Rotating wheel of open type steel bar wrench and open type steel bar wrench

Abstract

The utility model provides a rotating wheel of an open type steel bar wrench. The rotating wheel comprises an open rotating wheel body, a sliding way A, a sliding way B, a clamping head A and a clamping head B, the front end of the open runner is provided with a radial opening; gear teeth are arranged on the outer circumference of the opening rotating wheel; the slideway A is obliquely arranged on the upper end face of the opening runner and located on one side of the radial opening; the slideway B is arranged on the upper end surface of the opening rotating wheel and is positioned on the other side of the radial opening; the clamping head A is mounted in the slide way A in a sliding manner; the clamping head B is mounted in the slide way B in a position-adjustable manner; the steel bar is clamped through the cooperation of the clamping head A and the clamping head B; the clamping head A and the clamping head B are located at the upper end of the opening rotating wheel and exposed, the structure is simple, meanwhile, the position of the clamping head B can be conveniently adjusted, the tool storage cost of a construction site and the time cost for searching and matching external tools do not need to be additionally increased, the abrasion conditions of the clamping head A and the clamping head B are easy to observe, and replacement is easy.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a revolving wheel and an open-end rebar wrench. Background Technology

[0002] A rebar sleeve, also known as a rebar connector, is a connecting component used to connect rebars and has an internal thread corresponding to the rebar thread. The simple construction process involves rolling the ends of the rebars into straight threads and then connecting the two rebars together using a suitable connecting sleeve. A manual or electric rebar threading wrench is required when connecting the rebars.

[0003] The existing rebar threading wrench has a chuck with a threaded hole on the top left side. An internal hexagonal threaded post is threaded into the threaded hole, and a lock nut is fixedly connected to the bottom of the threaded hole. A threaded rod is threaded into the inner wall of the lock nut, and an adjusting gear is fixedly connected to the middle of the threaded rod. A sliding through hole is located on the left side of the chuck, and a pressing block is slidably connected within the sliding through hole. A toothed plate is located on the front of the pressing block, and an anti-slip groove is located at the right end of the toothed plate. An opening slot is located on the front of the chuck, and an arc-shaped gear is fitted onto the outer wall of the chuck. An insertion hole is located on the back of the chuck, and a threading cutter is inserted into the insertion hole. A pushing groove is located on the back of the threading cutter.

[0004] The existing technology involves rotating the internal hexagonal threaded column clockwise, which drives the threaded rod, causing the adjusting gear to drive the toothed plate, thus moving the extrusion block inward and making the anti-slip groove tightly press against the outer wall of the rebar. However, this technology has the following problems: 1. During this process, construction workers will use external tools such as hexagonal wrenches, increasing the cost of tool reserves and the time cost of finding and matching such tools. We need to clearly recognize that time is extremely valuable for construction work, and the types of rebars on site are diverse. Clamping different specifications of rebar requires quickly adjusting the opening size of the extrusion block. Therefore, the existing mechanism is complex and inconvenient to adjust. After adjustment, a locking nut is needed to prevent the threaded rod from rotating during clamping. 2. On the other hand, because the extrusion block frequently comes into contact with and rubs against the rebar, it is used as a consumable and needs to be replaced frequently. The extrusion block is located inside the chuck, making it difficult to observe its wear and replace. 3. The left side of the chuck has a sliding through hole. This design requires multiple flipping processes on the machine tool, increasing manufacturing costs. 4. The outer wall of the chuck is fitted with an arc-shaped gear, which requires the additional fabrication of an arc-shaped gear. This gear is thin-walled and ring-shaped, with low strength, and is prone to deformation after heat treatment. This increases the difficulty of assembly when it is assembled with the chuck, and it is not as strong as an integral geared chuck.

[0005] There are other types of rebar threading wrenches, some of which are too heavy and difficult to lift, making them only suitable for processing horizontal bars and not for tightening column bars. Others have insufficient machine casing strength, making them prone to cracking. Still others have wrench heads designed to be too wide, making them unusable in areas with dense rebar, such as reinforced shear walls, beams, and rebar cages. Utility Model Content

[0006] The purpose of this invention is to provide a rotating wheel for an open-end rebar wrench and an open-end rebar wrench itself. This is achieved by cross-arranging slideways A and B on the open-end rotating wheel; clamping head A is slidably installed within slideway A; clamping head B is adjustablely installed within slideway B; and clamping heads A and B protrude from the upper end of the open-end rotating wheel. The structure is simple, and the positions of clamping heads A and B can be easily adjusted, allowing them to accommodate rebars of different diameters. This solves the problem of existing clamps requiring external tools and having cumbersome adjustment and locking procedures when adjusting the position of the clamping block; and it also solves the problem of the clamping block being inconvenient to replace when located inside the clamp.

[0007] The first aspect of this application provides a rotating wheel for an open-end rebar wrench, comprising:

[0008] An open-ended rotating wheel has a radial opening at its front end; teeth are provided on the outer circumference of the open-ended rotating wheel.

[0009] Slide A is located on the upper end face of the open wheel and on the radial opening side;

[0010] Slide B; Located on the upper end face of the open-ended wheel and on the other side of the radial opening, slides A and B are arranged intersectingly;

[0011] Clamping head A; slidably mounted within the slide rail A; and

[0012] Clamping head B; its position is adjustable and installed in the slide rail B; the clamping head A and clamping head B work together to clamp the reinforcing bar.

[0013] Preferably, the sliding direction angle between slide A and slide B is α, and the angle α ranges from 30° to 150°.

[0014] Preferably, the front end of the slide rail A is provided with a blocking part; the open wheel is provided with an elastic component, which provides a force to move the clamping head A toward the blocking part.

[0015] Preferably, the elastic component is a first torsion spring; the first torsion spring is mounted on the open rotating wheel; one end of the first torsion spring abuts against the open rotating wheel; the other end of the first torsion spring abuts against the rear end of the clamping head A.

[0016] Preferably, a locking block is provided on the side of the slide rail B; the locking block is slidably mounted on the open rotating wheel; the locking block can lock the clamping head B.

[0017] Preferably, the part where the locking block and the clamping head B engage is provided with ratchet teeth. When the ratchet teeth on the locking block and the ratchet teeth on the clamping head B are in a biting state, the locking block locks the position of the clamping head B.

[0018] Preferably, a second torsion spring is installed on the open rotating wheel; one end of the second torsion spring abuts against the open rotating wheel; the other end of the second torsion spring abuts against the locking block; the second torsion spring pushes the locking block to clamp the clamping head B.

[0019] Preferably, the lower end face of the open-ended wheel is provided with a mounting hole; a rolling bearing is installed in the mounting hole; and a pin is installed in the rolling bearing.

[0020] A second aspect of this application provides an open-end rebar wrench, comprising:

[0021] A power unit, used to provide power;

[0022] Gear set, connected to the power unit; and

[0023] A housing is disposed at the front end of the power unit; the gear set is disposed in the housing, and the front end of the housing is provided with an opening;

[0024] The gear set includes:

[0025] The central gear shaft is connected to the power unit;

[0026] Side gears, meshing with the central gear shaft, wherein there are at least two side gears; and

[0027] A rotating wheel, wherein the rotating wheel is any one of the rotating wheels described above; the teeth on the rotating wheel mesh with the side gear; the rotating wheel is configured to remain meshed with the side gear during the rotational motion of the rotating wheel.

[0028] Preferably, it also includes a striking mechanism, which is disposed between the power unit and the gear set. The striking mechanism generates an impact torque during impact and transmits the impact torque to the gear set.

[0029] An outer cylinder is provided between the power unit and the housing; the striking mechanism is located inside the outer cylinder.

[0030] Preferably, it also includes a reducer and a torque limiter. The power unit is connected to the gear set through the reducer and the torque limiter. The reducer is used to reduce the speed of the power unit and increase the torque, and the torque limiter is used to limit the maximum torque output of the power unit and protect the power unit from overload.

[0031] Preferably, the outer cylinder is connected to the front end of the power unit; a rear cover is installed at the rear end of the outer cylinder; the power output gear shaft of the power unit passes through the rear cover of the outer cylinder and is connected to and drives the striking mechanism.

[0032] Preferably, it further includes a planetary reduction mechanism; the planetary reduction mechanism is located at the front end of the striking mechanism; the planetary reduction mechanism includes: a planet carrier b, planetary gears b, and a gear ring b; the front end of the striking output shaft of the striking mechanism is provided with a gear section, and the gear section of the striking output shaft of the striking mechanism meshes with the planetary gears b inside the planet carrier b; a gear ring b is provided inside the outer cylinder; the planetary gears b mesh with the gear ring b.

[0033] Preferably, the planetary reduction mechanism is connected to the gear set via a bevel gear set; the bevel gear set includes a small bevel gear and a large bevel gear; the small bevel gear is connected to the planet carrier b; the large bevel gear is mounted on the journal of the central gear shaft, and the small bevel gear and the large bevel gear mesh.

[0034] Preferably, the housing includes a cover plate and a bottom plate; an accommodating space is formed between the cover plate and the bottom plate; the cover plate and the bottom plate are connected by a connecting component; the gear set is disposed within the accommodating space; an open guide ring is provided at the front end of the bottom plate, and the open guide ring guides the rotation of the rotating wheel.

[0035] Preferably, the front end of the outer cylinder is connected to the shell via a connector; the connector has a first mounting portion and a second mounting portion; the first mounting portion is connected to the front end of the outer cylinder; the first mounting portion is connected to the top cover; the top cover and the second mounting portion clamp the shell.

[0036] Preferably, a guide rail is provided on one side of the housing; a clamping assembly is installed on the guide rail.

[0037] Preferably, the clamping assembly includes: a sliding sleeve, a clamping head A, and a clamping head B; the sliding sleeve is slidably mounted on the guide rail; the clamping head A is mounted on the sliding sleeve; the clamping head B is connected to the clamping head A; clamping is performed by the clamping head A and the clamping head B.

[0038] Because this utility model adopts the above-described technical solution, it has the following advantages:

[0039] This invention features a simple structure with slides A and B intersecting on an open-end rotating wheel. Clamping head A is slidably mounted within slide A, while clamping head B is adjustablely mounted within slide B. Clamping heads A and B are located at the upper end of the open-end rotating wheel and are exposed. The structure allows for easy adjustment of the position of clamping head B without incurring additional costs for tool reserves on the construction site or the time spent searching for and matching such external tools. The wear condition of clamping heads A and B is easily observed, and they are also easy to replace.

[0040] This utility model features a radial opening at the front end of an open-wheel; gear teeth are directly provided on the outer circumference of the open-wheel, resulting in an integrated structure design with high strength and a more compact and refined appearance.

[0041] 3. When the reinforcing bar is inserted into the radial opening, the clamping head A can be pushed backward to facilitate its entry into the radial opening; by setting a first torsion spring to provide a force for the clamping head A to move closer to the blocking part, the clamping head A can more firmly hold the reinforcing bar.

[0042] 4. This utility model features ratchet teeth at the engagement point between the locking block and the clamping head B, allowing the ratchet teeth on the locking block to better engage with the ratchet teeth on the clamping head B, thereby locking the position of the clamping head B. One end of the second torsion spring abuts against the opening wheel, and the other end abuts against the locking block. Without applying external force, the locking block can firmly engage the clamping head B. When it is necessary to adjust the position of the clamping head B, the locking block is pushed to release the engagement between the locking block and the clamping head B. At this time, the clamping head B is pushed to adjust its position within the slide rail B. After adjustment, the locking block is released, and the locking block, under the thrust of the second torsion spring, clamps the clamping head B, allowing for convenient adjustment of the position of the clamping head B, thereby adjusting the opening size of the clamping head A and clamping head B to accommodate steel bars of different diameters.

[0043] 5. This utility model features a shell comprising a cover plate and a base plate, both made of high-strength, high-hardness 65Mn alloy sheet. This high-strength material is resistant to cracking and can be designed to be relatively thin and light, resulting in a lighter weight and easier lifting during column reinforcement tightening. Due to the smaller outer diameter of the open-end wheel, the heads of the cover plate and base plate are narrower, allowing for use in areas with dense reinforcement, such as reinforced shear walls, beams, and reinforcement cages. Currently, most shells on the market are made of cast aluminum alloy, which has lower strength and is prone to cracking, requiring a thicker and heavier design, resulting in a larger overall weight and wider shell dimensions.

[0044] 6. This utility model connects the power output gear shaft of the power device through the outer cylinder rear cover to the striking mechanism for transmission, and the rear cover bears the recoil force when the striking mechanism strikes, thus preventing the recoil force generated during the strike from damaging the power device. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of an open-type rebar wrench according to the present invention.

[0046] Figure 2 This is a schematic diagram of the handle a structure of this utility model.

[0047] Figure 3 , Figure 4 This is an exploded structural diagram of an open-type rebar wrench according to the present invention.

[0048] Figure 5 This is a schematic diagram of the striking mechanism structure of this utility model.

[0049] Figure 6 , Figure 7 , Figure 8 This is a schematic diagram of the explosive structure of the striking mechanism of this utility model.

[0050] Figure 9 This is a schematic diagram of the connecting component structure of this utility model.

[0051] Figure 10 This is a schematic diagram of the gear assembly structure of this utility model.

[0052] Figure 11 This is a schematic diagram of the base plate structure of this utility model.

[0053] Figure 12 This is a schematic diagram of the bevel gear set structure of this utility model.

[0054] Figure 13 This is a schematic diagram of the rotating explosion structure of this utility model.

[0055] Figure 14 This is a schematic diagram of the slide B structure of this utility model.

[0056] Figure 15 This is a schematic diagram of the slide A structure of this utility model.

[0057] Figure 16 This is a schematic diagram of the pin structure of this utility model.

[0058] Figure 17 This is a schematic diagram of the card block structure of this utility model.

[0059] Figure 18 This is a schematic diagram of the clamping assembly structure of this utility model.

[0060] Figure 19 This is a schematic diagram of the fourth sliding groove structure of this utility model.

[0061] Icon labels:

[0062] 10-Power unit; 20-Outer cylinder; 30-Housing; 40-Bevel gear set; 50-Gear set; 11-Impact mechanism; 12-Reduction mechanism; 111-Ring gear a; 112-Planet carrier a; 113-Planet gear a; 114-Spindle; 115-Compression spring; 116-Impact block; 117-Impact output shaft; 121-Planet carrier b; 122-Planet gear b; 123-Ring gear b; 101-Power output gear shaft; 21-Outer cylinder rear cover; 31-Cover plate; 32-Base plate; 33-Handle a; 34-Top cover; 35-Connector; 351-First mounting part; 352-Second mounting part; 321-Open guide ring; 41-Small bevel gear; 42-Large bevel gear ; 51-Central gear shaft; 52-Side gear; 53-Rotating wheel; 531-Slide rail A; 532-Slide rail B; 533-First mounting hole; 534-Second mounting hole; 535-Open rotating wheel; 536-Radial opening; 537-Gear tooth; 538-Mounting hole; 539-Pin; 5310-Rolling bearing; 5311-Blocking part; 61-Clamping head A; 62-First torsion spring; 63-First mounting post; 71-Clamping head B; 72-Clamping block; 73-Second torsion spring; 74-Second mounting post; 81-Guide rail; 82-Sliding sleeve; 83-Clamping head A; 84-Clamping head B; 85-Handle b; 811-Third slide groove; 812-Roller; 821-Fourth slide groove. Detailed Implementation

[0063] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0064] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or it can be an element placed in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0066] See Figure 12-17 To address the problems of existing rebar wrenches where adjusting the position of the clamping block requires external tools and involves cumbersome adjustment and locking procedures, and where the clamping block is inconvenient to replace due to its internal location within the clamp, this utility model provides an open-type rebar wrench with a rotating wheel 53, comprising:

[0067] The open-ended rotating wheel 535 has a radial opening 536 at its front end; the open-ended rotating wheel 535 has teeth 537 on its outer circumference; by providing the radial opening 536, the reinforcing bars can be easily entered into the open-ended rotating wheel 535; by providing the teeth 537 on the outer circumference of the open-ended rotating wheel 535, the open-ended rotating wheel 535 can be easily driven to rotate.

[0068] The slide rail A531 is inclinedly disposed on the upper end face of the open wheel 535 and located on one side of the radial opening 536;

[0069] See Figure 14 Slide A531 is located on the right side of the open rotating wheel 535. The sliding direction of slide A531 and slide B532 is at an angle α, which ranges from 30° to 150°. In this embodiment, the angle α is 110°.

[0070] Slide B532; Located on the upper end face of the open roller 535 and on the other side of the radial opening 536, slides A531 and B532 are arranged intersectingly; see reference Figure 14 The slide rail B532 is located on the left side of the open-ended roller 535; the slide rail B532 is perpendicular to the central axis of the open-ended roller 535.

[0071] Clamping head A61; slidably installed within slide rail A531; and

[0072] Clamping head B71 is adjustablely mounted within slide rail B532; it clamps reinforcing bars through the cooperation of clamping heads A61 and B71. Slide rails A531 and B532 are crosswise arranged on the open roller 535; clamping head B71 is adjustablely mounted within slide rail B532; clamping heads A61 and B71 are located at the upper end of the open roller 535 and are exposed. The structure is simple, and the position of clamping head B71 can be easily adjusted without increasing the cost of on-site tool reserves or the time cost of finding and matching such external tools. The wear condition of clamping heads A61 and B71 is easily observed, and they are also easy to replace.

[0073] In another embodiment of this invention, a blocking part 5311 is provided at the front end of the slide rail A531; an elastic member is provided on the open roller 535, and the elastic member provides a force to move the clamping head A61 toward the blocking part 5311. (See also...) Figure 13The blocking part 5311 is provided at the front of the slide rail A531; the blocking part 5311 covers a small part of the front end of the clamping head A61, thereby restricting the clamping head A61 to the foremost position in the slide rail A531; when the steel bar is inserted into the radial opening, the clamping head A61 can be pushed backward to facilitate its entry into the radial opening; by providing a first torsion spring to provide a force for the clamping head A61 to move closer to the blocking part 5311, the clamping head A61 can more firmly clamp the steel bar.

[0074] In another embodiment of this invention, the elastic component is a first torsion spring 62; the first torsion spring 62 is mounted on the open rotating wheel 535; one end of the first torsion spring 62 abuts against the open rotating wheel 535; the other end of the first torsion spring 62 abuts against the rear end of the clamping head A61. By providing the first torsion spring 62, a force is provided to push the clamping head A61 toward the blocking part, so that when the rebar is inserted into the radial opening 536, the clamping head A61 can be pushed backward to facilitate its entry into the radial opening; at the same time, the force provided by the first torsion spring 62 to push the clamping head A61 toward the blocking part 5311 can make the clamping head A61 more firmly abut against the rebar. Preferably, the open rotating wheel 535 is provided with a first mounting hole 533, see reference. Figure 13 and 16 The first mounting hole 533 is located to the left rear of the slide rail A531. The first mounting post 63 is installed in the first mounting hole 533. The first torsion spring 62 is sleeved on the first mounting post 63. One end of the first torsion spring 62 abuts against the open rotating wheel 535, and the other end of the first torsion spring 62 abuts against the rear end of the clamping head A61.

[0075] In another embodiment of this invention, a locking block 72 is provided on the side of the slide rail B532; the locking block 72 is slidably mounted on the open rotating wheel 535; the locking block 72 can lock the clamping head B71. By setting the locking block 72 to lock the clamping head B71, the position of the clamping head B71 in the slide rail B532 can be locked. In this embodiment, the clamping head B71 can also be tightened by setting bolts on the side of the slide rail B532; after loosening the bolts, the position of the clamping head B71 in the slide rail B532 can be adjusted.

[0076] In another embodiment of this invention, the part where the locking block 72 and the clamping head B71 engage is provided with ratchet teeth. When the ratchet teeth on the locking block 72 and the ratchet teeth on the clamping head B71 are engaged, the locking block 72 locks the position of the clamping head B71. By providing ratchet teeth at the engagement point between the locking block 72 and the clamping head B71, the ratchet teeth on the locking block 72 can better engage with the ratchet teeth on the clamping head B71, thereby better locking the position of the clamping head B71. When moving the position of the clamping head B71, the locking block 72 is first pulled back to disengage the locking block 72 from the clamping head B71. Then, the clamping head B71 is adjusted to a suitable position, and then the locking block 72 is released, allowing the ratchet teeth on the locking block 72 to engage with the ratchet teeth on the clamping head B71, thus relocking the position of the clamping head B71.

[0077] In another embodiment of this invention, a second torsion spring 73 is installed on the open rotating wheel 535; one end of the second torsion spring 73 abuts against the open rotating wheel 535; the other end of the second torsion spring 73 abuts against the locking block 72; the second torsion spring 73 pushes the locking block 72 to clamp the clamping head B71. One end of the second torsion spring 73 abuts against the open rotating wheel 535, and the other end of the second torsion spring 73 abuts against the locking block 72. The elastic force of the second torsion spring 73 allows the locking block 72 to firmly engage with the clamping head B71. When it is necessary to adjust the position of the clamping head B71, the locking block 72 is pulled back to release the engagement between the locking block 72 and the clamping head B71. Then, the clamping head B71 is pushed to adjust its position within the slide rail B532. After adjustment, the locking block 72 is released, and the locking block 72, under the elastic force of the second torsion spring 73, locks the clamping head B71, allowing for easy adjustment of the position of the clamping head B71. This adjusts the opening size of the clamping head A61 and the clamping head B71, thus accommodating steel bars of different diameters. (See reference...) Figure 13 and 16 The second mounting hole 534 is located to the right rear of the slide B532. The second mounting post 74 is installed in the second mounting hole 534, and the second torsion spring 73 is sleeved on the second mounting post 74. One end of the second torsion spring 73 abuts against the open rotating wheel 535, and the other end of the second torsion spring 73 abuts against the locking block 72.

[0078] In another embodiment of this invention, the lower end face of the open-end roller 535 is provided with a mounting hole 538; a rolling bearing 5310 is installed in the mounting hole 538; a pin 539 is installed in the rolling bearing 5310. The rolling bearing 5310 can be a needle roller bearing or a ball bearing; the lower end of the pin 539 is inserted into the annular groove of the open-end guide ring 321; when the open-end roller 535 rotates, it is guided by the pin 539 in the annular groove of the open-end guide ring 321. Since the pin 539 and the side wall of the annular groove of the open-end guide ring 321 adopt a rolling contact method, the friction between the pin 539 and the open-end guide ring 321 can be reduced, thereby increasing the service life of the pin 539 and the open-end guide ring 321.

[0079] See Figure 1-11 and Figure 18-19 This utility model also provides an open-type rebar wrench, comprising:

[0080] The power unit 10 is used to provide power; the power unit 10 can be any type of motor, such as electric, pneumatic, hydraulic or manual, to provide power to this device.

[0081] Gear set 50 is connected to power unit 10; and

[0082] The housing 30 is located at the front end of the power unit 10; the gear set 50 is located in the housing 30, and the front end of the housing 30 is provided with an opening; the front end of the open wheel 535 is provided with a radial opening 536; when the radial opening 536 at the front end of the open wheel 535 coincides with the opening at the front end of the housing 30, the device can be directly clamped from the side of the steel bar.

[0083] Gear set 50 includes:

[0084] The central gear shaft 51 is connected to the power unit 10; the power unit 10 drives the central gear shaft 51 to rotate.

[0085] Side gears 52 mesh with the central gear shaft 51. There are at least two side gears 52. Preferably, there are two side gears 52, distributed on both sides of the central gear shaft 51. During the rotation of the rotating wheel 53, at least one side gear 52 remains meshed with the rotating wheel 53. In this way, when one side gear 52 enters the radial opening 536 area at the front end of the open rotating wheel 535, the other side gear 52 can still drive the open rotating wheel 535 to continue rotating, ensuring that the two side gears 52 can smoothly cross the radial opening 536, thereby ensuring that the power transmission is uninterrupted.

[0086] Rotary wheel 53, which is the rotary wheel 53 in any of the above embodiments; the teeth 537 on the rotary wheel 53 mesh with the side gear 52; the rotary wheel 53 is configured to maintain meshing with the side gear 52 during the rotational movement of the rotary wheel 53.

[0087] The working principle is as follows: the power unit 10 drives the central gear shaft 51 to rotate; the central gear shaft 51 drives the side gear 52 meshing with it to rotate; the side gear 52 drives the rotating wheel 53 to rotate; when the radial opening 536 at the front end of the open rotating wheel 535 coincides with the opening at the front end of the housing 30, the device can be directly clamped from the side of the steel bar; the steel bar or sleeve is clamped by the cooperation of the clamping head A61 and the clamping head B71, and then the steel bar or sleeve is driven to rotate together.

[0088] In another embodiment of this invention, a striking mechanism 11 is also included. The striking mechanism 11 is disposed between the power unit 10 and the gear set 50. The striking mechanism 11 generates an impact torque during impact and transmits the impact torque to the gear set 50.

[0089] An outer cylinder 20 is provided between the power unit 10 and the housing 30; the striking mechanism 11 is located inside the outer cylinder 20. The outer cylinder 20 is provided between the power unit 10 and the housing 30 and the striking mechanism 11 is located inside the outer cylinder 20; the outer wall of the outer cylinder 20 is provided with heat dissipation grooves and fins, which can accelerate the heat dissipation of the striking mechanism 11 and prevent the temperature from being too high, causing premature wear.

[0090] The striking mechanism 11 includes: a spindle 114, an impact block 116 sleeved on the front of the spindle 114; a planetary carrier a112 is provided under the spindle 114; a compression spring 115 is provided between the impact block 116 and the planetary carrier a112; a V-groove is provided in the impact block 116; a V-groove with opposite directions is provided on the spindle 114, and a steel ball 1141 is provided in the V-groove of the impact block 116 and the spindle 114; a planetary gear a113 is installed in the planetary carrier a112; the planetary gear a113 meshes with a gear ring a111 installed in the rear cover 21 at the rear of the outer cylinder 20; the power output gear shaft 101 at the front end of the power unit 10 meshes with the planetary gear a113; and the impact block 116 is fitted with a striking output shaft 117. When the load increases, the impact block 116 can no longer drive the impact output shaft 117 to rotate. At this time, the power output gear shaft 101 at the front end of the power device 10 drives the planetary gear a113 to rotate. The planetary gear a113 drives the spindle 114 to rotate. The spindle 114 transmits power to the impact block 116 through the steel balls. The impact block 116 is subjected to the force of the steel balls, moves backward on the spindle 114 and compresses the compression spring 115. The protrusion on the impact block 116 disengages from the impact output shaft 117. Under the elastic force of the compression spring 115 and the force of the spindle 114, the compression potential energy is converted into rotational kinetic energy, and strikes the impact output shaft 117 through the protrusion on the impact block 116, realizing the impact torque. The output torque can be increased according to the increase of the load.

[0091] In another embodiment of this invention, a speed reducer and a torque limiter are also included. The power unit 10 is connected to the gear set 50 through the speed reducer and the torque limiter. The speed reducer is used to reduce the rotational speed of the power unit 10 and increase the torque. The torque limiter is used to limit the maximum torque output by the power unit 10 and protect the power unit 10 from overload.

[0092] In another embodiment of this invention, the outer cylinder 20 is connected to the front end of the power device 10; the rear end of the outer cylinder 20 is fitted with an outer cylinder rear cover 21; the power output gear shaft 101 of the power device 10 passes through the outer cylinder rear cover 21 and is connected to and drives the striking mechanism 11. The rear cover 21 bears the recoil force when the striking mechanism 11 strikes, preventing the recoil force generated during the strike from damaging the power device 10.

[0093] In another embodiment of this invention, a planetary reduction mechanism 12 is also included. The planetary reduction mechanism 12 is located at the front end of the striking mechanism 11. The planetary reduction mechanism 12 includes a planet carrier b121, planetary gears b122, and a gear ring b123. The front end of the striking output shaft 117 of the striking mechanism 11 is provided with a gear portion, which meshes with the planetary gears b122 inside the planet carrier b121. A gear ring b123 is provided inside the outer cylinder 20. The planetary gears b122 mesh with the gear ring b123. The striking output shaft 117 of the striking mechanism 11 drives the planetary gears b122 inside the planet carrier b121 to rotate, and the planetary gears b122 drive the planet carrier b121 to rotate. The planetary reduction mechanism 12 can reduce the speed of the striking output shaft 117.

[0094] In another embodiment of this invention, the planetary reduction mechanism 12 is connected to the gear set 50 via a bevel gear set 40; the bevel gear set 40 includes a small bevel gear 41 and a large bevel gear 42; the small bevel gear 41 is connected to the planet carrier b121; the large bevel gear 42 is mounted on the journal of the central gear shaft 51, and the small bevel gear 41 and the large bevel gear 42 mesh.

[0095] In another embodiment of this invention, the housing 30 includes a cover plate 31 and a bottom plate 32; an accommodating space is formed between the cover plate 31 and the bottom plate 32; the cover plate 31 and the bottom plate 32 are connected by a connecting component; a gear set 50 is disposed within the accommodating space; an open guide ring 321 is provided at the front end of the bottom plate 32, which guides the rotation of the rotating wheel 53. By providing an accommodating space between the cover plate 31 and the bottom plate 32, and by disposing of the gear set 50 within the accommodating space, the housing 30 can be easily disassembled, wherein the open guide ring 321 at the front end of the bottom plate 32 is aligned with the opening at the front end of the housing 30.

[0096] The cover plate 31 and base plate 32 are made of high-strength, high-hardness alloy plate 65Mn. They are strong, not easily cracked, and can be designed to be relatively thin and light, resulting in a lighter weight and easier lifting when tightening column reinforcement. Due to the small outer diameter of the open-end roller, the heads of the cover plate 31 and base plate 32 are narrower, allowing for use in areas with dense reinforcement, such as reinforced shear walls, beams, and reinforcement cages. In contrast, most shells on the market are made of cast aluminum alloy, which has lower strength and is prone to cracking, requiring a thicker and heavier design, resulting in a larger overall weight and wider shell dimensions.

[0097] Preferably, a handle a33 can also be installed on the side of the cover plate 31 and the bottom plate 32, so that the operator can hold the power unit 10 with one hand and the handle a33 with the other hand, making it convenient to use the device.

[0098] In another embodiment of this invention, the front end of the outer cylinder 20 is connected to the housing 30 via a connector 35; the connector 35 has a first mounting portion 351 and a second mounting portion 352; the first mounting portion 351 is connected to the front end of the outer cylinder 20; the first mounting portion 351 is connected to the upper cover 34; the upper cover 34 and the second mounting portion 352 clamp the housing 30. A bearing is installed inside the first mounting portion 351 to support the rotation of the planetary carrier b121; by clamping the housing 30 with the upper cover 34 and the second mounting portion 352, the rear part of the housing 30 can be covered, clamped, and fixed.

[0099] In another embodiment of this invention, a guide rail 81 is provided on one side of the housing 30; a clamping assembly is mounted on the guide rail 81. For the case of the rebar sleeve, please refer to... Figure 17 By setting a clamping assembly on the guide rail 81, the clamping head A61 and clamping head B71 of this device can clamp the steel bar at one end of the sleeve, and the clamping assembly clamps the steel bar at the other end of the sleeve. The clamping head A61 and clamping head B71 drive the steel bar to rotate, thereby achieving simultaneous tightening of the steel bars at both ends of the sleeve. This allows for single-person tightening, eliminating the need for two people, one to fix one end and the other to tighten the other end, as is required with ordinary steel bar wrenches.

[0100] In another embodiment of this invention, the clamping assembly includes: a sliding sleeve 82, a clamping head A83, and a clamping head B84; the sliding sleeve 82 is slidably mounted on a guide rail 81; the clamping head A83 is mounted on the sliding sleeve 82; the clamping head B84 is connected to the clamping head A83; clamping is performed by the clamping head A83 and the clamping head B84; preferably, a third sliding groove 811 is provided on the guide rail 81, a fourth sliding groove 821 is provided inside the sliding sleeve 82, and rollers 812 are rotatably mounted in the third sliding groove 811 and the fourth sliding groove 821. Preferably, a handle b85 is provided on the clamping head B84; a torsion spring is provided on the clamping head A83, one end of the torsion spring is connected to the clamping head A83, and the other end of the torsion spring is connected to the clamping head B84, so that the clamping head B84 is pressed against the clamping head A83, and the clamping head B84 is moved away from the clamping head A83 by moving the handle b85.

[0101] This utility model also includes at least the following advantages:

[0102] This utility model features a simple structure with slides A531 and B532 intersecting on an open rotating wheel 535. A clamping head B71 is adjustablely mounted within slide B532. Clamping heads A61 and B71 are located at the upper end of the open rotating wheel 535 and are exposed. The structure allows for easy adjustment of the clamping head B71's position, eliminating the need for additional tool storage costs at the construction site and the time cost of finding and matching such external tools. The wear condition of clamping heads A61 and B71 is easily observed, and they are also easy to replace.

[0103] See Figure 13 A blocking part 5311 is provided at the front of the slide rail A531; the blocking part 5311 covers a small portion of the front end of the clamping head A61, thereby restricting the position of the clamping head A61 at the foremost end within the slide rail A531; when the reinforcing bar is inserted into the radial opening, it can push the clamping head A61 backward to facilitate its entry into the radial opening; by providing a first torsion spring to provide a force for the clamping head A61 to move towards the blocking part 5311, the clamping head A61 can more firmly hold the reinforcing bar. By providing a first torsion spring 62 to provide a force for the clamping head A61 to move towards the blocking part, when the reinforcing bar is inserted into the radial opening 536, it can push the clamping head A61 backward to facilitate its entry into the radial opening; at the same time, the first torsion spring 62 provides a force for the clamping head A61 to move towards the blocking part 5311, which can more firmly hold the clamping head A61 against the reinforcing bar.

[0104] The open-end rotary wheel 535 is provided with a first mounting hole 533, see reference. Figure 13 and 16 The first mounting hole 533 is located to the left rear of the slide rail A531. A first mounting post 63 is installed in the first mounting hole 533, and a first torsion spring 62 is sleeved on the first mounting post 63. One end of the first torsion spring 62 abuts against the open rotating wheel 535, and the other end of the first torsion spring 62 abuts against the rear end of the clamping head A61. By setting the locking block 72 to clamp the clamping head B71, the position of the clamping head B71 in the slide rail B532 can be locked. In this embodiment, the clamping head B71 can also be tightened by setting bolts on the side of the slide rail B532. After loosening the bolts, the position of the clamping head B71 in the slide rail B532 can be adjusted.

[0105] By providing ratchet teeth at the point where the locking block 72 and the clamping head B71 engage, the ratchet teeth on the locking block 72 can better bite the ratchet teeth on the clamping head B71, thereby better locking the position of the clamping head B71. When moving the position of the clamping head B71, first pull the locking block 72 backward to disengage the locking block 72 from the clamping head B71, then adjust the clamping head B71 to the appropriate position, and then release the locking block 72 so that the ratchet teeth on the locking block 72 bite the ratchet teeth on the clamping head B71, thus relocking the position of the clamping head B71.

[0106] One end of the second torsion spring 73 abuts against the open rotating wheel 535, and the other end of the second torsion spring 73 abuts against the locking block 72. The elastic force of the second torsion spring 73 allows the locking block 72 to firmly engage with the clamping head B71. When it is necessary to adjust the position of the clamping head B71, the locking block 72 is pulled back to release the engagement between the locking block 72 and the clamping head B71. Then, the clamping head B71 is pushed to adjust its position within the slide rail B532. After adjustment, the locking block 72 is released, and the locking block 72, under the elastic force of the second torsion spring 73, locks the clamping head B71, allowing for easy adjustment of the position of the clamping head B71. This adjusts the opening size of the clamping head A61 and the clamping head B71, thus accommodating steel bars of different diameters. (See reference...) Figure 13 and 16 The second mounting hole 534 is located to the right rear of the slide B532. The second mounting post 74 is installed in the second mounting hole 534, and the second torsion spring 73 is sleeved on the second mounting post 74. One end of the second torsion spring 73 abuts against the open rotating wheel 535, and the other end of the second torsion spring 73 abuts against the locking block 72.

[0107] The power unit 10 drives the central gear shaft 51 to rotate; the central gear shaft 51 drives the side gear 52 meshing with it to rotate, and the side gear 52 drives the rotating wheel 53 to rotate. When the radial opening 536 at the front end of the open rotating wheel 535 coincides with the opening at the front end of the housing 30, the device can be directly clamped from the side of the reinforcing bar; the reinforcing bar or sleeve is clamped by the cooperation of clamping head A61 and clamping head B71, and then the reinforcing bar or sleeve rotates together. The outer cylinder 20 is set between the power unit 10 and the housing 30, and the striking mechanism 11 is located inside the outer cylinder 20; the outer wall of the outer cylinder 20 is provided with heat dissipation grooves and fins, which can accelerate the heat dissipation of the striking mechanism 11 and prevent the temperature from being too high, causing premature wear.

[0108] The cover plate 31 and base plate 32 are made of high-strength, high-hardness alloy plate 65Mn. They are strong, not easily cracked, and can be designed to be relatively thin and light, resulting in a lighter weight and easier lifting when tightening column reinforcement. Due to the small outer diameter of the open-end roller, the heads of the cover plate 31 and base plate 32 are narrower, allowing for use in areas with dense reinforcement, such as reinforced shear walls, beams, and reinforcement cages. In contrast, most shells on the market are made of cast aluminum alloy, which has lower strength and is prone to cracking, requiring a thicker and heavier design, resulting in a larger overall weight and wider shell dimensions.

[0109] For the case of rebar sleeves, please refer to... Figure 17By setting a clamping assembly on the guide rail 81, the clamping head A61 and clamping head B71 of this device can clamp the steel bar at one end of the sleeve, and the clamping assembly clamps the steel bar at the other end of the sleeve. The clamping head A61 and clamping head B71 drive the steel bar to rotate, thereby achieving simultaneous tightening of the steel bars at both ends of the sleeve. This allows for single-person tightening, eliminating the need for two people, one to fix one end and the other to tighten the other end, as is required with ordinary steel bar wrenches.

[0110] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0111] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A revolving wheel for an open-end rebar wrench, characterized in that, include: An open-ended rotating wheel (535) has a radial opening (536) at its front end; gear teeth (537) are provided on the outer circumference of the open-ended rotating wheel (535). Slide A (531) is located on the upper end face of the open wheel (535) and on one side of the radial opening (536); Slide B (532); It is located on the upper end face of the open wheel (535) and on the other side of the radial opening (536), and slides A (531) and slide B (532) are arranged intersectingly; Clamping head A (61); slidably mounted within the slide rail A (531); and Clamping head B (71); its position is adjustable and installed in the slide rail B (532); the steel bar is clamped by the cooperation of clamping head A (61) and clamping head B (71).

2. The rotating wheel of the open-type rebar wrench according to claim 1, characterized in that, The sliding direction of slide A (531) and slide B (532) is α, and the angle of α is in the range of 30° to 150°.

3. The rotating wheel of the open-type rebar wrench according to claim 1, characterized in that, The slide rail A (531) has a blocking part (5311) at its front end; the open wheel (535) has an elastic component, which provides a force for the clamping head A (61) to move closer to the blocking part (5311).

4. The rotating wheel of the open-type rebar wrench according to claim 3, characterized in that, The elastic component is a first torsion spring (62); the first torsion spring (62) is mounted on the open rotating wheel (535); one end of the first torsion spring (62) abuts against the open rotating wheel (535); the other end of the first torsion spring (62) abuts against the rear end of the clamping head A (61).

5. The rotating wheel of the open-type rebar wrench according to claim 1, characterized in that, A locking block (72) is provided on the side of the slide rail B (532); the locking block (72) is slidably mounted on the open rotating wheel (535); the locking block (72) can lock the clamping head B (71).

6. The rotating wheel of the open-type rebar wrench according to claim 5, characterized in that, The part where the locking block (72) and the clamping head B (71) engage is provided with ratchet teeth. When the ratchet teeth on the locking block (72) and the ratchet teeth on the clamping head B (71) are in a biting state, the locking block (72) locks the position of the clamping head B (71).

7. The rotating wheel of the open-type rebar wrench according to claim 5 or 6, characterized in that, A second torsion spring (73) is installed on the open rotating wheel (535); one end of the second torsion spring (73) abuts against the open rotating wheel (535); the other end of the second torsion spring (73) abuts against the locking block (72); the second torsion spring (73) pushes the locking block (72) to lock the clamping head B (71).

8. The reel of the open-type rebar wrench according to any one of claims 1-6, characterized in that, The lower end face of the open-end wheel (535) is provided with a mounting hole (538); a rolling bearing (5310) is installed in the mounting hole (538); a pin (539) is installed in the rolling bearing (5310).

9. An open-type rebar wrench, characterized in that, include: Power unit (10) is used to provide power; The gear set (50) is connected to the power unit (10); and The housing (30) is disposed at the front end of the power unit (10); The gear set (50) is disposed in the housing (30), and the front end of the housing (30) is provided with an opening; The gear set (50) includes: The central gear shaft (51) is connected to the power unit (10); Side gears (52) mesh with the central gear shaft (51), and there are at least two side gears (52); and A rotating wheel (53), wherein the rotating wheel (53) is the rotating wheel (53) according to any one of claims 1-8; the teeth (537) on the rotating wheel (53) mesh with the side gear (52); the rotating wheel (53) is configured to remain meshed with the side gear (52) during the rotational motion of the rotating wheel (53).

10. The open-type rebar wrench according to claim 9, characterized in that, It also includes a striking mechanism (11), which is disposed between the power unit (10) and the gear set (50). The striking mechanism (11) generates an impact torque during impact and transmits the impact torque to the gear set (50). An outer cylinder (20) is provided between the power unit (10) and the housing (30); the striking mechanism (11) is located inside the outer cylinder (20).

11. The open-type rebar wrench according to claim 9, characterized in that, It also includes a speed reducer and a torque limiter. The power unit (10) is connected to the gear set (50) through the speed reducer and the torque limiter. The speed reducer is used to reduce the speed of the power unit (10) and increase the torque. The torque limiter is used to limit the maximum torque output of the power unit (10) and protect the power unit (10) from overload.

12. The open-type rebar wrench according to claim 10, characterized in that, The outer cylinder (20) is connected to the front end of the power unit (10); the rear end of the outer cylinder (20) is equipped with an outer cylinder rear cover (21); the power output gear shaft (101) of the power unit (10) passes through the outer cylinder rear cover (21) and is connected to and drives the striking mechanism (11).

13. The open-type rebar wrench according to claim 10, characterized in that, It also includes a planetary reduction mechanism (12); the planetary reduction mechanism (12) is located at the front end of the striking mechanism (11); the planetary reduction mechanism (12) includes: a planet carrier b (121), a planetary gear b (122) and a gear ring b (123); the striking output shaft (117) of the striking mechanism (11) is provided with a gear part at its front end, and the gear part of the striking output shaft (117) of the striking mechanism (11) meshes with the planetary gear b (122) in the planet carrier b (121); the outer cylinder (20) is provided with a gear ring b (123); the planetary gear b (122) meshes with the gear ring b (123).

14. The open-type rebar wrench according to claim 13, characterized in that, The planetary reduction mechanism (12) is connected to the gear set (50) via a bevel gear set (40); the bevel gear set (40) includes a small bevel gear (41) and a large bevel gear (42); the small bevel gear (41) is connected to the planet carrier b (121); the large bevel gear (42) is mounted on the journal of the central gear shaft (51), and the small bevel gear (41) and the large bevel gear (42) mesh.

15. The open-type rebar wrench according to claim 9, characterized in that, The housing (30) includes a cover plate (31) and a bottom plate (32); an accommodating space is formed between the cover plate (31) and the bottom plate (32); The cover plate (31) and the base plate (32) are connected by a connecting component; the gear set (50) is arranged in the accommodating space; the front end of the base plate (32) is provided with an open guide ring (321), which guides the rotation of the wheel (53).

16. The open-type rebar wrench according to claim 10, characterized in that, The front end of the outer cylinder (20) is connected to the shell (30) via a connector (35); the connector (35) has a first mounting part and a second mounting part; the first mounting part is connected to the front end of the outer cylinder (20); the first mounting part is connected to the top cover (34); the top cover (34) and the second mounting part clamp the shell (30).

17. The open-type rebar wrench according to claim 9, characterized in that, A guide rail (81) is provided on one side of the housing (30); a clamping assembly is installed on the guide rail (81).

18. The open-type rebar wrench according to claim 17, characterized in that, The clamping assembly includes: a sliding sleeve (82), a clamping head A (83), and a clamping head B (84); the sliding sleeve (82) is slidably mounted on the guide rail (81); the clamping head A (83) is mounted on the sliding sleeve (82); the clamping head B (84) is connected to the clamping head A (83); clamping is performed by the clamping head A (83) and the clamping head B (84).

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