Ratchet grip wrench and method of use

Abstract

The present application belongs to the technical field of fastening tools, and discloses a ratchet spanner wrench and a use method, which comprises a movable ratchet tightening head and a torque wrench, the movable ratchet tightening head comprises an open pincer assembly and an elastic assembly, the open pincer assembly comprises a fixed pincer assembly and a movable pincer assembly, the front parts of the fixed pincer assembly and the movable pincer assembly are hingedly connected to form a C-shaped movable opening structure, a U-shaped inner groove is arranged on the side wall of the movable pincer assembly, the rear part of the elastic assembly is fixedly connected to the rear side wall of the fixed pincer assembly, the front part of the elastic assembly is slidingly and press-connected to the U-shaped inner groove, and the rear part of the fixed pincer assembly is fixedly connected to the front part of the torque wrench. The movable pincer plus leaf spring design of the present application can realize the clockwise tightening of the spanner in a small space by reversing the wrench without lifting, the digital display torque wrench can monitor the torque to ensure the tightening accuracy, the movable ratchet tightening head can be inserted and connected, the tightening head can be selected according to the specifications of the spanner, and the manufacturing cost is low.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fastening tools, and in particular relates to a ratchet gland head wrench and a use method. BACKGROUND

[0002] At present, the high-voltage module of a new energy vehicle widely adopts a connection mode of a gland head for fastening, so as to realize sealing of the high-voltage module. The high-voltage module specifically refers to a structure capable of converting alternating current and direct current; the gland head, also called a cable fixing head, is installed at a connection between a high-voltage line and the high-voltage module, and plays a role of leading in the high-voltage line, fixing the position of the high-voltage line and sealing the connection. Due to the existence of the high-voltage line, a conventional ratchet wrench cannot be used to tighten the gland head. Due to the limitation of the structure of the high-voltage module, the spacing between the gland heads is small, and the fastening range is small when using a conventional wrench. During the tightening process, the tool cannot be twisted in a single direction to transmit torque, and often needs to be loosened from the gland head and lifted for re-clamping, and then the wrench is twisted again. Therefore, the tightening process needs to be repeated for multiple times, the tightening time is long, the operation efficiency is low, and the tightening precision cannot be guaranteed. The gland head has different sizes, the tooth angle of the existing open ratchet wrench is fixed, and the wrench cannot be tightly matched with various gland nut specifications, thereby affecting the tightening efficiency and quality. SUMMARY

[0003] The purpose of the present application is to provide a ratchet gland head wrench and a use method. The wrench uses a movable open jaw assembly and a high-strength elastic plate spring mechanical structure based on the ratchet principle. During the rotation of the wrench, the force is transmitted, and the wrench does not need to be removed from the gland head when it reaches the physical limit. Only the wrench needs to be rotated in the opposite direction to pull the plate spring away from the movable jaw assembly, so that the movable jaw assembly loosens the gland head. After the wrench reaches the physical limit, no external force is applied to the plate spring to pull it. The plate spring automatically compresses the movable jaw assembly due to its own elasticity, and continues to clamp the gland head. The wrench can continue to twist in the clockwise direction to transmit torque without lifting the gland nut, so as to achieve the purpose of adjusting and fixing in a small space. The wrench also achieves the purpose of monitoring the torque and collecting data through the torque wrench. When the predetermined torque is reached, the wrench stops to ensure the tightening precision. The movable ratchet tightening head has low manufacturing cost and can be quickly inserted and fixed on the torque wrench. According to the specifications of the gland nut, multiple matching tightening heads are prefabricated. Before the tightening work starts, the appropriate tightening head is selected to completely match the gland nut, thereby improving the work efficiency and ensuring the tightening quality.

[0004] The specific scheme content is as follows:

[0005] A kind of ratchet head spanner, including movable ratchet wrench head and torque wrench, movable ratchet wrench head is detachably connected with torque wrench;Movable ratchet wrench head includes open pincer assembly and elastic component, open pincer assembly includes fixed jaw assembly and movable jaw assembly, the middle part side wall of fixed jaw assembly is equipped with rectangular through structure, the rear of movable jaw assembly is inserted in rectangular through structure and is hinged to the middle part of fixed jaw assembly by jaw hinge pin shaft, the front of fixed jaw assembly and movable jaw assembly constitutes C-shaped movable opening structure, the side wall of movable jaw assembly is equipped with open U-shaped inner recess away from jaw hinge pin shaft, the rear of elastic component is fixedly connected on the rear side wall of fixed jaw assembly, the front of elastic component is slidingly crimped on U-shaped inner recess, the rear of fixed jaw assembly is inserted and fixedly connected on the front of torque wrench.

[0006] The connection between the movable ratchet tightening head and the torque wrench of the present invention is detachable, and the rear part of the movable ratchet tightening head is matched and plugged into the rectangular plug-in cavity of the front plug-in part of the torque wrench, and is fixed by the cooperation of the pin and the shaft sleeve. The cooperation of the pin and the shaft sleeve can provide stable support and positioning, reduce friction and wear, and extend the service life. In actual work, the operator can select a matching movable ratchet tightening head and torque wrench according to the gland model, and plug and fix them. The torque wrench can monitor the torque and collect torque data during operation, and stop operating when the predetermined torque is reached to ensure the quality of assembly. The movable ratchet tightening head of the present invention includes an open jaw assembly and an elastic assembly. The front opening assembly is composed of a fixed jaw assembly and a movable jaw assembly hinged together, and the front ends of the two constitute a C-shaped movable opening structure. The jaw arc of the C-shaped movable opening structure should meet the requirements of being able to clamp the gland nut and not easily disengaged. The front of both the fixed jaw assembly and the movable jaw assembly are equipped with curved tooth surfaces. The multiple teeth on these tooth surfaces mate with the outer six faces of the gland nut, ensuring a snug, secure grip. The rear portion of the movable jaw assembly is inserted into the rectangular through-hole structure in the center of the fixed jaw assembly and secured by the jaw hinge pin within the first and second hinge pin holes. The movable jaw assembly can rotate circumferentially around the jaw hinge pin to tighten or loosen the gland. The outer ring of the movable jaw assembly has a U-shaped inner groove on the back, with the opening of the U facing outward. The elastic assembly includes a leaf spring, which is an L-shaped strip spring plate. One edge of the leaf spring is fixed to the rear sidewall of the fixed jaw assembly, while the other edge extends through a rectangular through-hole in the rear face of the fixed jaw assembly and is slidably pressed against the U-shaped inner groove. The U-shaped inner groove serves as a guide, and the leaf spring can extend from the outward opening of the U-shaped inner groove. When using the torque wrench of the present invention to tighten the gland, the operator aligns the opening of the open jaw assembly with the gland. Under the pressure of the leaf spring, the tooth surface of the movable jaw assembly fits the outer six sides of the gland nut, and together with the tooth surface of the fixed jaw assembly, the gland is clamped. Then, the tail end of the torque wrench is rotated clockwise to tighten the gland nut until the torque wrench is rotated to the physical limit position. The operator then rotates the torque wrench in the opposite direction. During the reverse rotation, there is only a certain friction force on the surface of the gland nut, and it will not be loosened. After the movable jaw assembly is subjected to the reverse steering force, the leaf spring is pulled away from the movable jaw assembly by the reverse external force. The movable jaw assembly is no longer subjected to the pressure of the leaf spring and loosens the gland. After the torque wrench is rotated to the limit position, the leaf spring is no longer subjected to the external force and automatically compresses the movable curved jaw under the elastic force of the leaf spring to re-clamp the gland. This is repeated multiple times until the torque wrench is tightened to the physical limit position until the value displayed on the torque wrench reaches the target torque.

[0007] Further, the fixed jaw assembly comprises a fixed arc-shaped jaw, a fixed jaw connecting part and a wrench connecting part. An arc-shaped smooth surface and a tooth surface are axially arranged on the inner wall of the fixed arc-shaped jaw. The lower end surface of the tooth surface is fixedly connected to the upper end surface of the smooth surface to form a stepped structure. The tooth surface comprises a plurality of teeth which are uniformly and radially arranged on the tooth surface. The front end of the fixed jaw connecting part is fixedly connected to the outer circle arc surface at the rear part of the fixed arc-shaped jaw. A rectangular through structure is arranged on the sidewall of the middle part of the fixed jaw connecting part. A first hinge pin hole is arranged in the middle of the upper and lower end surfaces of the fixed jaw connecting part. The rear end surface of the fixed jaw connecting part is fixedly connected to the front end surface of the wrench connecting part. A rectangular through hole is arranged on the rear end surface of the fixed jaw connecting part, which is adjacent to the U-shaped inner groove.

[0008] The front part of the fixed jaw assembly is the fixed arc-shaped jaw. The angle of the tooth surface of the fixed arc-shaped jaw and the angle of the outer hexagon of the gland nut are matched to ensure that the gland nut can be completely clamped and tightened. The front end of the fixed jaw connecting part is fixedly connected to the outer circle arc surface of the fixed arc-shaped jaw. A rectangular through structure is arranged on the sidewall of the middle part of the fixed jaw connecting part. A first hinge pin hole is arranged in the middle of the upper and lower end surfaces of the fixed jaw connecting part, which is the same in size and shape as the second hinge hole of the movable jaw. The jaw hinge pin is hinged in the first hinge hole and the second hinge hole. The fixed arc-shaped jaw and the movable arc-shaped jaw of the movable jaw assembly form a C-shaped open jaw structure. The rear part of the movable jaw assembly is inserted into the rectangular through structure and is hinged in the fixed jaw connecting part.

[0009] Further, the wrench connecting part is a rectangular cuboid structure. A first spring pin hole is arranged on the upper end surface of the wrench connecting part. A spring pin is arranged in the first spring pin hole and protrudes out of the first spring pin hole. A rectangular inner recess is arranged on the sidewall adjacent to the rectangular through hole of the wrench connecting part. Two bolt fixing holes are arranged on the rectangular inner recess.

[0010] The rear part of the fixed jaw assembly is the wrench connecting part, which is a rectangular cuboid structure. A first spring pin hole is arranged on the upper end surface of the wrench connecting part for fixing the front end of the torque wrench. The front end surface of the wrench connecting part is fixedly connected to the right side of the rear end surface of the fixed jaw connecting part. A rectangular through hole is arranged on the left side of the wrench connecting part. A rectangular inner recess is arranged on the sidewall adjacent to the plate spring of the wrench connecting part. A limit is arranged on the top end of the rectangular inner recess. Two bolt fixing holes are arranged on the sidewall of the rectangular inner recess for the edge of the plate spring to pass through the rectangular through hole and be bolted to the sidewall of the wrench connecting part. The fixed mode can also be other detachable modes for easy disassembly and maintenance.

[0011] Further, the movable jaw assembly comprises a movable arc-shaped jaw and a movable jaw connecting part, the inner wall of the movable arc-shaped jaw is provided with an arc-shaped smooth surface and a tooth surface in the axial direction, the lower end surface of the tooth surface is fixedly connected to the upper end surface of the smooth surface to form a stepped structure, the front end of the movable jaw connecting part is fixedly connected to the outer wall arc surface of the rear part of the movable arc-shaped jaw, the rear part of the movable jaw connecting part is an arc-shaped plate, the upper and lower end surfaces of the rear part of the movable jaw connecting part are provided with a second through hinge pin hole, the rear part of the movable jaw connecting part is inserted into the rectangular through structure of the fixed jaw connecting part, and the fixed jaw assembly and the movable jaw assembly are hingedly connected through a jaw hinge pin shaft hingedly connected to the first hinge pin hole and the second hinge pin hole.

[0012] The outer wall arc surface of the movable arc-shaped jaw of the movable jaw assembly is fixedly connected to the front end of the movable jaw connecting part, the inner wall of the movable arc-shaped jaw is provided with a smooth surface and a tooth surface consistent with the inner wall of the fixed arc-shaped jaw, the movable arc-shaped jaw and the fixed arc-shaped jaw are combined and clamped to clamp the gland nut, and the gland nut is tightened and fixed. The rear end of the movable jaw connecting part is inserted into the rectangular through structure of the fixed jaw connecting part, and is hingedly connected through the jaw hinge pin shaft. The smooth surface is used to better fit the nut, prevent cross-threading when tightening, and strengthen the strength of the gland, and the tooth surface is designed in a stepped structure, which can rebound through the plate spring when being tightened to about 20°, the tooth surface can slide on the nut back, and continuous reciprocating tightening can be realized, which has a function similar to a ratchet.

[0013] Further, the outer wall arc surface of the movable arc-shaped jaw is provided with a U-shaped inner groove, and the opening of the U-shaped inner groove is away from the jaw hinge pin shaft.

[0014] Further, the elastic assembly comprises a plate spring, the plate spring is an L-shaped strip-shaped spring plate, one side of the plate spring passes through the rectangular through hole, is combined with the rectangular inner recess of the wrench connecting part, and is bolted and fixed to the two bolt fixing holes, and the other side of the plate spring is slidably and press-connected to the U-shaped inner groove of the movable arc-shaped jaw.

[0015] The elastic assembly comprises a plate spring, the plate spring is a strip-shaped spring steel plate which is bent in the middle and has elasticity, the rear part of the plate spring is fixed to the side wall of the wrench connecting part, and the front end of the plate spring is elastically and limitingly press-connected to the outer wall arc surface of the movable arc-shaped jaw, so that the movable arc-shaped jaw has elastic pressure. When the plate spring is pulled away from the outer wall arc surface of the movable arc-shaped jaw by external force, the movable arc-shaped jaw loses pressure and releases the gland nut.

[0016] Further, the torque wrench comprises a plug-in part, the upper end surface of the plug-in part is provided with a second spring pin hole, the plug-in part is arranged at the front end of the torque wrench, the front end surface of the plug-in part is inwardly recessed to form a plug-in cavity, the wrench connecting part is plug-connected into the plug-in cavity and is elastically clamped and fixed to the second spring pin hole through the spring pin.

[0017] The plug-in part of the torque wrench is arranged at the front end of the torque wrench, and an inner plug-in cavity is arranged on the front end face, the shape and size of the plug-in cavity are matched with the wrench connecting part, the wrench connecting part is inserted into the plug-in cavity, and when the spring pin enters the plug-in cavity, the spring pin is like the first spring pin hole, when reaching the second spring pin hole, the spring pin is not pressed out of the second spring pin hole and is clamped, when disassembling, the spring pin is manually pressed to make it retract into the second spring pin hole, and the wrench connecting part is pulled out.

[0018] Further, the torque wrench is a digital torque wrench, further comprising a wrench shell, a torque sensor, a digital display assembly and a battery, the torque sensor is arranged at the front part in the wrench shell, the digital display assembly is arranged at the middle part of the wrench shell, and the torque sensor and the digital display assembly are electrically connected with the battery respectively.

[0019] The torque wrench is prior art, and the internal structure will not be described in detail. The movable ratchet wrench head is inserted and fixed on the front end of the torque wrench, and torque monitoring and data collection can be carried out during the tightening process, the assembly torque is guaranteed, the design requirements are met, and the assembly quality is high.

[0020] Further, the material of the open jaw assembly is super-high-strength steel, and the material of the leaf spring is high-carbon spring steel.

[0021] The open jaw assembly of the present application preferably adopts high-strength and high-toughness 42 chromium molybdenum alloy material, and the leaf spring adopts 65 manganese spring steel, which is one of the most common high-carbon spring steels and has good comprehensive mechanical properties, especially the work hardening effect is remarkable.

[0022] A use method of a ratchet head wrench, characterized in that the steps are as follows:

[0023] S10, an operator selects a matched movable ratchet wrench head according to the type of the ratchet head, inserts and clamps the movable ratchet wrench head to the torque wrench, aligns the opening of the open jaw assembly with the ratchet head, and under the pressure of the leaf spring, the teeth of the tooth surface are matched and combined with the outer six surfaces of the ratchet head nut, so that the movable ratchet wrench head and the ratchet head are clamped, and the clamping operation of the ratchet head wrench and the ratchet head is completed.

[0024] S11, the operator holds the tail part of the torque wrench and rotates the ratchet head nut clockwise until the torque wrench rotates to the physical limit position.

[0025] S12, the operator rotates the torque wrench in the opposite direction, the leaf spring is pulled away from the movable arc-shaped jaw under the reverse external force, the movable arc-shaped jaw is no longer pressed by the leaf spring and releases the ratchet head, after the torque wrench rotates to the limit position, the leaf spring is no longer pulled by the external force and automatically presses the movable arc-shaped jaw to clamp the ratchet head under the elastic force of the leaf spring.

[0026] S13, again rotate the described ratchet head wrench to the physical limit position, repeat the above operation until the value displayed by the torque wrench reaches the target torque.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. The present application uses the principle of ratchet to adopt a movable opening pliers with a high-strength elastic plate spring mechanical structure, and through the force transmission in the process of rotating the wrench, the wrench does not need to leave the head when rotating to the physical limit, only needs to reverse the wrench, pull the plate spring away from the movable pliers assembly, loosen the head, and the wrench no longer applies external force to the plate spring after reaching the physical limit, the plate spring automatically tightens the movable pliers assembly by its own elastic force, clamps the head, and the wrench can continue to twist the torque in the clockwise direction, so as to achieve the purpose of small space adjustment and fixation;

[0029] 2. The present application realizes the purpose of monitoring and data collection of torque through the torque wrench, and can stop when reaching the predetermined torque, so as to ensure the assembly quality;

[0030] 3. The movable ratchet tightening head of the present application can be quickly assembled and disassembled, has low manufacturing cost, can better clamp different specifications of head nuts, and improves the tightening efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a perspective view of the ratchet head wrench of the present application;

[0032] Figure 2 is a side view of the ratchet head wrench of the present application;

[0033] Figure 3 is a structure schematic view of the fixed pliers assembly of the present application;

[0034] Figure 4 is a structure schematic view of the movable pliers assembly of the present application.

[0035] In the figure:

[0036] 1. A ratchet wrench; 1.1. open jaw assembly; 1.11. fixed jaw assembly; 1.111. rectangular through structure; 1.112. fixed arc jaw; 1.113. fixed jaw connecting part; 1.1131. first hinge pin hole; 1.1132. rectangular through hole; 1.114. wrench connecting part; 1.1141. first spring pin hole; 1.1142. rectangular recess; 1.1143. bolt fixing hole; 1.12. movable jaw assembly; 1.121. U-shaped recess; 1.122. movable arc jaw; 1.123. movable jaw connecting part; 1.1231. second hinge pin hole; 1.2. elastic assembly; 1.21. plate spring; 1.3. jaw hinge pin shaft; 1.4. smooth surface; 1.5. tooth surface; 2. torque wrench; 2.1. insertion part; 2.10. second spring pin hole; 2.11. insertion cavity; 2.2. wrench housing; 2.3. torque sensor; 2.4. digital display assembly; 2.5. battery. DETAILED DESCRIPTION

[0037] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall into the scope of protection of the present application.

[0038] The terms used in the present application are only for the purpose of describing particular embodiments and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two.

[0039] It should be noted that the terms "front", "back", "inner", "outer", "left", "right" and the like used in the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] It should be particularly noted that the symbols and numbers existing in the specification, if not marked in the description, are not the figure marks.

[0041] The embodiments of the present application provided, i.e. the embodiments of the ratchet wrench and the use method, will be described below with reference to the accompanying drawings. Figure 1 、 Figure 2 、 Figure 3 and Figure 4Detailed description will be made.

[0042] Embodiment 1

[0043] See Figure 1 As shown in the figure, a kind of ratchet head spanner, including movable ratchet wrench head 1 and torque spanner 2, movable ratchet wrench head 1 is detachably connected with torque spanner 2;Movable ratchet wrench head 1 includes open pincer assembly 1.1 and elastic assembly 1.2, open pincer assembly 1.1 includes fixed jaw assembly 1.11 and movable jaw assembly 1.12, the middle part side wall of fixed jaw assembly 1.11 is provided with rectangular through structure 1.111, the rear part of movable jaw assembly 1.12 is inserted into rectangular through structure 1.111 and is hinged to the middle part 1.11 of fixed jaw assembly by jaw hinge pin 1.3, the front part of fixed jaw assembly 1.11 and movable jaw assembly 1.12 constitutes C-shaped movable opening structure, the side wall of movable jaw assembly 1.12 is provided with U-shaped inner recess 1.121 away from jaw hinge pin 1.3, the rear part of elastic assembly 1.2 is fixedly connected on the rear part side wall of fixed jaw assembly 1.11, the front part of elastic assembly 1.2 is slidingly pressed on U-shaped inner recess 1.121, the rear part of fixed jaw assembly 1.11 is inserted and fixedly connected to the front part of torque spanner 2.

[0044] See Figure 2 As shown in the figure, fixed jaw assembly 1.11 includes fixed arc-shaped jaw 1.112, fixed jaw connecting portion 1.113 and spanner connecting portion 1.114, the inner circle side wall of fixed arc-shaped jaw 1.112 is axially provided with arc-shaped smooth surface 1.4 and tooth surface 1.5, the lower end surface of tooth surface 1.5 is fixedly connected to the upper end surface of smooth surface 1.4 to form a stepped structure, tooth surface 1.5 includes a plurality of teeth, which are uniformly and spaced apart radially on tooth surface 1.5, the front end of fixed jaw connecting portion 1.113 is matched and fixedly connected to the outer circle arc surface of the rear part of fixed arc-shaped jaw 1.112, the rectangular through structure 1.111 is provided on the side wall of the middle part of fixed jaw connecting portion 1.113, the middle part of the upper and lower end surfaces of fixed jaw connecting portion 1.113 is provided with through first hinge pin hole 1.1131, the rear end surface of fixed jaw connecting portion 1.113 is fixedly connected to the front end surface of spanner connecting portion 1.114, rectangular through hole 1.1132 is provided on the rear end surface of fixed jaw connecting portion 1.113, and rectangular through hole 1.1132 is adjacent to U-shaped inner recess 1.121.

[0045] The wrench connecting part 1.114 is a cuboid structure, and a first spring pin hole 1.1141 is arranged on the upper end face of the wrench connecting part 1.114, a spring pin is arranged in the first spring pin hole 1.1141, and the spring pin elastically protrudes out of the first spring pin hole 1.1141. A rectangular recessed part 1.1142 is arranged on the side wall of the wrench connecting part 1.114 adjacent to the rectangular through hole 1.1132, and two bolt fixing holes 1.1143 are arranged on the rectangular recessed part 1.1142 in a spaced manner.

[0046] As shown in Figure 3 The movable jaw assembly 1.12 includes a movable arc-shaped jaw 1.122 and a movable jaw connecting part 1.123. An arc-shaped smooth surface 1.4 and a tooth surface 1.5 are axially arranged on the inner circle side wall of the movable arc-shaped jaw 1.122. The lower end face of the tooth surface 1.5 is fixedly connected to the upper end face of the smooth surface 1.4 to form a stepped structure. The front end of the movable jaw connecting part 1.123 is fixedly connected to the outer circle arc surface at the rear part of the movable arc-shaped jaw 1.122. The rear part of the movable jaw connecting part 1.123 is an arc-shaped plate. Second hinge pin holes 1.1231 are arranged on the upper and lower end faces of the rear part of the movable jaw connecting part 1.123. The rear part of the movable jaw connecting part 1.123 is inserted into the rectangular through structure 1.111 of the fixed jaw connecting part 1.113. The fixed jaw assembly 1.11 and the movable jaw assembly 1.12 are hingedly connected through a jaw hinge pin shaft 1.3 hingedly connected in the first hinge pin hole 1.1131 and the second hinge pin hole 1.1231.

[0047] A U-shaped recessed groove 1.121 is arranged on the outer circle arc surface of the movable arc-shaped jaw 1.122, and the opening of the U-shaped recessed groove 1.121 is away from the jaw hinge pin shaft 1.3.

[0048] As shown in Figure 2 The elastic assembly 1.2 includes a leaf spring 1.21. The leaf spring 1.21 is an L-shaped strip-shaped spring plate. One side of the leaf spring 1.21 passes through the rectangular through hole 1.1132, is attached to the rectangular recessed part 1.1142 of the wrench connecting part 1.114, and is bolted to the two bolt fixing holes 1.1143. The other side of the leaf spring 1.21 is slidingly pressed on the U-shaped recessed groove 1.121 of the movable arc-shaped jaw 1.122.

[0049] The torque wrench 2 includes a plug-in part 2.1. A second spring pin hole 2.10 is arranged on the upper end face of the plug-in part 2.1. The plug-in part 2.1 is arranged at the front end of the torque wrench 2. A plug-in cavity 2.11 is arranged in the front end face of the plug-in part 2.1. The wrench connecting part 1.114 is matched and inserted into the plug-in cavity 2.11 and is fixedly connected to the second spring pin hole 2.10 through a spring elastic pin.

[0050] The torque wrench 2 is a digital torque wrench, further comprising a wrench housing 2.2, a torque sensor 2.3, a digital display assembly 2.4 and a battery 2.5, the torque sensor 2.3 is arranged at the front of the wrench housing 2.2, the digital display assembly 2.4 is arranged at the middle of the wrench housing 2.2, and the torque sensor 2.3 and the digital display assembly 2.4 are electrically connected to the battery 2.5 respectively.

[0051] The open jaw assembly 1.1 is made of ultra-high strength steel, and the leaf spring 1.21 is made of high-carbon spring steel.

[0052] Embodiment 2:

[0053] The application also provides a use method of the ratchet head wrench, comprising the following steps:

[0054] S10, the operator selects the matched movable ratchet tightening head 1 according to the head type, inserts and connects the movable ratchet tightening head 1 to the torque wrench 2, aligns the opening of the open jaw assembly 1.1 with the head, and the teeth of the tooth surface 1.5 are matched and combined with the outer six surfaces of the head nut under the pressure of the leaf spring 1.21, so that the clamping of the movable ratchet tightening head 1 and the head is realized, and the sleeve connection operation of the ratchet head wrench and the head is completed;

[0055] S11, the operator rotates the head nut clockwise by hand holding the tail of the torque wrench 2, until the torque wrench 2 rotates to the physical limit position;

[0056] S12, the operator rotates the torque wrench 2 in the opposite direction, the leaf spring 1.21 is pulled away from the movable arc-shaped jaw 1.122 under the reverse turning force, the movable arc-shaped jaw 1.122 is no longer pressed by the leaf spring 1.21 to loosen the head, and after the torque wrench 2 rotates to the limit position, the leaf spring 1.21 is no longer pulled by the external force, and automatically presses the movable arc-shaped jaw 1.122 to re-clamp the head under the elastic force of the leaf spring 1.21;

[0057] S13, the ratchet head wrench is rotated to the physical limit position again, and the above operation is repeated until the value displayed by the torque wrench 2 reaches the target torque.

[0058] The above embodiments are only used to illustrate the technical solutions of the application, but not to limit it; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A ratchet gland wrench, characterized in that: The invention comprises a movable ratchet tightening head (1) and a torque wrench (2), wherein the movable ratchet tightening head (1) and the torque wrench (2) are detachably connected; the movable ratchet tightening head (1) comprises an open-end pliers assembly (1.1) and an elastic assembly (1.2); the open-end pliers assembly (1.1) comprises a fixed jaw assembly (1.11) and a movable jaw assembly (1.12); a rectangular through-structure (1.111) is provided on the middle side wall of the fixed jaw assembly (1.11); the rear portion of the movable jaw assembly (1.12) is inserted into the rectangular through-structure (1.111) and is connected to the movable jaw assembly (1.12) via a jaw hinge pin. The shaft (1.3) is hinged to the middle part (1.11) of the fixed jaw assembly, the front part of the fixed jaw assembly (1.11) and the movable jaw assembly (1.12) form a C-shaped movable opening structure, the side wall of the movable jaw assembly (1.12) is provided with a U-shaped inner groove (1.121) with an opening away from the jaw hinge pin (1.3), the rear part of the elastic assembly (1.2) is fixedly connected to the rear side wall of the fixed jaw assembly (1.11), the front part of the elastic assembly (1.2) is slidably pressed on the U-shaped inner groove (1.121), and the fixed jaw assembly (1 .11) is inserted into the rear part of the torque wrench (2) and fixedly connected to the front part of the movable jaw assembly (1.12), the movable arc-shaped jaw (1.122) and the movable jaw connecting part (1.123), the inner ring side wall of the movable arc-shaped jaw (1.122) is axially provided with an arc-shaped smooth surface (1.4) and a tooth surface (1.5), the lower end surface of the tooth surface (1.5) is fixedly connected to the upper end surface of the smooth surface (1.4) to form a stepped structure, and the front end of the movable jaw connecting part (1.123) is matched and fixedly connected to the outer end of the rear part of the movable arc-shaped jaw (1.122). On the arc surface, the rear part of the movable jaw connecting part (1.123) is an arc-shaped plate, and the upper and lower end surfaces of the rear part of the movable jaw connecting part (1.123) are provided with a through second hinge pin hole (1.1231), the rear part of the movable jaw connecting part (1.123) is inserted into the rectangular through structure (1.111) of the fixed jaw connecting part (1.113), and the fixed jaw assembly (1.11) and the movable jaw assembly (1.12) are hinged through the jaw hinge pin shaft (1.3) hinged in the first hinge pin hole (1.1131) and the second hinge pin hole (1.1231).

2. The ratchet gland wrench according to claim 1, characterized in that: The fixed jaw assembly (1.11) includes a fixed arc-shaped jaw (1.112), a fixed jaw connecting portion (1.113) and a wrench connecting portion (1.114). An arc-shaped smooth surface (1.4) and a tooth surface (1.5) are axially arranged on the inner ring side wall of the fixed arc-shaped jaw (1.112). The lower end surface of the tooth surface (1.5) is fixedly connected to the upper end surface of the smooth surface (1.4) to form a stepped structure. The tooth surface (1.5) includes a plurality of teeth, and the plurality of teeth are radially evenly spaced on the tooth surface (1.5). The front end of the fixed jaw connecting portion (1.113) matches the fixed connecting portion. A rectangular through structure (1.111) is provided on the side wall of the middle part of the fixed jaw connecting part (1.113) on the outer arc surface of the rear part of the fixed arc-shaped jaw (1.112); a through first hinge pin hole (1.1131) is provided in the middle of the upper and lower end surfaces of the fixed jaw connecting part (1.113); the rear end surface of the fixed jaw connecting part (1.113) is fixedly connected to the front end surface of the wrench connecting part (1.114); a rectangular through hole (1.1132) is provided on the rear end surface of the fixed jaw connecting part (1.113); and the rectangular through hole (1.1132) is adjacent to the U-shaped inner groove (1.121).

3. The ratchet gland wrench according to claim 2, characterized in that: The wrench connecting portion (1.114) is a rectangular parallelepiped structure. A first spring pin hole (1.1141) is provided on the upper end surface of the wrench connecting portion (1.114). A spring pin is provided in the first spring pin hole (1.1141). The spring pin elastically protrudes outside the first spring pin hole (1.1141). A rectangular recessed portion (1.1142) is provided on a side wall of the wrench connecting portion (1.114) adjacent to the rectangular through hole (1.1132). Two bolt fixing holes (1.1143) are provided on the rectangular recessed portion (1.1142) at intervals.

4. The ratchet gland wrench according to claim 3, characterized in that: A U-shaped inner groove (1.121) is provided on the outer arc surface of the movable arc-shaped jaw (1.122), and the opening of the U-shaped inner groove (1.121) is away from the jaw hinge pin (1.3).

5. The ratchet gland wrench according to claim 4, characterized in that: The elastic component (1.2) includes a leaf spring (1.21), which is a strip spring plate with an L-shaped structure. One side of the leaf spring (1.21) passes through a rectangular through hole (1.1132), fits on the rectangular inner recess (1.1142) of the wrench connecting part (1.114), and is bolted to two bolt fixing holes (1.1143). The other side of the leaf spring (1.21) is slidably pressed on the U-shaped inner groove (1.121) of the movable arc-shaped jaw (1.122).

6. The ratchet gland wrench according to claim 5, characterized in that: The torque wrench (2) comprises a plug-in portion (2.1), a second spring pin hole (2.10) being provided on the upper end surface of the plug-in portion (2.1), the plug-in portion (2.1) being arranged at the front end of the torque wrench (2), a plug-in cavity (2.11) being provided inwardly concavely on the front end surface of the plug-in portion (2.1), and the wrench connecting portion (1.114) being matched and plugged into the plug-in cavity (2.11) and being fixed in the second spring pin hole (2.10) by elastic snap connection of a spring pin.

7. The ratchet gland wrench according to claim 6, characterized in that: The torque wrench (2) is a digital display torque wrench, further comprising a wrench housing (2.2), a torque sensor (2.3), a digital display assembly (2.4), and a battery (2.5); the torque sensor (2.3) is arranged at the front portion of the wrench housing (2.2); the digital display assembly (2.4) is arranged at the middle portion of the wrench housing (2.2); and the torque sensor (2.3) and the digital display assembly (2.4) are respectively electrically connected to the battery (2.5).

8. The ratchet gland wrench according to claim 7, characterized in that The material of the opening pliers assembly (1.1) is ultra-high strength steel, and the material of the leaf spring (1.21) is high carbon spring steel.

9. A method for using the ratchet gland wrench according to claim 8, characterized in that: Here are the steps: S10. The operator selects a matching active ratchet tightening head (1) according to the cable gland model, plugs the active ratchet tightening head (1) into the torque wrench (2), aligns the opening of the open-end pliers assembly (1.1) with the cable gland, and under the pressure of the leaf spring (1.21), the teeth of the tooth surface (1.5) of the active arc-shaped jaws (1.122) match and fit with the outer six sides of the cable gland nut, thereby achieving the clamping of the active ratchet tightening head (1) and the cable gland, and completing the clamping operation of the ratchet cable gland wrench and the cable gland; S11. The operator holds the tail end of the torque wrench (2) and tightens the gland nut clockwise until the torque wrench (2) is rotated to the physical limit position; S12. The operator rotates the torque wrench (2) in the opposite direction. After the movable arc-shaped jaw (1.122) is subjected to the reverse steering force, the leaf spring (1.21) is pulled away from the movable arc-shaped jaw (1.122) by the reverse external force. The movable arc-shaped jaw (1.122) is no longer subjected to the pressure of the leaf spring (1.21) and releases the gland. After the torque wrench (2) is rotated to the limit position, the leaf spring (1.21) is no longer subjected to the external force and automatically presses the movable arc-shaped jaw (1.122) under the elastic force of the leaf spring (1.21) to re-tighten the gland. S13, tighten the ratchet gland wrench again to the physical limit position, and repeat the above operation until the value displayed by the torque wrench (2) reaches the target torque.

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