precision of the hole after drilling cannot be ensured.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a positioning tool for a fixing bolt hole of a bottom ring of a water turbine, the accuracy error can be controlled within 1mm after positioning, and the problem of bottom ring installation and positioning can be better solved.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a hydraulic turbine bottom ring fixing bolt hole positioning tool, is including strikeing handle, spliced pole, holding ring and location head, strikeing the handle and installing on the roof of spliced pole, separate on the upper and lower both ends outer wall of spliced pole simultaneously and be provided with a pair of holding ring, the holding ring passes through telescopic machanism and connects on the outer wall of spliced pole to be connected with the connecting plate on the diapire of spliced pole, the bottom of connecting plate is connected with the mounting panel through the cushion, wherein fixes a position the head and install the bottom at the mounting panel.

Preferably, telescopic machanism includes the worm wheel, worm and actuating lever, wherein the spliced pole has offered the circle chamber near the inside of holding ring, and the inside in circle chamber is provided with the worm wheel, the worm wheel is installed on the outer wall of transmission shaft, the transmission shaft rotates and installs on the upper and lower both sides wall in circle chamber, rotate on the outer wall of worm wheel simultaneously and install a pair of worm, wherein the worm is installed on the outer wall of lead screw, the lead screw rotates and installs on the left and right sides wall in circle chamber, and a side end of lead screw stretches out from the lateral wall of spliced pole, the drive block is installed to the screw thread on the end outer wall that stretches out of lead screw simultaneously, and rotate on the lateral wall of drive block and install the actuating lever, the other end of actuating lever rotates and installs on the inner wall of holding ring, wherein the holding ring is close to a side wall mounting of spliced pole has flexible connecting rod, flexible connecting rod's the other end is installed on the outer wall of spliced pole.

Preferably, the top of the knocking handle is internally provided with an inner cavity, the top of the transmission shaft extends into the inner cavity, the outer wall of the top of the transmission shaft is provided with a driven bevel gear, the outer wall of the driven bevel gear is meshed with a driving bevel gear, the driving bevel gear is arranged on the outer wall of the rotating shaft, the rotating shaft is rotatably arranged on the side wall of the inner cavity, the end part of the rotating shaft extends out of the outer wall of the knocking handle, and the extending end of the rotating shaft is connected with a crank.

Preferably, the mounting groove has been seted up on the diapire of mounting panel, wherein the bottom slidable mounting of location head is in the mounting groove, a pair of constant head tank has been seted up on the left and right sides wall of location head simultaneously, wherein slidable mounting has the locating lever in the constant head tank, and the inside set screw hole of locating lever, the threaded mounting has fixing bolt on the lateral wall that the location head is close to the constant head tank simultaneously, fixing bolt's tip passes from the threaded hole, thereby install the locating lever in the constant head tank, the top of locating lever is connected with buffer gear simultaneously, buffer gear connects on the diapire of mounting panel, thereby install the bottom at the mounting panel with the location head.

Preferably, buffer gear includes connecting rod and buffer spring, has seted up a pair of recess on the diapire of mounting panel simultaneously, and wherein the horizontal installation is equipped with the slide bar in the recess to slide on the outer wall of slide bar and press left and right sides slider two, rotate on the diapire of slider two simultaneously and install the connecting rod, the other end of connecting rod rotates and installs on the roof of connecting block, and slider two lateral wall of keeping away from the mounting groove installs buffer spring, buffer spring's the other end is installed on the lateral wall of recess, wherein buffer spring overlaps and establishes on the outer wall of slide bar.

Preferably, the locating ring is provided with a sliding groove on the inner wall of one side away from the driving rod, a first sliding block is arranged in the sliding groove in a sliding mode, the end portion of the first sliding block is rotatably arranged on the auxiliary rod, the other end of the auxiliary rod is rotatably arranged on the side wall of the fixed block, and the fixed block is arranged on the outer wall of the connecting column.

Preferably, a layer of friction pad is installed on one side wall of the positioning ring away from the connecting column.

Preferably, the top of the knocking handle is provided with a knocking plate.

Preferably, the outer wall of the knocking handle is sleeved with a ring of flexible pad.

Preferably, a retaining plate is mounted on one side wall of the lead screw close to the retaining ring.

Compared with the prior art, the technical scheme at least has the following beneficial effects:

among the above-mentioned scheme, be provided with the holding ring, the holding ring passes through telescopic machanism and installs on the outer wall of spliced pole, operating personnel rotates the crank, the holding ring that drives both sides carries out the level and expandes, press close to on the inner wall of hole, and push up the bottom of location head on the diapire of hole, the central point that the hole was aimed at promptly to the tip of location head this moment, greatly reduced the location degree of difficulty to the hole center, adopt this device location back accuracy error steerable within 1mm, the problem of solution bottom ring installation location that can be better, the bottom at the mounting panel is connected through buffer mechanism to the head of location simultaneously, at the location in-process of strikeing, cushion impact force through buffer spring, avoid the impact force to cause the damage to operating personnel hand, when the location head takes place to damage simultaneously, take out fixing bolt from the surface of location head, then take out the locating lever from the constant head, can dismantle the change to the location head, the replacement cost of equipment has significantly reduced, economic benefits is higher.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a top view of the retaining ring installation of the present invention;

FIG. 3 is an enlarged view of a portion of the present invention at A;

FIG. 4 is a schematic view of the internal structure of the knocking handle according to the present invention;

FIG. 5 is a schematic view of the positioning head installation of the present invention;

FIG. 6 is an enlarged view of a portion of the present invention at B;

fig. 7 is a partial enlarged view of the present invention at C.

As shown in the figure: 1. the device comprises a knocking handle, 2, a connecting column, 3, a positioning ring, 4, a connecting plate, 5, a mounting plate, 6, a positioning head, 7, a knocking plate, 8, a flexible sleeve, 9, a round cavity, 10, a worm wheel, 11, a worm, 12, a lead screw, 13, a driving block, 14, a driving rod, 15, a telescopic connecting rod, 16, an auxiliary rod, 17, a friction pad, 18, a transmission shaft, 19, a fixed block, 20, a sliding groove, 21, a first sliding block, 22, an inner cavity, 23, a driven bevel gear, 24, a driving bevel gear, 25, a rotating shaft, 26, a crank, 27, an elastic pad, 28, a mounting groove, 29, a groove, 30, a connecting rod, 31, a fixing bolt, 32, a second sliding block, 33, a sliding rod, 34, a buffer spring, 35, a positioning rod, 36, a positioning groove, 37, a threaded hole, 38, a connecting block, 39 and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-7, the invention provides a positioning tool for a fixing bolt hole of a bottom ring of a water turbine, which comprises a knocking handle 1, a connecting column 2, positioning rings 3 and positioning heads 6, wherein the knocking handle 1 is installed on the top wall of the connecting column 2, a pair of positioning rings 3 are arranged on the outer walls of the upper end and the lower end of the connecting column 2 at intervals, the positioning rings 3 are connected to the outer wall of the connecting column 2 through telescopic mechanisms, a connecting plate 4 is connected to the bottom wall of the connecting column 2, the bottom of the connecting plate 4 is connected with a mounting plate 5 through an elastic pad 27, the impact force is buffered through the elastic pad 27, the positioning heads 6 are installed at the bottom of the mounting plate 5, a knocking plate 7 is installed at the top of the knocking handle 1, the contact area between the knocking handle 1 and a hammer head is increased through the knocking plate 7, the protection can be provided for a hand part, a circle of flexible pad 8 is sleeved on the outer wall of the knocking handle 1, and the palm is protected through the non-slip pad 8, so that great friction in the knocking process and the palm is avoided.

As shown in fig. 2-3, the telescoping mechanism includes a worm wheel 10, a worm 11 and a driving rod 14, wherein a circular cavity 9 is formed inside the connecting column 2 close to the positioning ring 3, the worm wheel 10 is arranged inside the circular cavity 9, the worm wheel 10 is installed on the outer wall of the driving shaft 18, the driving shaft 18 is rotatably installed on the upper and lower side walls of the circular cavity 9, meanwhile, a pair of worms 11 is rotatably installed on the outer wall of the worm wheel 10, wherein the worms 11 are installed on the outer wall of the lead screw 12, the lead screw 12 is rotatably installed on the left and right side walls of the circular cavity 9, one side end of the lead screw 12 extends out from the side wall of the connecting column 2, meanwhile, a driving block 13 is threadedly installed on the outer wall of the extending end of the lead screw 12, and the driving rod 14 is rotatably installed on the side wall of the driving block 13, the other end of the driving rod 14 is rotatably installed on the inner wall of the positioning ring 3, wherein a side wall of the positioning ring 3 close to the connecting column 2 is provided with a telescoping connecting rod 15, the other end of the telescoping rod 15 is installed on the outer wall of the connecting column 2, the positioning ring 3 assists in positioning of the positioning ring 3, so that the positioning ring 3 performs horizontal movement under the driving of the lead screw 12, thereby adjusting the distance between the two positioning rings 3, and the center of the hole is automatically positioned.

Preferably, a sliding groove 20 is formed in the inner wall of one side of the positioning ring 3, which is far away from the driving rod 14, a first sliding block 20 is slidably mounted in the sliding groove 20, meanwhile, an auxiliary rod 16 is rotatably mounted at the end of the first sliding block 20, the other end of the auxiliary rod 16 is rotatably mounted on the side wall of a fixed block 19, and the fixed block 19 is mounted on the outer wall of the connecting column 2; at holding ring 3 horizontal migration in-process, drive auxiliary rod 16 and slide along spout 20, carry out the auxiliary stay through auxiliary rod 16 to holding ring 3, avoid knocking the in-process, holding ring 3 takes place the phenomenon that drops.

Preferably, a layer of friction pad 17 is installed on one side wall of the positioning ring 3 away from the connecting column 2, and the friction force between the positioning ring 3 and the inner wall of the hole is reduced through the friction pad 17, so that the up-and-down movement of the device is smoother.

As shown in fig. 4, an inner cavity 22 is formed inside the top end of the knocking handle 1, wherein the top end of the transmission shaft 18 extends into the inner cavity 22, a driven bevel gear 23 is mounted on the outer wall of the top end of the transmission shaft 18, and a drive bevel gear 24 is meshed with the outer wall of the driven bevel gear 23, wherein the drive bevel gear 24 is mounted on the outer wall of a rotating shaft 25, the rotating shaft 25 is rotatably mounted on the side wall of the inner cavity 22, and the end portion of the rotating shaft 25 extends out of the outer wall of the knocking handle 1, wherein the extending end of the rotating shaft 25 is connected with a crank 26, so that the transmission shaft 18 is driven to rotate by the crank 26, and the operation is more convenient.

As shown in fig. 5-6, a mounting groove 28 is formed in the bottom wall of the mounting plate 5, wherein the bottom of the positioning head 6 is slidably mounted in the mounting groove 28, a pair of positioning grooves 36 is formed in the left and right side walls of the positioning head 6, a positioning rod 35 is slidably mounted in the positioning groove 36, a threaded hole 37 is formed in the positioning rod 35, a fixing bolt 31 is threadedly mounted on a side wall of the positioning head 6 close to the positioning groove 36, the end of the fixing bolt 31 passes through the threaded hole 37, so that the positioning rod 35 is mounted in the positioning groove 28, and meanwhile, the top end of the positioning rod 35 is connected with a buffer mechanism which is connected to the bottom wall of the mounting plate 5, so that the positioning head 6 is mounted at the bottom of the mounting plate 5.

The buffer mechanism comprises a connecting rod 30 and a buffer spring 34, a pair of grooves 29 are formed in the bottom wall of the mounting plate 5, a sliding rod 33 is horizontally installed in each groove 29, a left sliding block 32 and a right sliding block 32 are slidably arranged on the outer wall of each sliding rod 33, the connecting rod 30 is rotatably installed on the bottom wall of each sliding block 32, the other end of each connecting rod 30 is rotatably installed on the top wall of each connecting block 38, the buffer spring 34 is installed on one side wall, far away from the corresponding mounting groove 28, of each sliding block 32, the other end of each buffer spring 34 is installed on the corresponding side wall of each groove 29, each buffer spring 34 is sleeved on the outer wall of each sliding rod 33, the buffer springs 34 are guaranteed to horizontally stretch and retract through the sliding rods 33, and the buffer springs 34 are prevented from being horizontally broken; at knocking the location in-process, cushion impact force through buffer spring 34, avoid the impact force to cause the damage to operating personnel hand, when the locating head 6 takes place to damage simultaneously, take out fixing bolt 31 from the surface of locating head 6, then take out locating lever 35 from locating groove 36, can dismantle the change to locating head 6, the replacement cost of the equipment that has significantly reduced, economic benefits is higher.

Preferably, a limiting plate 39 is installed on one side wall of the screw 12 close to the limiting ring 3, and the driving block 13 is limited by the limiting plate 39 in an auxiliary manner, so that the driving block 13 is prevented from sliding out of the end of the screw 12.

The working process of the invention is as follows:

at first stretch into spliced pole 2 in the hole that needs the location, then operating personnel rotates crank 26, the holding ring 3 that drives both sides carries out the level and expandes, press close to on the inner wall in hole, and push up the bottom of location head 6 on the diapire in hole, the central point that the hole was aimed at promptly to the tip of location head 6 this moment puts, greatly reduced the location degree of difficulty to the hole center, and the accuracy error is steerable within 1mm after the location, the problem of solution bottom ring erection site that can be better, then can strike and strike 7 drive arrangement of board and shake from top to bottom, drill the location to the hole diapire, it is more convenient to operate, and the suitability is stronger.

Claims

1. Hydraulic turbine bottom ring fixing bolt hole positioning tool, including strikeing handle (1), spliced pole (2), holding ring (3) and location head (6), its characterized in that: the knocking handle (1) is installed on the top wall of the connecting column (2), a pair of positioning rings (3) is arranged on the outer walls of the upper end and the lower end of the connecting column (2), the positioning rings (3) are connected to the outer wall of the connecting column (2) through a telescopic mechanism, the bottom wall of the connecting column (2) is connected with a connecting plate (4), the bottom of the connecting plate (4) is connected with a mounting plate (5) through an elastic pad (27), and a positioning head (6) is installed at the bottom of the mounting plate (5);

wherein: the telescopic mechanism comprises a worm wheel (10), a worm (11) and a driving rod (14), wherein a round cavity (9) is formed in the connecting column (2) close to the positioning ring (3), the worm wheel (10) is arranged in the round cavity (9), the worm wheel (10) is installed on the outer wall of a transmission shaft (18), the transmission shaft (18) is rotatably installed on the upper side wall and the lower side wall of the round cavity (9), meanwhile, a pair of worms (11) is rotatably installed on the outer wall of the worm wheel (10), the worm (11) is installed on the outer wall of a lead screw (12), the lead screw (12) is rotatably installed on the left side wall and the right side wall of the round cavity (9), one side end of the lead screw (12) extends out of the side wall of the connecting column (2), a driving block (13) is installed on the outer wall of the extending end of the lead screw (12) in a threaded manner, the driving rod (14) is rotatably installed on the side wall of the driving block (13), the other end of the driving rod (14) is rotatably installed on the inner wall of the positioning ring (3), a telescopic connecting column (2) close to the side wall of the positioning ring (3) is installed with a telescopic connecting rod (15), and the other end of the telescopic connecting column (15) is installed on the outer wall of the connecting column (2);

an inner cavity (22) is formed in the top end of the knocking handle (1), the top end of the transmission shaft (18) extends into the inner cavity (22), meanwhile, a driven bevel gear (23) is installed on the outer wall of the top end of the transmission shaft (18), a driving bevel gear (24) is meshed with the outer wall of the driven bevel gear (23), the driving bevel gear (24) is installed on the outer wall of a rotating shaft (25), meanwhile, the rotating shaft (25) is rotatably installed on the side wall of the inner cavity (22), the end portion of the rotating shaft (25) extends out of the outer wall of the knocking handle (1), and the extending end of the rotating shaft (25) is connected with a crank (26);

the mounting structure comprises a mounting plate (5), a mounting groove (28) is formed in the bottom wall of the mounting plate (5), the bottom of a positioning head (6) is slidably mounted in the mounting groove (28), a pair of positioning grooves (36) is formed in the left side wall and the right side wall of the positioning head (6), a positioning rod (35) is slidably mounted in the positioning grooves (36), a threaded hole (37) is formed in the positioning rod (35), a fixing bolt (31) is threadedly mounted on one side wall, close to the positioning groove (36), of the positioning head (6), the end portion of the fixing bolt (31) penetrates through the threaded hole (37), the positioning rod (35) is mounted in the positioning groove (36), a buffer mechanism is connected to the top end of the positioning rod (35), the buffer mechanism is connected to the bottom wall of the mounting plate (5), and the positioning head (6) is mounted at the bottom of the mounting plate (5);

the buffer mechanism comprises a connecting rod (30) and a buffer spring (34), a pair of grooves (29) is formed in the bottom wall of the mounting plate (5), a sliding rod (33) is horizontally installed in each groove (29), a second sliding block (32) is installed on the outer wall of each sliding rod (33) in a sliding mode, the connecting rod (30) is installed on the bottom wall of the second sliding block (32) in a rotating mode, the other end of each connecting rod (30) is installed on the top wall of the connecting block (38) in a rotating mode, the buffer spring (34) is installed on one side wall, far away from the mounting groove (28), of the second sliding block (32), the other end of each buffer spring (34) is installed on the side wall of each groove (29), and the buffer spring (34) is sleeved on the outer wall of the corresponding sliding rod (33);

the inner wall of one side, away from the driving rod (14), of the positioning ring (3) is provided with a sliding groove (20), a first sliding block (21) is installed in the sliding groove (20) in a sliding mode, meanwhile, the end portion of the first sliding block (21) is rotatably provided with an auxiliary rod (16), the other end of the auxiliary rod (16) is rotatably installed on the side wall of a fixing block (19), and the fixing block (19) is installed on the outer wall of the connecting column (2);

wherein: a layer of friction pad (17) is arranged on one side wall of the positioning ring (3) far away from the connecting column (2);

wherein the top of the knocking handle (1) is provided with a knocking plate (7);

wherein a circle of flexible pad (8) is sleeved on the outer wall of the knocking handle (1);

wherein, a limit plate (39) is arranged on one side wall of the screw rod (12) close to the limit ring (3).