CN114469205B - Spreader convenient for measuring spreading force - Google Patents
Spreader convenient for measuring spreading force Download PDFInfo
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- CN114469205B CN114469205B CN202210092823.6A CN202210092823A CN114469205B CN 114469205 B CN114469205 B CN 114469205B CN 202210092823 A CN202210092823 A CN 202210092823A CN 114469205 B CN114469205 B CN 114469205B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
- A61B2090/065—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure
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Abstract
The invention discloses a spreader convenient for measuring the magnitude of spreading force, which comprises a left clamping arm and a right clamping arm which is arranged vertically and parallel to the left clamping arm, wherein a guide ring with a square section is fixed at the lower end of the right clamping arm, a transparent guide tube which is matched with the guide ring is inserted in the guide ring, the left end of the guide tube is fixed on the left clamping arm, the upper side of the front end of the guide tube is provided with a tension scale mark for displaying the magnitude of spreading force, the lower side of the front end of the guide tube is provided with a width scale mark which corresponds to the left end face of the guide ring and displays the magnitude of spreading width, a spring tension meter mechanism which corresponds to the tension scale mark is arranged in the guide tube, and a handle mechanism which is convenient for spreading the left clamping arm and the right clamping arm is connected between the lower end of the guide ring and the right end of the spring tension meter mechanism. The arrangement of the guide ring and the guide tube enables the left clamping arm and the right clamping arm to open left and right in parallel, thus being convenient for directly measuring and calculating the magnitude of the opening force without using the lever principle.
Description
Technical Field
The invention relates to the field of bone joint distraction, in particular to a distractor convenient for measuring the magnitude of distraction force.
Background
Total Knee Arthroplasty (TKA) has become the standard treatment for end-stage knee osteoarthritis, with a good rate of TKA treatment of about 80%, and how to obtain an ideal, controllable flexion-extension gap balance during surgery is an important guarantee for postoperative functional rehabilitation. At present, balance of flexion and extension gaps is often obtained clinically through the anatomical structure, clinical experience, osteotomy module and other modes of a patient, and a special opening device is lacked to finish operation in operation, so that certain deviation can be caused. Moreover, the existing clinically usable spreader is a V-shaped spreader, the spreading width is measured on one hand by utilizing the lever principle, the spreading force and the width are calculated according to the lever principle through the length of a front side arm of force, and obvious errors exist, because in actual operation, the part of the spreader, which is contacted with a patient, is not fixed, is deep and shallow, the length of the arm of force can be changed, the measured spreading force and the width are inaccurate, misguidance is easily brought to judgment of operation, the possible accurate point of spreading width is measured independently, but the spreading force cannot be measured simultaneously, and the spreading force is measured independently, so that the spreading width cannot be measured accurately, and the problem of the technical personnel in the field is solved rapidly.
Disclosure of Invention
The invention aims to provide a spreader which is convenient for measuring the spreading force so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a strut convenient to measure and strut force size, includes the left arm lock of vertical setting and is on a parallel with the right arm lock of left arm lock, the lower extreme of right arm lock is fixed with the cross-section and is square guide ring, and peg graft in the guide ring and have the guide tube of transparent looks adaptation, the left end of guide tube is fixed on left arm lock, and the front end upside of guide tube is provided with the tension scale mark that shows the force size that struts, the front end downside of guide tube is provided with the width scale mark that shows the width size that struts that corresponds with the guide ring left end face, and installs the spring tension gauge mechanism that corresponds with the tension scale mark in the guide tube, be connected with the handle mechanism that conveniently struts left arm lock and right arm lock between the lower extreme of guide ring and the right-hand member of spring tension gauge mechanism. The arrangement of the guide ring and the guide tube enables the left clamping arm and the right clamping arm to open left and right in parallel, so that the opening force can be measured directly, the spring tension meter mechanism does not use the lever principle and moves in the guide tube to correspond to the tension scale marks.
The spring tension meter mechanism comprises a square sliding block which is arranged in the guide pipe and is matched with the guide pipe in cross section, the right end of the sliding block is fixedly provided with a push rod which penetrates out of the guide pipe right, the right end of the guide pipe is provided with a guide hole corresponding to the push rod, the right ends of the sliding block and the guide pipe are provided with vent holes which penetrate right, and the sliding block is connected with the right end of the inner cavity of the guide pipe through a spring sleeved on the push rod. When the contact joint is not unfolded, the spring is not stretched, and the left end of the sliding block is aligned to the zero-tension scale of the tension scale line. The left-right movement is realized, and the support is not carried out through the lever principle, so that the reading of the tension scale mark is the actual opening force, and the tension scale mark is more accurate.
The lower extreme of downside uide bushing is pegged graft and is square stop lever in ascending cross-section, and cup joints the guide cylinder of fixing on downside uide bushing on the stop lever, the lower extreme of stop lever is fixed with the buckle to the right, and is connected through the rubber strip between buckle and the guide cylinder, the lower extreme equidistant draw-in groove that is equipped with that corresponds with the stop lever of stand pipe, and the up end of stop lever is the inclined plane that makes things convenient for draw-in groove extrusion slip in with being connected of right-hand member face. The inclined surface is arranged to enable the stop rod to slide out of the clamping groove when sliding rightwards, and brake when sliding leftwards.
The handle mechanism comprises a left handle which is hinged to the lower end of the guide ring, the right end of the push rod is hinged to a right handle through a downward connecting rod, the left handle and the right handle are crossed to form an X shape, and the left handle and the right handle are hinged to each other at the crossing position. The lever principle is utilized, and the pinching is labor-saving.
The lower extreme of buckle is connected with the stretching strap that wears out left handle downwards, and the stretching strap alternates about the length direction of left handle, the right-hand member in the handheld one side of left handle is fixed to the end of stretching strap, and has seted up the jack that supplies the stretching strap to pass on the left handle, the right-hand member of the handheld one side of left handle is crooked left and is the recess that conveniently pushes down the stretching strap left. When the clamping device is used, the pull belt and the right handle on the groove are pinched, the pull belt pulls the buckle plate, so that the stop rod slides out of the clamping groove, in this way, the stop rod can be clamped into the clamping groove when the clamping device is slowly loosened, the left clamping arm and the right clamping arm are limited to move, fixation is realized, when the left clamping arm and the right clamping arm are required to be close, the left clamping arm and the right clamping arm are slowly loosened, the distance is reduced, the left clamping arm and the right clamping arm are suddenly loosened, or the loosening is quickened, the stop rod can be clamped into the clamping groove, because the distance from the stop rod to the clamping groove is very small, the stop rod can be clamped in preferentially, and the guide ring can move leftwards or not move, so that fixation is realized.
Preferably, the upper ends of the left clamping arm and the right clamping arm are bent backwards in an arc mode, the left clamping arm and the right clamping arm are convenient to insert between joints, clamping plates for increasing the supporting area are fixed at the rear ends of the left clamping arm and the right clamping arm, and the supporting area is increased.
Preferably, the right end of the guide ring is provided with an upper guide plate and a lower guide plate which are sleeved on the guide pipe. The guide pipe is guided left and right, the frame is not formed here, the front side is mainly prevented from shielding the tension scale marks, the front end and the rear end of the guide plate are bent inwards to form a part, and front-rear positioning and guiding are realized.
Preferably, a guiding sleeve sleeved on the push rod for guiding is fixed on the guiding hole. The guiding function enables the push rod to move and stretch more stably.
Compared with the prior art, the invention has the beneficial effects that:
1. the left clamp arm and the right clamp arm are connected through the guide ring and the guide tube, so that horizontal parallel movement is realized, the lever principle is separated, the stress is equivalent, no proportion exists, the guide tube is internally provided with the sliding block, the guide tube, the sliding block, the push rod and the spring are combined to form a force measuring mechanism similar to a spring tension meter, the relative movement of the guide ring and the guide tube is realized through the left clamp arm and the right clamp arm, before the opening is started, the spring is not stretched, the sliding block is aligned with the starting point of a tension scale line, the spring is stretched, the spring is similar to a spring balance, therefore, the direct numerical value of the opening force is realized, the measurement is more accurate, the guide ring corresponds to the numerical value of the force point when the left clamp arm and the right clamp arm are opened, the measurement is more visual, the width scale line and the tension scale line are displayed on the guide tube, and the guide tube with square section is convenient to watch, and the guide arm and the right clamp arm are also required to be opened by the help of the parallel tension, so that the parallel tension is realized;
2. the left handle and the right handle are hinged to drive the guide ring and the push rod to move, so that the lever principle is utilized to reduce the force, and meanwhile, the parallel movement of the left clamping arm and the right clamping arm is not influenced;
3. the stop rod and the rubber strip are arranged, so that automatic clamping can be realized, manual clamping is not needed, and the automatic clamping device is more convenient;
4. the draw-in strip and the right handle on the recess are pressed to the pinching, draw-in strip pulling buckle, thereby make the dead lever roll-off draw-in groove, like this, the dead lever can block into the draw-in groove when slowly loosening, restriction left arm lock and right arm lock remove, realize fixedly, when needing to make left arm lock and right arm lock be close to, reduce and prop up distance and dynamics, loosen suddenly, perhaps loosen fast, the dead lever can block into the draw-in groove, because the dead lever is very little to the distance of draw-in groove, the card is gone into very easily, can block into preferentially, the distance that the guide ring moved left is very little or comes out of the motion like this, realize fixedly, prop up dynamics size and width adjustment just very convenient like this, direct pinching just can be realized.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a right side view of the present invention;
FIG. 4 is a first isometric view of the invention;
FIG. 5 is a second axial side view of the present invention;
FIG. 6 is an exploded view of the present invention;
FIG. 7 is a front view of a second embodiment of the present invention;
fig. 8 is an isometric view of a second embodiment of the invention.
In the figure: 1. a left clamp arm; 11. a right clamp arm; 12. a clamping plate; 13. a left handle; 14. a right handle; 2. a guide ring; 21. a guide tube; 22. tension graduation marks; 23. a slide block; 24. a push rod; 25. ventilation holes; 26. a spring; 27. a guide plate; 28. a guide sleeve; 3. width scale marks; 4. a stop lever; 41. a guide cylinder; 42. a buckle plate; 43. a rubber strip; 44. a clamping groove; 5. pulling a belt; 51. a groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 6, the present invention provides a technical solution of an distractor for measuring the magnitude of an distracting force: the utility model provides a strut convenient to measure and strut force size, left arm lock 1 and be on a parallel with left arm lock 1's right arm lock 11 of vertical setting, right arm lock 11's lower extreme is fixed with the cross-section and is square guide ring 2, and peg graft in the guide ring 2 and have transparent looks adaptation stand pipe 21, the left end of stand pipe 21 is fixed on left arm lock 1, and the front end upside of stand pipe 21 is provided with the tension scale mark 22 that shows the force size of strutting, the front end downside of stand pipe 21 is provided with the width scale mark 3 that shows the width size of strutting that corresponds with guide ring 2 left end face, and install the spring tension gauge mechanism that corresponds with tension scale mark 22 in the stand pipe 21, be connected with the handle mechanism that conveniently strut left arm lock 1 and right arm lock 11 between the lower extreme of guide ring 2 and the right-hand member of spring tension gauge mechanism. The arrangement of the guide ring 2 and the guide tube 21 enables the left clamping arm 1 and the right clamping arm 11 to open horizontally, thus being convenient for directly measuring and calculating the opening force, and the spring tension meter mechanism corresponds to the tension scale mark 22 by moving in the guide tube 21 without the help of the lever principle.
The upper ends of the left clamping arm 1 and the right clamping arm 11 are bent backwards in an arc mode so as to be convenient to insert between joints, clamping plates 12 for increasing the supporting area are fixed at the rear ends of the left clamping arm 1 and the right clamping arm 11, and the supporting area is increased.
The spring tension meter mechanism comprises a slider 23 which is arranged in a guide tube 21 and is square in cross section, the right end of the slider 23 is fixedly provided with a push rod 24 which penetrates out of the guide tube 21 right, the right end of the guide tube 21 is provided with a guide hole corresponding to the push rod 24, the right ends of the slider 23 and the guide tube 21 are provided with vent holes 25 which penetrate right, and the slider 23 is connected with the right end of an inner cavity of the guide tube 21 through a spring 26 sleeved on the push rod 24. When the contact joint is not distracted, the spring 26 is not stretched and the left end of the slider 23 is aligned with the zero tension graduation of the tension graduation mark 22. Here, the left-right movement is realized, and the support is not performed through the lever principle, so that the reading of the tension graduation mark 22 is the actual opening force, and the reading is more accurate. The right end of the guide ring 2 is provided with an upper guide plate 27 and a lower guide plate 27 which are sleeved on the guide tube 21. The guide tube 21 is guided left and right, and is not framed, so that the front side is mainly prevented from shielding the tension graduation marks 22, and the front and rear ends of the guide plate 27 are bent inwards to form front and rear positioning guide. A guiding sleeve 28 for guiding is fixed on the guiding hole and sleeved on the push rod 24. The guiding function makes the movement and the extension of the push rod 24 smoother. The combination of guide tube 21, slide 23, push rod 24 and spring 26 is similar to a spring tension meter, and the principle is the same. In addition, the starting value of the width graduation mark 3 may include the thicknesses of the left clip arm 1 and the right clip arm 11, which is more accurate.
The lower end of the lower guide sleeve 28 is inserted with a stop rod 4 with an upward square section, the stop rod 4 is sleeved with a guide cylinder 41 fixed on the lower guide sleeve 28, the lower end of the stop rod 4 is fixed with a right pinch plate 42, the pinch plate 42 is connected with the guide cylinder 41 through a rubber strip 43, the lower end of the guide tube 21 is equally spaced and provided with a clamping groove 44 corresponding to the stop rod 4, and the upper end face and the right end face of the stop rod 4 are connected to form an inclined face which facilitates the clamping groove 44 to squeeze and slide in. The inclined surface is provided so that the stopper rod 4 can slide out of the engagement groove 44 when slid rightward, and can be braked when slid leftward.
The handle mechanism comprises a left handle 13 which is hinged at the lower end of the guide ring 2, the right end of the push rod 24 is hinged with a right handle 14 through a downward connecting rod, the left handle 13 and the right handle 14 are crossed to form an X shape, and the left handle 13 and the right handle 14 are hinged at the crossing part. The lever principle is utilized, and the pinching is labor-saving. Here, the lower end of the left handle 13 is located on the right side, and the lower end of the right handle 14 is located on the left side.
Example 2
Referring to fig. 7 to 8, the present invention provides a technical solution of an distractor for measuring the magnitude of an distracting force: the utility model provides a strut convenient to measure and strut force size, left arm lock 1 and be on a parallel with left arm lock 1's right arm lock 11 of vertical setting, right arm lock 11's lower extreme is fixed with the cross-section and is square guide ring 2, and peg graft in the guide ring 2 and have transparent looks adaptation stand pipe 21, the left end of stand pipe 21 is fixed on left arm lock 1, and the front end upside of stand pipe 21 is provided with the tension scale mark 22 that shows the force size of strutting, the front end downside of stand pipe 21 is provided with the width scale mark 3 that shows the width size of strutting that corresponds with guide ring 2 left end face, and install the spring tension gauge mechanism that corresponds with tension scale mark 22 in the stand pipe 21, be connected with the handle mechanism that conveniently strut left arm lock 1 and right arm lock 11 between the lower extreme of guide ring 2 and the right-hand member of spring tension gauge mechanism. The arrangement of the guide ring 2 and the guide tube 21 enables the left clamping arm 1 and the right clamping arm 11 to open horizontally, thus being convenient for directly measuring and calculating the opening force, and the spring tension meter mechanism corresponds to the tension scale mark 22 by moving in the guide tube 21 without the help of the lever principle.
The upper ends of the left clamping arm 1 and the right clamping arm 11 are bent backwards in an arc mode so as to be convenient to insert between joints, clamping plates 12 for increasing the supporting area are fixed at the rear ends of the left clamping arm 1 and the right clamping arm 11, and the supporting area is increased.
The spring tension meter mechanism comprises a slider 23 which is arranged in a guide tube 21 and is square in cross section, the right end of the slider 23 is fixedly provided with a push rod 24 which penetrates out of the guide tube 21 right, the right end of the guide tube 21 is provided with a guide hole corresponding to the push rod 24, the right ends of the slider 23 and the guide tube 21 are provided with vent holes 25 which penetrate right, and the slider 23 is connected with the right end of an inner cavity of the guide tube 21 through a spring 26 sleeved on the push rod 24. When the contact joint is not distracted, the spring 26 is not stretched and the left end of the slider 23 is aligned with the zero tension graduation of the tension graduation mark 22. Here, the left-right movement is realized, and the support is not performed through the lever principle, so that the reading of the tension graduation mark 22 is the actual opening force, and the reading is more accurate. The right end of the guide ring 2 is provided with an upper guide plate 27 and a lower guide plate 27 which are sleeved on the guide tube 21. The guide tube 21 is guided left and right, and is not framed, so that the front side is mainly prevented from shielding the tension graduation marks 22, and the front and rear ends of the guide plate 27 are bent inwards to form front and rear positioning guide. A guiding sleeve 28 for guiding is fixed on the guiding hole and sleeved on the push rod 24. The guiding function makes the movement and the extension of the push rod 24 smoother. The combination of guide tube 21, slide 23, push rod 24 and spring 26 is similar to a spring tension meter, and the principle is the same. In addition, the starting value of the width graduation mark 3 may include the thicknesses of the left clip arm 1 and the right clip arm 11, which is more accurate.
The lower end of the lower guide sleeve 28 is inserted with a stop rod 4 with an upward square section, the stop rod 4 is sleeved with a guide cylinder 41 fixed on the lower guide sleeve 28, the lower end of the stop rod 4 is fixed with a right pinch plate 42, the pinch plate 42 is connected with the guide cylinder 41 through a rubber strip 43, the lower end of the guide tube 21 is equally spaced and provided with a clamping groove 44 corresponding to the stop rod 4, and the upper end face and the right end face of the stop rod 4 are connected to form an inclined face which facilitates the clamping groove 44 to squeeze and slide in. The inclined surface is provided so that the stopper rod 4 can slide out of the engagement groove 44 when slid rightward, and can be braked when slid leftward.
The handle mechanism comprises a left handle 13 which is hinged at the lower end of the guide ring 2, the right end of the push rod 24 is hinged with a right handle 14 through a downward connecting rod, the left handle 13 and the right handle 14 are crossed to form an X shape, and the left handle 13 and the right handle 14 are hinged at the crossing part. The lever principle is utilized, and the pinching is labor-saving. Here, the lower end of the left handle 13 is located on the right side, and the lower end of the right handle 14 is located on the left side.
The lower extreme of buckle 42 is connected with the stretching strap 5 of wearing out left handle 13 downwards, and stretching strap 5 alternates about the length direction of left handle 13, and the right-hand member of holding one side at left handle 13 is fixed to the end of stretching strap 5, and has seted up the jack that supplies stretching strap 5 to pass on the left handle 13, and the right-hand member of holding one side of left handle 13 is crooked left and is the recess 51 that conveniently pushes down stretching strap 5 left. When the clamping device is used, the pull belt 5 and the right handle 14 on the groove 51 are held, the pull belt 5 pulls the buckle plate 42, so that the stop rod 4 slides out of the clamping groove 44, the stop rod 4 is clamped into the clamping groove 44 when the clamping device is slowly released, the left clamping arm 1 and the right clamping arm 11 are limited to move, the fixing is realized, when the left clamping arm 1 and the right clamping arm 11 are required to be close, the clamping groove 44 is suddenly released or the releasing is quickened, the stop rod 4 is clamped into the clamping groove 44, because the distance from the stop rod 4 to the clamping groove 44 is small, can be 2mm, can be easily clamped into and can be preferentially clamped into, and therefore, the left moving distance of the guide ring 2 is small or can not move. The drawstring 5 moves along the jack, in addition, the drawstring 5 is made of a smooth soft material, but has no elasticity, can be made of smooth silk cloth, has a width, is not easy to wind and tie, is positioned at the part of the groove 51, cannot be tightened, and can be prevented from driving the drawstring 5 to stretch when the left handle 13 is overturned.
It should be noted that the present invention can also be used for other surgical distraction procedures, not limited to bone or joint distraction.
Working principle: the left clamp arm 1 and the right clamp arm 11 are connected through the guide ring 2 and the guide tube 21, so that left and right parallel movement is realized, the lever principle is separated, the stress is equivalent, no proportion exists, the guide tube 21 is internally provided with the sliding block 23, the guide tube 21, the sliding block 23, the push rod 24 and the spring 26 are combined to form a force measuring mechanism similar to a spring tension meter, the relative movement of the guide ring 2 and the guide tube 21 is realized through the left clamp arm 1 and the right clamp arm 11, before the opening starts, the spring 26 cannot be stretched, the sliding block 23 is aligned with the starting point of the tension scale line 22, along with the opening of the bone, the spring 26 is stretched, the spring balance is similar to the spring balance, the direct numerical value of the opening force is realized, the guide ring 2 corresponds to the numerical value of the width scale line 3, the numerical conversion is more visual, the position influence of the stress point when the left clamp arm 1 and the right clamp arm 11 are opened is avoided, the width scale line 3 and the guide tube 21 are not required to be opened, the opening of the guide tube 21 is realized, the parallel section is realized, and the opening of the guide tube 21 is realized. The left handle 13 and the right handle 14 are hinged to drive the guide ring 2 and the push rod 24 to move, the lever principle is utilized to reduce the force, and meanwhile, the parallel movement of the left clamping arm 1 and the right clamping arm 11 is not influenced. The setting of dead lever 4 and rubber strip 43 can realize automatic chucking, need not manual chucking, it is more convenient to pinch draw-in strap 5 and right handle 14 on recess 51, draw-in strap 5 pulling buckle 42, thereby make dead lever 4 roll out draw-in groove 44, in this way, dead lever 4 can block into draw-in groove 44 when slowly unclamping, restriction left arm 1 and right arm 11 remove, realize fixing, when needing to make left arm 1 and right arm 11 be close to, reduce and prop open distance and dynamics, loosen suddenly, perhaps accelerate to loosen, dead lever 4 then can block into draw-in groove 44, because dead lever 4 is very little to draw-in groove 44's distance, card easily goes into, can the priority card income, the distance that guide ring 2 moved very little or come not to move left like this, realize fixing, prop open dynamics size and width adjustment are very convenient like this, direct pinching can realize.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a strut convenient to measure and prop up opening force size, includes left arm lock (1) and right arm lock (11) that are on a parallel with left arm lock (1) of vertical setting, its characterized in that: the lower end of the right clamping arm (11) is fixedly provided with a guide ring (2) with a square section, a transparent guide tube (21) which is matched with the guide ring (2) is inserted in the guide ring, the left end of the guide tube (21) is fixed on the left clamping arm (1), the upper side of the front end of the guide tube (21) is provided with a tension scale mark (22) for displaying the magnitude of the expanding force, the lower side of the front end of the guide tube (21) is provided with a width scale mark (3) which corresponds to the left end face of the guide ring (2) and displays the expanding width, a spring tension meter mechanism which corresponds to the tension scale mark (22) is arranged in the guide tube (21), and a handle mechanism which is convenient for expanding the left clamping arm (1) and the right clamping arm (11) is connected between the lower end of the guide ring (2) and the right end of the spring tension meter mechanism;
the spring tension meter mechanism comprises a sliding block (23) which is arranged in a guide pipe (21) and is square in cross section, a push rod (24) which penetrates out of the guide pipe (21) rightward is fixed at the right end of the sliding block (23), a guide hole corresponding to the push rod (24) is formed in the right end of the guide pipe (21), ventilation holes (25) which penetrate rightward are formed in the right ends of the sliding block (23) and the guide pipe (21), and the sliding block (23) is connected with the right end of an inner cavity of the guide pipe (21) through a spring (26) sleeved on the push rod (24);
the lower end of the lower guide sleeve (28) is inserted with a stop rod (4) with an upward square section, the stop rod (4) is sleeved with a guide cylinder (41) fixed on the lower guide sleeve (28), the lower end of the stop rod (4) is fixedly provided with a right pinch plate (42), the pinch plate (42) is connected with the guide cylinder (41) through a rubber strip (43), the lower end of the guide tube (21) is provided with clamping grooves (44) corresponding to the stop rod (4) at equal intervals, and the connection between the upper end face and the right end face of the stop rod (4) is an inclined face which is convenient for the clamping grooves (44) to squeeze and slide in;
the handle mechanism comprises a left handle (13) which is hinged at the lower end of the guide ring (2), the right end of the push rod (24) is hinged with a right handle (14) through a downward connecting rod, the left handle (13) and the right handle (14) are crossed to form an X shape, and the left handle (13) and the right handle (14) are hinged at the crossing position;
the lower extreme of buckle (42) is connected with draw tape (5) of wearing out left handle (13) downwards, and draw tape (5) alternate about the length direction of left handle (13), the right-hand member of holding one side in left handle (13) is fixed to the end of draw tape (5), and has offered the jack that supplies draw tape (5) to pass on left handle (13), the right-hand member of holding one side in left handle (13) is crooked left and is recess (51) that conveniently pushes down draw tape (5) left.
2. A spreader for facilitating measurement of a spreading force according to claim 1 wherein: the upper ends of the left clamping arm (1) and the right clamping arm (11) are bent backwards in an arc mode, and clamping plates (12) for increasing the supporting area are fixed at the rear ends of the left clamping arm (1) and the right clamping arm (11).
3. A spreader for facilitating measurement of a spreading force according to claim 2 wherein: the right end of the guide ring (2) is provided with an upper guide plate (27) and a lower guide plate (27) which are sleeved on the guide pipe (21).
4. A spreader for facilitating measurement of a spreading force according to claim 3 wherein: a guiding sleeve (28) sleeved on the push rod (24) for guiding is fixed on the guiding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092823.6A CN114469205B (en) | 2022-01-26 | 2022-01-26 | Spreader convenient for measuring spreading force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092823.6A CN114469205B (en) | 2022-01-26 | 2022-01-26 | Spreader convenient for measuring spreading force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114469205A CN114469205A (en) | 2022-05-13 |
| CN114469205B true CN114469205B (en) | 2023-09-22 |
Family
ID=81475195
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