Steel bar anchoring plate mounting machine for nuclear power

Abstract

The utility model provides a steel bar anchoring plate installing machine for nuclear power. The steel bar anchoring plate installing machine comprises a motor, an impact assembly and a tightening assembly which are sequentially and coaxially connected from back to front. The tightening assembly comprises a square shaft with a pair of tail wings at the rear end, a sleeve head is fixedly installed at the front end of the square shaft, and an inner hexagon matched with a steel bar anchoring plate is arranged at the front end of the sleeve head. The motor is used for driving the impact assembly to rotate, the impact assembly is used for generating impact on the empennage and transmitting rotation torque to the square shaft, and the square shaft drives the sleeve head to rotate to tighten the anchoring plate. The device is safe and reliable to use, and the steel bar anchoring plate can be quickly screwed and installed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection and anchoring, in particular to a steel bar anchor plate installation machine for nuclear power. Background Art

[0002] Steel bar anchor plates are suitable for mechanical anchoring of hot-rolled ribbed steel bars in concrete structures. The main application scopes are: using steel bar anchor plates to replace traditional bent bars can be used in beam-column joints of frame structures; replacing traditional bent bars and stirrups for supporting beams and supports; used for anchoring steel bars in concrete structures such as bridges, hydraulic structures, subways, tunnels, and nuclear power plants; used as fasteners for steel bar anchor rods (or tie rods), etc. Steel bar anchor plates have been widely used in nuclear power plant projects, water conservancy and hydropower, and house construction.

[0003] At present, steel bar anchor plates in nuclear power plant projects are mostly tightened and installed using steel bar wrenches. The torque required for anchor plates of different specifications is different. This installation method of anchor plates has the following problems: 1) The installation efficiency is low, which affects the progress of the construction period; 2) The required torque value is large, the labor intensity of workers is high, they are prone to fatigue, and it is easy to cause safety accidents; 3) It is difficult to maintain consistent installation quality; 4) The steel bar wrench can easily scratch the surface of the anchor plate.

[0004] In view of this, there is an urgent need for a tool for safely, reliably and quickly tightening and installing the steel bar anchor plate to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a nuclear power steel bar anchor plate installation machine in view of the deficiencies of the prior art.

[0006] In order to solve the above technical problems, the present invention includes:

[0007] A steel bar anchor plate installation machine for nuclear power, comprising a motor, an impact assembly and a tightening assembly coaxially connected in sequence from back to front; the tightening assembly comprises a square shaft with a pair of tail wings at the rear end, a sleeve is fixedly mounted at the front end of the square shaft, and the front end of the sleeve has an inner hexagon that matches the steel bar anchor plate; the motor is used to drive the impact assembly to rotate, the impact assembly is used to generate an impact on the tail wing and transmit a rotational torque to the square shaft, and the square shaft drives the sleeve to rotate to tighten the anchor plate.

[0008] Furthermore, the motor includes a stator housing, a stator and carbon brushes installed inside the stator housing, and a rotor installed inside the stator, and a sun gear is provided at the front end of the rotating shaft of the rotor.

[0009] Furthermore, a rear handle is fixedly connected to the rear end of the stator housing, an external power input switch is provided on the inner side of the rear handle, and the external power input switch is electrically connected to the carbon brush.

[0010] Furthermore, the impact assembly includes a front housing and a main shaft rotatably arranged in the front housing, a planetary wheel carrier is fixedly arranged at the rear end of the main shaft, a plurality of planetary wheels are mounted on the planetary wheel carrier, the sun gear extends forward between the plurality of planetary wheels and meshes with them, an inner gear ring is fixedly arranged inside the front housing and located on the periphery of the plurality of planetary wheels and meshes with them; an impact block and a compression spring are sleeved at the front end of the main shaft, the impact block is a hollow structure, and its inner cavity is a stepped cylinder with a thin front end and a thick rear end, and the compression spring is located in the thick cavity of the impact block; two V-shaped grooves are symmetrically arranged on the inner wall of the thin cavity of the impact block, and two herringbone grooves are correspondingly symmetrically arranged on the front end outer wall of the main shaft, the front end of the main shaft is inserted in the thin cavity of the impact block and is rotatably connected by two balls, and the balls are located in the herringbone grooves and the corresponding V-shaped grooves; a pair of impact wings are symmetrically arranged along the radial direction on the front end surface of the impact block; the tail wing is located between the two impact wings.

[0011] Furthermore, two pin shaft holes and two planetary wheel holes are symmetrically arranged on the planetary wheel carrier, which are used to install the planetary wheels through the pin shafts.

[0012] Furthermore, an intermediate housing is fixedly arranged between the front housing and the stator housing; two front and rear bearings are arranged in the intermediate housing, and the rear end of the main shaft and the rotating shaft of the rotor are respectively inserted into the inner rings of the two bearings.

[0013] Furthermore, the front end of the square shaft is an outer square for mounting a sleeve; the rear end of the square shaft is an optical axis, and the optical axis is inserted into a guide sleeve, and the guide sleeve is fixedly arranged in the front end opening of the front shell.

[0014] Furthermore, the sleeve head includes a sleeve; the front end of the sleeve is an inner hexagonal shape, and the rear end of the sleeve is an inner square shape that matches the outer square shape.

[0015] Furthermore, the sleeve also includes a fixing pin and a fixing ring; an annular groove is provided on the outer wall at the rear end of the sleeve, a through pin hole is provided in the annular groove along the radial direction of the sleeve, and a through hole is correspondingly provided on the outer square, and the through pin hole and the through hole are used to fix the sleeve and the square shaft together with the fixing pin; the fixing ring is an elastic rubber ring, which is sleeved on the annular groove to prevent the fixing pin from falling out.

[0016] Furthermore, a handle is fixedly connected to the top of the front shell.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a steel bar anchor plate installation machine for nuclear power, which uses impact to realize the tightening installation of the steel bar anchor plate, has no counter torque, and is safer to operate; because the installation of the anchor plate relies on the impact time control to control the torque size, the torque value of the anchor plates installed at the same time is the same, ensuring the installation quality; the tightening and installation efficiency of this installation machine is significantly higher than that of the steel bar wrench, which can effectively shorten the nuclear power construction period; this installation machine is simple to operate, can greatly reduce the labor intensity of workers, and improve operational safety. The used sleeve is an inner hexagonal head, which can be well matched with the outer hexagonal head of the anchor plate. When tightening and installing the anchor plate, the sleeve contacts the six sides of the anchor plate and will not damage the surface of the anchor plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the installation machine of the utility model;

[0020] Figure 2 It is a cross-sectional view of the installation machine of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the square shaft of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the utility model sleeve;

[0023] Figure 5 It is a cross-sectional view of the sleeve of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the impact block of the utility model;

[0025] Figure 7 It is a structural schematic diagram of the planetary gear carrier of the utility model.

[0026] In the figure: 1, sleeve, 11, sleeve, 12, fixing pin, 13, fixing ring, 21, main shaft, 22, guide sleeve, 23, ball, 24, impact block, 25, compression spring, 26, planetary gear carrier, 27, planetary gear, 28, pin shaft, 29, inner ring gear, 30, rotor, 31, stator, 32, carbon brush, 33, rear handle, 34, switch, 35, stator housing, 36, intermediate housing, 37, handle, 38, front housing, 4, square shaft, 41, outer square, 42, through hole, 43, optical axis, 44, tail wing, 111, inner hexagon, 112, inner square, 113, pin hole, 114, annular groove, 241, impact wing, 242, impact surface, 243, V-groove, 211, herringbone groove, 261, pin shaft hole, 262, planetary gear hole. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Those skilled in the art should understand that the embodiments are only intended to help understand the present invention and should not be considered as specific limitations of the present invention.

[0028] like Figure 1-7 As shown, the utility model provides a nuclear power steel bar anchor plate installation machine, including a motor, an impact assembly and a tightening assembly coaxially connected in sequence from back to front; the tightening assembly includes a square shaft 4 with a pair of tail wings 44 at the rear end, a sleeve 1 is fixedly installed at the front end of the square shaft 4, and the front end of the sleeve 1 has a hexagonal socket 111 adapted to the anchor plate 14; the motor is used to drive the impact assembly to rotate, the impact assembly is used to generate an impact on the tail wings 44 and transmit a rotational torque to the square shaft 4, the square shaft 4 drives the sleeve 1 to rotate, and tightens the anchor plate 14.

[0029] The front end of the square shaft 4 is the outer square 41, which is used to install the sleeve head 1; the rear end of the square shaft 4 is the optical axis 43, and the optical axis 43 is inserted in the guide sleeve 22, and the guide sleeve 22 is fixedly set in the front end opening of the front shell 38, and the guide sleeve 22 plays a role of rotational support for the optical axis 43.

[0030] The sleeve 1 includes a sleeve 11, a fixing pin 12 and a fixing ring 13; the front end of the sleeve 11 is an inner hexagon 111, and the rear end of the sleeve 11 is an inner square 112 adapted to the outer square 41. An annular groove 114 is provided on the outer wall of the rear end of the sleeve 11, and a through pin hole 113 is provided in the annular groove 114 along the radial direction of the sleeve 11, and a through hole 42 is correspondingly provided on the outer square 41. The through pin hole 113 and the through hole 42 are used to fix the sleeve 1 and the square shaft 4 together by using the fixing pin 12; the fixing ring 13 is an elastic rubber ring, which is sleeved in the annular groove 114 to prevent the fixing pin 12 from falling out.

[0031] The motor includes a stator housing 35, a stator 31 and a carbon brush 32 installed inside the stator housing 35, and a rotor 30 installed inside the stator 31. A sun gear is provided at the front end of the rotating shaft of the rotor 30. A rear handle 33 is fixedly connected to the rear end of the stator housing 35, and an external power input switch 34 is provided inside the rear handle 33, and the external power input switch 34 is electrically connected to the carbon brush 32.

[0032] The impact assembly includes a front housing 38 and a main shaft 21 rotatably arranged in the front housing 38, and a handle 37 is fixedly connected to the top of the front housing 38. A planetary wheel carrier 26 is fixedly arranged at the rear end of the main shaft 21, and a plurality of planetary wheels 27 are mounted on the planetary wheel carrier 26. The sun gear extends forward to between the plurality of planetary wheels 27 and meshes with them. An inner gear ring 29 is fixedly arranged inside the front housing 38 and located on the periphery of the plurality of planetary wheels 27 and meshes with them. An impact block 24 and a compression spring 25 are sleeved at the front end of the main shaft 21. The impact block 24 is a hollow structure, and its inner cavity is a stepped cylindrical shape with a thin front end and a thick rear end. The compression spring 25 is located in the thick cavity of the impact block 24.

[0033] Two V-shaped grooves 243 are symmetrically provided on the inner wall of the fine cavity of the impact block 24, and two herringbone grooves 211 are correspondingly symmetrically provided on the outer wall of the front end of the main shaft 21. The front end of the main shaft 21 is inserted into the fine cavity of the impact block 24 and is rotatably connected through two balls 23. The balls 23 are steel balls, and the balls 23 are located in the herringbone grooves 211 and the corresponding V-shaped grooves 243; the herringbone grooves 211 and the corresponding V-shaped grooves 243 work together to guide the balls 23, change the direction of the impact block 24, and thus form two impacts in the circumferential direction.

[0034] A pair of impact wings 241 are symmetrically arranged along the radial direction on the front end surface of the impact block 24, and the tail wing 44 is located between the two impact wings 241. One end of the impact wing 241 has an impact surface 242, which impacts with the tail wing 44 to generate impact torque; the tail wing 44 receives the impact torque generated by the impact block 24, and transmits the impact torque to the anchor plate 14 through the square shaft 4 and the sleeve head 1.

[0035] Two pin holes 261 are symmetrically arranged at the front end of the planetary wheel carrier 26 , and two planetary wheel holes 262 are correspondingly symmetrically arranged at the rear end of the planetary wheel carrier 26 . A set of pin holes 261 and planetary wheel holes 262 are used to install a planetary wheel 27 through a pin 28 .

[0036] An intermediate housing 36 is fixedly disposed between the front housing 38 and the stator housing 35 ; two front and rear bearings are disposed in the intermediate housing 36 , and the rear end of the main shaft 21 and the rotating shaft of the rotor 30 are respectively inserted into the inner rings of the two bearings.

[0037] The working process of this utility model: Figure 1As shown, before installation, first manually screw the anchor plate 14 onto the steel bar 15 to be installed, with 1 to 2 buckles. When installing for the first time, first put the inner square 112 of the sleeve 1 onto the outer square 41 of the square shaft 4, insert the fixing pin 12, and then put the fixing ring 13 on to prevent the fixing pin 12 from coming out; then, put the inner hexagon 111 of the sleeve 1 onto the outer hexagon of the anchor plate 14, start the anchor plate installation machine, and tighten it in the forward direction. At the beginning, the resistance torque of the anchor plate 14 is less than the resistance torque of the installation machine, and the high-speed rotation of the anchor plate installation machine drives the anchor plate 14 to rotate; when the thread of the anchor plate 14 contacts the unthreaded part of the steel bar, the resistance torque rises sharply, and the herringbone groove 211 of the rotating main shaft 21 causes the ball 23 to move backward with the impact block 24 to overcome the friction and the pressure of the compression spring 25, so that the impact wing 241 of the impact block 24 and the tail wing 44 of the square shaft 4 are turned from mutual engagement to disengagement. At this time, the square shaft 4 does not move, and the impact block 24 continues to move backward. After turning around the tail wing 44 of the square shaft 4, the impact block 24 moves forward instantaneously due to the action of the compression spring 25, and generates an angular acceleration along the herringbone groove 211, and the impact wing 241 of the impact block 24 hits the tail wing 44 of the square shaft 4, resulting in a collision. Then the herringbone groove 211 causes the ball 23 and the impact block 24 to move backward, and the impact wing 241 is disengaged from the tail wing 44. This cycle generates collisions again and again, and the square shaft 4 obtains the required impact torque, so that the anchor plate 14 is installed with high torque to meet the nuclear power torque requirements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nuclear power steel bar anchor plate installation machine, characterized in that: The invention comprises a motor, an impact assembly and a tightening assembly which are coaxially connected in sequence from back to front; the tightening assembly comprises a square shaft (4) having a pair of tail wings (44) at the rear end, a sleeve (1) being fixedly mounted at the front end of the square shaft (4), and the front end of the sleeve (1) having an inner hexagon (111) adapted to the steel bar anchor plate; the motor is used to drive the impact assembly to rotate, the impact assembly is used to generate an impact on the tail wings (44) and transmit a rotational torque to the square shaft (4), the square shaft (4) drives the sleeve (1) to rotate, and tightens the anchor plate The motor comprises a stator housing (35), a stator (31) and a carbon brush (32) mounted inside the stator housing (35), and a rotor (30) mounted inside the stator (31), wherein a sun gear is disposed at the front end of a rotating shaft of the rotor (30); the impact assembly comprises a front housing (38) and a main shaft (21) rotatably disposed in the front housing (38), a planetary wheel carrier (26) is fixedly disposed at the rear end of the main shaft (21), a plurality of planetary wheels (27) are mounted on the planetary wheel carrier (26), and the sun gear (27) is disposed at the rear end of the main shaft (21). The male wheel extends forward to between the plurality of planetary wheels (27) and meshes with them; an inner gear ring (29) is fixedly arranged inside the front housing (38) and outside the plurality of planetary wheels (27) and meshes with them; an impact block (24) and a compression spring (25) are sleeved on the front end of the main shaft (21); the impact block (24) is a hollow structure, and its inner cavity is a stepped cylindrical shape with a thin front end and a thick rear end; the compression spring (25) is located in the thick cavity of the impact block (24); the thin cavity inner wall of the impact block (24) is symmetrically Two V-shaped grooves (243) are provided, and two herringbone grooves (211) are symmetrically provided on the front end outer wall of the main shaft (21). The front end of the main shaft (21) is inserted into the fine cavity of the impact block (24) and is rotatably connected via two balls (23), and the balls (23) are located in the herringbone grooves (211) and the corresponding V-shaped grooves (243). A pair of impact wings (241) are symmetrically provided along the radial direction on the front end surface of the impact block (24); and the tail wing (44) is located between the two impact wings (241).

2. A nuclear power steel bar anchor plate installation machine according to claim 1, characterized in that: A rear handle (33) is fixedly connected to the rear end of the stator housing (35), an external power input switch (34) is provided inside the rear handle (33), and the external power input switch (34) is electrically connected to the carbon brush (32).

3. A nuclear power steel bar anchor plate installation machine according to claim 1, characterized in that: The planetary wheel carrier (26) is symmetrically provided with two pin shaft holes (261) and two planetary wheel holes (262) for mounting the planetary wheels (27) via pin shafts (28).

4. A nuclear power steel bar anchor plate installation machine according to claim 1, characterized in that: An intermediate housing (36) is also fixedly arranged between the front housing (38) and the stator housing (35); two front and rear bearings are arranged in the intermediate housing (36), and the rear end of the main shaft (21) and the rotating shaft of the rotor (30) are respectively inserted into the inner rings of the two bearings.

5. The nuclear power steel bar anchor plate installation machine according to claim 1, characterized in that: The front end of the square shaft (4) is an outer square (41) for mounting the sleeve (1); the rear end of the square shaft (4) is an optical axis (43), and the optical axis (43) is inserted into a guide sleeve (22), and the guide sleeve (22) is fixedly arranged in a front end opening of the front housing (38).

6. A nuclear power steel bar anchor plate installation machine according to claim 5, characterized in that: The sleeve (1) comprises a sleeve (11); the front end of the sleeve (11) is an inner hexagon (111), and the rear end of the sleeve (11) is an inner square (112) adapted to the outer square (41).

7. A nuclear power steel bar anchor plate installation machine according to claim 6, characterized in that: The sleeve (1) further comprises a fixing pin (12) and a fixing ring (13); an annular groove (114) is provided on the outer wall at the rear end of the sleeve (11); a through-pin hole (113) is provided in the annular groove (114) along the radial direction of the sleeve (11); a through-hole (42) is correspondingly provided on the outer square (41); the through-pin hole (113) and the through-hole (42) are used to fix the sleeve (1) and the square shaft (4) together by means of the fixing pin (12); the fixing ring (13) is an elastic rubber ring, which is sleeved in the annular groove (114) and is used to prevent the fixing pin (12) from falling out.

8. The nuclear power steel bar anchor plate installation machine according to claim 1, characterized in that: The top end of the front shell (38) is fixedly connected to a handle (37).

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