CN109888531B - Grounding wire clamp - Google Patents
Grounding wire clamp Download PDFInfo
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- CN109888531B CN109888531B CN201910044183.XA CN201910044183A CN109888531B CN 109888531 B CN109888531 B CN 109888531B CN 201910044183 A CN201910044183 A CN 201910044183A CN 109888531 B CN109888531 B CN 109888531B
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Abstract
The invention discloses a grounding wire clamp, and relates to the field of cable clamps; the sliding device comprises a fixed clamping block and a sliding clamping block, wherein a sleeve is arranged above the fixed clamping block, a sliding rod is inserted into the sleeve, a first sliding groove is formed in the top end of the sliding rod, a limiting rod coaxial with the sliding rod is inserted into the first sliding groove and is in sliding connection with the limiting rod, a first spring is arranged on the top end of the sleeve, a second spring is arranged in the first sliding groove, the sliding rod is provided with a through hole, a stay wire is connected with the bottom end of the first sliding groove, a second sliding groove is formed in the inner side wall of the sleeve, the second sliding groove comprises an opening end and a closing end, a guiding convex strip is arranged between the second sliding grooves, a plurality of sliding blocks are fixedly connected with the sliding rod, the sliding rod is provided with saw teeth, the saw teeth comprise a forward slope and a reverse slope, an inserting strip is fixedly connected with the limiting rod, a clamping groove is formed in the opening end of the second sliding groove, a first guiding convex strip is arranged on the guiding convex strip, and a second guiding slope is arranged on the inserting strip; the invention can control the opening and closing by pulling the wire, and is extremely convenient when the ground wire clamp of the extra-high voltage circuit is hung.
Description
Technical Field
The invention belongs to the field of grounding wire clamps, and particularly relates to a grounding wire clamp.
Background
The grounding wire clamp is used as a conductor connecting terminal for connecting current, has larger through-current capacity, reasonable structure and elasticity, and can always keep the durable and constant contact pressure between the wire and the wire clamp even when the wire expands with heat and contracts with cold, and the contact pressure changes little along with the change of external environment, load strips and the like. The constant and enough contact pressure and the maximized contact surface can keep very low contact resistance for a long time, and the overcurrent capacity is strong, so that the method is widely applied to power failure maintenance and construction operation in overhead transmission lines.
Chinese patent grant publication No. CN108682977A, grant publication No. 20181019, which comprises a body, a first chuck and a second chuck, wherein the first chuck is arranged on the body, the second chuck is movably connected with the body through a movable structure, and the movable structure comprises a screw rod and a through hole arranged on the body; the through hole is arranged at one end of the body far away from the first chuck, an internal thread is arranged in the through hole, an external thread section matched with the internal thread is arranged on the screw rod, the screw rod is connected with the second chuck after passing through the through hole, the ground wire clamp further comprises a clamping structure, the clamping structure comprises a transition section, a clamping pin and a clamping seat used for clamping the clamping pin, and the clamping seat is arranged on the body and is close to the through hole; the bayonet lock and the transition section are both arranged on the screw rod, and the transition section is positioned between the joint of the screw rod and the second chuck and the external thread section; in the prior art, a worker needs to hold the wire clamp to clamp the grounding wire, then needs to rotate the screw rod to clamp the grounding wire, and the difficulty is great when the extra-high voltage circuit grounding wire clamp is hung, so that the hanging is troublesome.
Disclosure of Invention
The invention aims to overcome the defect of troublesome hanging in the prior art and provides a high-efficiency ground wire clamp for hanging.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the grounding wire clamp comprises two fixed clamping blocks for clamping a grounding wire and a sliding clamping block for pressing the grounding wire, wherein the sliding clamping blocks are positioned between the fixed clamping blocks, a sleeve is arranged above the fixed clamping blocks, one end of each fixed clamping block, which is close to the sleeve, is fixedly connected with the bottom end of the sleeve, a sliding rod coaxial with the sleeve is inserted into the sleeve and is in sliding connection with the sliding rod, one end of each sliding clamping block, which is close to the sliding rod, is fixedly connected with the bottom end of the sliding rod, a first sliding groove coaxial with the sliding rod is arranged at the top end of the sliding rod, a limiting rod coaxial with the sliding rod is inserted into the first sliding groove and is in sliding connection with the limiting rod, a first spring is arranged at the top end of the sleeve and is connected with the top end of the limiting rod through the first spring, a second spring is arranged in the first sliding groove, one end of the second spring is propped against the bottom end of the first sliding groove, the other end of the second spring is propped against the bottom end of the limiting rod, the sliding rod is provided with a through hole from one end to the other end, a stay wire passes through the through hole and is connected with the bottom end of the first sliding groove, the inner side wall of the sleeve is provided with a plurality of second sliding grooves parallel to the axis of the sleeve, the second sliding grooves are distributed around the collar-shaped array of the sleeve, each second sliding groove comprises an open end and a closed end, the open end faces away from the fixed clamping block, a guiding raised strip is arranged between the second sliding grooves, the outer surface of the sliding rod is fixedly connected with a plurality of sliding blocks, one end of the sliding rod away from the sliding clamping block is provided with a plurality of saw teeth, the saw teeth are distributed around the collar-shaped array of the sliding rod and are mutually adjacent, each saw tooth comprises a forward slope and a reverse slope, the number of the saw teeth is equal to that of the second sliding grooves, the sliding blocks are positioned in the second sliding grooves and are in sliding connection with the second sliding grooves, the limiting rod is fixedly connected with a plurality of cutting bars parallel to the axis of the sliding rod at one end close to the sliding rod, the cutting bars are all located in the second sliding grooves and are in sliding connection with the second sliding grooves, a second sliding groove is formed between each cutting bar and each adjacent cutting bar, a clamping groove is formed in the opening end of each second sliding groove located between the cutting bars, a first guide slope used for guiding the cutting bars to the clamping groove or the second sliding groove is arranged at one end, away from the fixed clamping block, of each guide protruding bar, a second guide slope matched with the first guide slope is arranged at one end, close to the fixed clamping block, of each cutting bar, and the second guide slope is abutted to a forward slope consistent with the gradient direction of each second guide slope.
The sliding block always slides in the second sliding groove, when the cutting is positioned in the second sliding groove and close to the closed end of the cutting, the second guiding slope on the cutting is propped against the positive slope, the sliding clamping block is intersected with the fixed clamping block, at the moment, the invention is closed, one hand of a worker holds the fixed clamping block, the other hand pulls the pull wire, the fixed clamping block is held by the hand to prevent the fixed clamping block from being pulled, at the moment, the pull wire pulls the sliding rod to move upwards, the saw teeth on the sliding rod are propped against the second guiding slope on the cutting, so the sliding rod pushes the cutting to move away from the fixed clamping block, the cutting drives the limiting rod to move away from the fixed clamping block, and as the second guiding slope moves to the open end of the second sliding groove, under the elasticity of the first spring, pressure exists between the second guiding slope and the positive slope all the time, the second guiding slope slides along the forward slope to the junction of the forward slope and the reverse slope, the limiting rod rotates, the stay wire is released, the stay wire pulling force is reduced, the second guiding slope pushes the sliding rod to move towards the direction close to the fixed clamping block, then the second guiding slope is propped against the first guiding slope and is guided into the clamping groove, the cutting is prevented from moving towards the closed end of the second sliding groove, at the moment, compared with the initial state, the limiting rod moves towards the direction far away from the fixed clamping block by a distance, under the action of the second spring, the saw teeth always prop against the second guiding slope, namely the sliding rod always prop against the limiting rod, therefore, the sliding rod moves synchronously by a corresponding distance, the sliding clamping block also moves synchronously by a corresponding distance due to the fact that the sliding rod is fixedly connected with the sliding clamping block, at the moment, the sliding clamping block coincides with the fixed clamping block, the stay wire is pulled by workers for opening, then the fixed clamping block and the sliding clamping block naturally drop, then, the ground wire is hooked by the fixed clamping block and the sliding clamping block, at the moment, a worker pulls the stay wire by hand, and because the fixed clamping block is hooked by the ground wire, under the pulling of the stay wire, the slide bar pushes the limiting rod to move away from the fixed clamping block, at the moment, the forward slope pushes the second guiding slope to move away from the fixed clamping block, when the second guiding slope is separated from the clamping groove, the stay wire stops pulling, the second guiding slope moves onto the first guiding slope under the action of the forward slope, then moves into the second sliding groove under the action of the first guiding slope, and then the cutting slip slides towards the closed end along the second sliding groove under the action of the first spring until the upper edge of the sliding clamping block abuts against the upper side of the ground wire, and at the moment, the ground wire is clamped by the sliding clamping block and the fixed clamping block.
Preferably, the free end of the sliding clamping block is rotatably connected with a guide block.
When the ground wire is pulled to be unhooked, the guide block is arranged, and the ground wire can be hooked by the fixed clamping block and the sliding clamping block along the guide block only when the guide block is abutted against the lower side of the ground wire, so that the convenience of the invention is further improved, and in addition, the guide block can rotate to change the angle, so that the usability of the ground wire is improved.
Preferably, a first vertical plane is arranged at one end, connected with the sleeve, of the fixed clamping block, a second vertical plane is arranged at one end, connected with the sliding rod, of the sliding clamping block, the first vertical plane and the second vertical plane are located on the same plane, the plane where the first vertical plane and the second vertical plane are located is intersected with the sliding clamping block, and the plane where the first vertical plane and the second vertical plane are located is intersected with the fixed clamping block.
When the invention is manufactured, one end of the fixed clamping block and one end of the sliding clamping block are cut off to form a corner, and at the moment, when the invention is lowered to unhook the grounding wire, the upper edges of the fixed clamping block and the sliding clamping block can not scrape the grounding wire, so that the convenience of the invention is further improved.
The beneficial effects of the invention are as follows: (1) The invention can be switched back and forth between the open state and the closed state by pulling the wire, and is extremely convenient when the extra-high voltage circuit grounding wire clamp is hung; (2) The grounding wire can be hooked by the fixed clamping block and the sliding clamping block along the guide block, so that the convenience of the invention is further improved, and the guide block can rotate to change the angle, so that the usability of the grounding wire is improved; (3) When the invention is manufactured, one end of the fixed clamping block and one end of the sliding clamping block are cut off to form a corner, and at the moment, when the invention is lowered to hook the grounding wire, the upper edges of the fixed clamping block and the sliding clamping block cannot be hung on the grounding wire, so that the convenience of the invention is further improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in an open state;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the structure of the present invention in a closed state;
FIG. 4 is a schematic view of a stop lever;
FIG. 5 is a schematic view of the structure of the slide bar;
FIG. 6 is a schematic view of the structure of the sleeve in section;
FIG. 7 is a schematic illustration of another construction of a sleeve in section;
FIG. 8 is a schematic view of a first slide bar sliding state;
FIG. 9 is a schematic view of a second sliding bar sliding state;
FIG. 10 is a schematic view of a third sliding bar sliding state;
fig. 11 is a schematic structural view of the sliding rod in the fourth state.
In the figure: the sliding clamp block 1, the sliding clamp block 2, the sleeve 3, the sliding rod 4, the first sliding groove 5, the limiting rod 6, the through hole 7, the stay wire 8, the second sliding groove 9, the open end 10, the closed end 11, the guide convex strip 12, the first guide slope 14, the sliding block 15, the saw teeth 16, the forward slope 17, the reverse slope 18, the cutting 19, the second guide slope 20, the clamping groove 21, the guide block 22, the first vertical plane 23 and the second vertical plane 24.
Detailed Description
The invention is further described in detail below with reference to the attached drawings and detailed description:
fig. 1 to 11 show a grounding wire clamp, which comprises two fixed clamping blocks 1 for clamping a grounding wire and a sliding clamping block 2 for pressing the grounding wire, wherein the sliding clamping blocks 2 are positioned between the fixed clamping blocks 1, a sleeve 3 is arranged above the fixed clamping blocks 1, one end of the fixed clamping block 1, which is close to the sleeve 3, is fixedly connected with the bottom end of the sleeve 3, a sliding rod 4 coaxial with the sleeve 3 is inserted on the sleeve 3 and is in sliding connection with the sliding rod 4, one end of the sliding clamping block 2, which is close to the sliding rod 4, is fixedly connected with the bottom end of the sliding rod 4, a first sliding groove 5 coaxial with the sliding rod 4 is arranged at the top end of the sliding rod 4, a limit rod 6 coaxial with the sliding rod 4 is inserted in the first sliding groove 5 and is in sliding connection with the limit rod 6, a first spring is arranged at the top end of the sleeve 3, the top end of the sleeve 3 is connected with the top end of the limit rod 6 through the first spring, the first sliding groove 5 is internally provided with a second spring, one end of the second spring is propped against the bottom end of the first sliding groove 5, the other end of the second spring is propped against the bottom end of the limiting rod 6, the sliding rod 4 is provided with a through hole 7 from one end to the other end, a pull wire 8 passes through the through hole 7 and is connected with the bottom end of the first sliding groove 5, the inner side wall of the sleeve 3 is provided with a plurality of second sliding grooves 9 parallel to the shaft of the sleeve 3, the second sliding grooves 9 are distributed around the shaft collar-shaped array of the sleeve 3, the second sliding grooves 9 comprise an open end 10 and a closed end 11, the open end 10 faces away from the fixed clamping block 1, a guide raised strip 12 is arranged between the second sliding grooves 9, a plurality of sliding blocks 15 are fixedly connected on the outer surface of the sliding rod 4, one end of the sliding rod 4 away from the sliding clamping block 2 is provided with a plurality of saw teeth 16, the saw teeth 16 are distributed around the shaft collar-shaped array of the sliding rod 4 and are mutually close to each other, each sawtooth 16 comprises a forward slope 17 and a reverse slope 18, the number of the sawtooth 16 is equal to that of the second sliding grooves 9, the sliding blocks 15 are positioned in the second sliding grooves 9 and are in sliding connection with the second sliding grooves 9, a plurality of cutting bars 19 parallel to the axis of the sliding rod 4 are fixedly connected to one end of the limiting rod 6 close to the sliding rod 4, the cutting bars 19 are positioned in the second sliding grooves 9 and are in sliding connection with the second sliding grooves 9, a second sliding groove 9 is arranged between each cutting bar 19 and each adjacent cutting bar 19, a clamping groove 21 is formed in the opening end 10 of the second sliding groove 9 positioned between the cutting bars 19, a first guiding slope 14 for guiding the cutting bars 19 to the clamping grooves 21 or the second sliding grooves 9 is arranged at one end of the guiding convex bars 12 away from the fixed clamping block 1, a second guiding slope 20 matched with the first guiding slope 14 is arranged at one end of the cutting bar 19 close to the fixed clamping block 1, and the second guiding slope 20 is abutted against the forward slope 17 consistent with the gradient direction of the second guiding slope.
The sliding block always slides in the second sliding groove, when the cutting is positioned in the second sliding groove and close to the closed end of the cutting, the second guiding slope on the cutting is propped against the positive slope, the sliding clamping block is intersected with the fixed clamping block, at the moment, the invention is closed, one hand of a worker holds the fixed clamping block, the other hand pulls the pull wire, the fixed clamping block is held by the hand to prevent the fixed clamping block from being pulled, at the moment, the pull wire pulls the sliding rod to move upwards, the saw teeth on the sliding rod are propped against the second guiding slope on the cutting, so the sliding rod pushes the cutting to move away from the fixed clamping block, the cutting drives the limiting rod to move away from the fixed clamping block, and as the second guiding slope moves to the open end of the second sliding groove, under the elasticity of the first spring, pressure exists between the second guiding slope and the positive slope all the time, the second guiding slope slides along the forward slope to the junction of the forward slope and the reverse slope, the limiting rod rotates, the stay wire is released, the stay wire pulling force is reduced, the second guiding slope pushes the sliding rod to move towards the direction close to the fixed clamping block, then the second guiding slope is propped against the first guiding slope and is guided into the clamping groove, the cutting is prevented from moving towards the closed end of the second sliding groove, at the moment, compared with the initial state, the limiting rod moves towards the direction far away from the fixed clamping block by a distance, under the action of the second spring, the saw teeth always prop against the second guiding slope, namely the sliding rod always prop against the limiting rod, therefore, the sliding rod moves synchronously by a corresponding distance, the sliding clamping block also moves synchronously by a corresponding distance due to the fact that the sliding rod is fixedly connected with the sliding clamping block, at the moment, the sliding clamping block coincides with the fixed clamping block, the stay wire is pulled by workers for opening, then the fixed clamping block and the sliding clamping block naturally drop, then, the ground wire is hooked by the fixed clamping block and the sliding clamping block, at the moment, a worker pulls the stay wire by hand, and because the fixed clamping block is hooked by the ground wire, under the pulling of the stay wire, the slide bar pushes the limiting rod to move away from the fixed clamping block, at the moment, the forward slope pushes the second guiding slope to move away from the fixed clamping block, when the second guiding slope is separated from the clamping groove, the stay wire stops pulling, the second guiding slope moves onto the first guiding slope under the action of the forward slope, then moves into the second sliding groove under the action of the first guiding slope, and then the cutting slip slides towards the closed end along the second sliding groove under the action of the first spring until the upper edge of the sliding clamping block abuts against the upper side of the ground wire, and at the moment, the ground wire is clamped by the sliding clamping block and the fixed clamping block.
The free end of the sliding clamping block 2 is rotatably connected with a guide block 22.
When the ground wire is pulled to be unhooked, the guide block is arranged, and the ground wire can be hooked by the fixed clamping block and the sliding clamping block along the guide block only when the guide block is abutted against the lower side of the ground wire, so that the convenience of the invention is further improved, and in addition, the guide block can rotate to change the angle, so that the usability of the ground wire is improved.
The fixed clamp splice 1 is equipped with first vertical plane 23 with the one end that sleeve pipe 3 is connected, the one end that slide clamp splice 2 was connected with slide bar 4 is equipped with second vertical plane 24, first vertical plane 23 is located the coplanar with second vertical plane 24, the plane that first vertical plane 23 and second vertical plane 24 are located intersects with slide clamp splice 2, the plane that first vertical plane 23 and second vertical plane 24 are located intersects with fixed clamp splice 1.
When the invention is manufactured, one end of the fixed clamping block and one end of the sliding clamping block are cut off to form a corner, and at the moment, when the invention is lowered to unhook the grounding wire, the upper edges of the fixed clamping block and the sliding clamping block can not scrape the grounding wire, so that the convenience of the invention is further improved.
Claims (3)
1. The grounding wire clamp comprises two fixed clamping blocks for clamping a grounding wire and a sliding clamping block for pressing the grounding wire, and is characterized in that the sliding clamping blocks are positioned between the fixed clamping blocks, one end of each of the fixed clamping blocks and one end of each of the sliding clamping blocks is cut off at an angle, a sleeve is arranged above each of the fixed clamping blocks, one end of each of the fixed clamping blocks, which is close to the sleeve, is fixedly connected with the bottom end of the sleeve, a sliding rod coaxial with the fixed clamping blocks is inserted into the sleeve and is in sliding connection with the sleeve, one end of each of the sliding clamping blocks, which is close to the sliding rod, is fixedly connected with the bottom end of the sliding rod, the top end of the sliding rod is provided with a first sliding groove coaxial with the sliding rod, a limiting rod coaxial with the sliding rod is inserted into the first sliding groove and is in sliding connection with the first sliding groove, the top end of the sleeve is provided with a first spring, the top end of the sleeve is connected with the top end of the limiting rod through the first spring, and a second spring is arranged in the first sliding groove, one end of the second spring is propped against the bottom end of the first chute, the other end of the second spring is propped against the bottom end of the limiting rod, a through hole is arranged on the limiting rod from one end to the other end of the limiting rod, a stay wire passes through the through hole and is connected with the bottom end of the first chute, a plurality of second chutes parallel to the axis of the sleeve are arranged on the inner side wall of the sleeve, the second chutes are distributed around the collar-shaped array of the sleeve, each second chute comprises an open end and a closed end, the open end faces away from the fixed clamping block, a guide raised strip is arranged between the second chutes, a plurality of sliding blocks are fixedly connected on the outer surface of each sliding rod, a plurality of saw teeth are arranged at one end of each sliding rod away from the sliding clamping block, the saw teeth are distributed around the collar-shaped array of the sliding rod and are adjacent to each other, each saw tooth comprises a forward slope and a reverse slope, and the number of the saw teeth is equal to that of the second chute, the sliding block is located in the second sliding groove and is in sliding connection with the second sliding groove, a plurality of cutting bars parallel to the axis of the sliding bar are fixedly connected to one end of the limiting rod, which is close to the sliding bar, are located in the second sliding groove and are in sliding connection with the second sliding groove, a second sliding groove is arranged between each cutting bar and each adjacent cutting bar, a clamping groove is formed in the opening end of the second sliding groove located between the cutting bars, a first guide slope used for guiding the cutting bars to the clamping grooves or the second sliding groove is arranged at one end of the guide protruding bars, which is far away from the fixed clamping blocks, a second guide slope matched with the first guide slope is arranged at one end of the cutting bars, which is close to the fixed clamping blocks, and the second guide slope is abutted against a forward slope consistent with the gradient direction of the second guide slope.
2. The ground clip of claim 1, wherein the free end of the sliding clamp block is rotatably coupled to a guide block.
3. The ground clamp according to claim 1 or 2, wherein a first vertical plane is arranged at the end of the fixed clamping block connected with the sleeve, a second vertical plane is arranged at the end of the sliding clamping block connected with the sliding rod, the first vertical plane and the second vertical plane are located on the same plane, the plane of the first vertical plane and the second vertical plane is intersected with the sliding clamping block, and the plane of the first vertical plane and the second vertical plane is intersected with the fixed clamping block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044183.XA CN109888531B (en) | 2019-01-17 | 2019-01-17 | Grounding wire clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044183.XA CN109888531B (en) | 2019-01-17 | 2019-01-17 | Grounding wire clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109888531A CN109888531A (en) | 2019-06-14 |
| CN109888531B true CN109888531B (en) | 2023-10-20 |
Family
ID=66926189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910044183.XA Active CN109888531B (en) | 2019-01-17 | 2019-01-17 | Grounding wire clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109888531B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210980B (en) * | 2020-03-19 | 2020-12-15 | 吉安市协创电子科技有限公司 | Transformer lead mounting structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840969A (en) * | 1973-02-16 | 1974-10-15 | Kearney National Inc | Clamp stick |
| CN106848970A (en) * | 2017-02-23 | 2017-06-13 | 广州番禺电缆集团有限公司 | A kind of Contiuum type is to hook wire clamp |
| CN207149737U (en) * | 2017-09-15 | 2018-03-27 | 武汉立世达电力科技有限公司 | C-type self-locking wire clamp |
| CN108682977A (en) * | 2018-06-26 | 2018-10-19 | 广东电网有限责任公司 | A kind of ground wire fixture |
| CN209516057U (en) * | 2019-01-17 | 2019-10-18 | 国网浙江省电力有限公司金华供电公司 | A kind of heavy duty detergent earthing clamp |
-
2019
- 2019-01-17 CN CN201910044183.XA patent/CN109888531B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3840969A (en) * | 1973-02-16 | 1974-10-15 | Kearney National Inc | Clamp stick |
| CN106848970A (en) * | 2017-02-23 | 2017-06-13 | 广州番禺电缆集团有限公司 | A kind of Contiuum type is to hook wire clamp |
| CN207149737U (en) * | 2017-09-15 | 2018-03-27 | 武汉立世达电力科技有限公司 | C-type self-locking wire clamp |
| CN108682977A (en) * | 2018-06-26 | 2018-10-19 | 广东电网有限责任公司 | A kind of ground wire fixture |
| CN209516057U (en) * | 2019-01-17 | 2019-10-18 | 国网浙江省电力有限公司金华供电公司 | A kind of heavy duty detergent earthing clamp |
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| Publication number | Publication date |
|---|---|
| CN109888531A (en) | 2019-06-14 |
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