CN218781930U - Friction force testing device between lifting table legs - Google Patents
Friction force testing device between lifting table legs Download PDFInfo
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- CN218781930U CN218781930U CN202222970804.7U CN202222970804U CN218781930U CN 218781930 U CN218781930 U CN 218781930U CN 202222970804 U CN202222970804 U CN 202222970804U CN 218781930 U CN218781930 U CN 218781930U
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Abstract
The utility model discloses a friction force testing device between lifting table legs, which comprises a clamping component, a lifting component and a sensor, wherein the clamping component is configured to clamp a first pipe fitting, and the lifting component is configured to drive the clamping component and the first pipe fitting to lift so as to enable the first pipe fitting and a second pipe fitting to slide relatively; the sensor is arranged between the clamping assembly and the lifting assembly and used for bearing the clamping assembly, and the sensor is configured to acquire the friction force generated when the first pipe fitting and the second pipe fitting slide relatively; the centre gripping subassembly drives so that first pipe fitting can with the second pipe fitting relative slip that establishes mutually through lifting unit behind the first pipe fitting of centre gripping, because the sensor is bearing the centre gripping subassembly, also is bearing first pipe fitting just also, when first pipe fitting and second pipe fitting produced frictional force because of sliding, the sensor can acquire the change of bearing capacity to calculate and obtain frictional force.
Description
Technical Field
The utility model relates to a lift table field, in particular to frictional force testing arrangement between lift table leg.
Background
The upright posts or the table legs of the lifting table are generally sleeve pipes which are formed by sleeving an inner pipe and an outer pipe together, and the sleeve pipes stretch to realize the lifting of the lifting table; because the inner pipe and the outer pipe need to slide relatively when stretching, a sliding sheet is often arranged between the inner pipe and the outer pipe to reduce friction, the inner pipe and the outer pipe are not finished products, and the smoothness, the flatness and the like of the inner surface and the outer surface of the inner pipe and the outer pipe are poor, so that the sliding friction generated when the inner pipe and the outer pipe slide relatively is not equal everywhere; therefore, in the trade, often require the frictional force between inner tube and the outer tube within a certain interval, too big friction can reduce transmission efficiency and energy consumption, influences life even, and undersize friction then explains that there may be the clearance to exist between inner tube and the outer tube, and inner tube and outer tube can produce and rock, and unstable while also can strike the pipe wall and cause the noise, consequently also can carry out the frictional force test when the assembly sleeve pipe.
Therefore, a device is needed to effectively obtain the friction force generated when the inner pipe and the outer pipe slide relatively, and provide a basis for judging whether the friction force meets the requirement.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a frictional force testing arrangement between lift table leg, the device pass through centre gripping subassembly centre gripping pipe fitting, drive the motion of centre gripping subassembly by lift subassembly and make the mutual friction slip between the pipe fitting to frictional force when acquireing to slide by the sensor between lift subassembly and the centre gripping subassembly.
The technical scheme of the utility model is realized like this:
a friction force testing device between lifting table legs comprises:
a gripping assembly configured to grip a first tubular;
the lifting assembly is configured to drive the clamping assembly to lift and lower the first pipe fitting so as to enable the first pipe fitting and the second pipe fitting to slide relatively;
and the sensor is arranged between the clamping assembly and the lifting assembly and used for bearing the clamping assembly, and the sensor is configured to acquire the friction force generated when the first pipe fitting and the second pipe fitting slide relatively.
The centre gripping subassembly drives so that first pipe fitting can with the second pipe fitting relative slip that establishes mutually through lifting unit behind the first pipe fitting of centre gripping, because the sensor is bearing the centre gripping subassembly, also is bearing first pipe fitting just also, when first pipe fitting and second pipe fitting produced frictional force because of sliding, the sensor can acquire the change of bearing capacity to calculate and obtain frictional force.
Preferably, a plurality of guide rods are arranged around the sensor, and the guide rods are uniformly distributed around the sensor along the axial direction. Only connect centre gripping subassembly and lifting unit by the sensor, structural stability and job stabilization nature are all relatively poor, so can set up the guide arm and solve, the guide arm only is used for direction and stabilizing action, does not have the bearing effect to avoid disturbing the gained data of sensor.
Preferably, the guide rod is fixedly connected with one of the clamping assembly or the lifting assembly, and the guide rod is arranged in a sliding manner with the other of the clamping assembly or the lifting assembly. Although the guide rod is in contact with the clamping assembly and the lifting assembly, one end of the guide rod is not fixed and is arranged in a sliding mode, so that the guide rod is prevented from bearing the clamping assembly and the first pipe fitting, and the sensor can obtain inaccurate data.
Preferably, each guide rod is arranged in a linear bearing, and the linear bearing is arranged on a clamping assembly or a lifting assembly which is arranged in a sliding manner with the guide rod. The free state of one end of the guide rod is fixed through the linear bearing, so that the guide rail only realizes the guiding and stabilizing functions.
Preferably, the sensor is a pull pressure sensor.
Preferably, the lifting assembly comprises a lifting driving piece and a connecting structure, the connecting structure is arranged above the sensor, and the clamping assembly is located below the sensor.
Preferably, the lifting driving part is a screw rod and nut assembly driven by a motor, the connecting structure comprises a first connecting plate and a top plate, the first connecting plate is vertically arranged, the top plate is horizontally arranged, the first connecting plate is connected with the lifting driving part, the top plate is fixedly connected with the first connecting plate, and the sensor is arranged below the top plate.
Preferably, a plurality of long-strip-shaped reinforcing plates are arranged between the first connecting plate and the top plate, and the reinforcing plates are vertically arranged and fixed with the connecting plate and the top plate respectively. The first connecting plate is vertically arranged, the top plate is horizontally arranged, the connection stability between the first connecting plate and the top plate is poor, the top plate is not easy to keep horizontal, and particularly the top plate needs to support the first clamping assembly and the outer pipe; therefore, the reinforcing plate is arranged between the first connecting plate and the top plate, and the reinforcing plate reinforces the stability between the first connecting plate and the top plate so that the top plate can be kept horizontal.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
after the clamping assembly clamps the first pipe fitting, the first pipe fitting can slide relative to the second pipe fitting which is sleeved with the first pipe fitting through the driving of the lifting assembly, the first pipe fitting is also carried as the clamping assembly is carried by the sensor, and when the first pipe fitting and the second pipe fitting generate friction force due to sliding, the sensor can acquire the change of the bearing force so as to calculate the friction force; only connect centre gripping subassembly and lifting unit by the sensor, structural stability and job stabilization nature are all relatively poor, so can set up the guide arm and solve, the guide arm only is used for direction and stabilizing action, does not have the bearing effect to avoid disturbing the gained data of sensor.
Drawings
Fig. 1 is a schematic perspective view of the apparatus according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the apparatus according to the embodiment of the present invention;
fig. 3 is a schematic perspective view of an embodiment of the present invention, in which a first clamping mechanism and a positioning and locking mechanism are mounted on a vertical plate, and a second clamping mechanism is mounted on a bottom plate;
fig. 4 is a schematic perspective view illustrating a first lifting mechanism and a second lifting mechanism mounted on a vertical plate according to an embodiment of the present invention;
fig. 5 is a schematic perspective view illustrating a connection between the first clamping mechanism and the first lifting mechanism according to an embodiment of the present invention;
fig. 6 is a first schematic perspective view of the first clamping mechanism according to the embodiment of the present invention;
fig. 7 is a side view of a first clamping mechanism in an embodiment of the invention;
fig. 8 is a schematic perspective view illustrating a second clamping mechanism according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of a second clamping mechanism according to an embodiment of the present invention;
fig. 10 is a schematic perspective view illustrating the connection between the positioning and locking mechanism and the second lifting mechanism according to the embodiment of the present invention;
fig. 11 is a schematic perspective view of a positioning and locking mechanism according to an embodiment of the present invention.
The figures are numbered: a vertical frame 1; a supporting box 101; a riser 102; a bottom plate 103; a first clamping mechanism 2; an upper seat plate 201; a first connection plate 202; a top plate 203; a first clamp block 204; a first lifting mechanism 3; a second clamping mechanism 4; a lower seat plate 401; a second clamp block 402; a base 403; a receiving groove 404; a positioning and locking mechanism 5; a second connecting plate 501; an annular seat plate 502; a third clamping block 503; a window 504; an opening 505; a push-pull cylinder 506; a second lifting mechanism 6; an outer tube 7; an inner tube 8; a bushing 10; a sensor 11; a connection seat 111; a guide rod 112; a linear bearing 113; a guide rail 12; a slider 13; a first vertical groove 14; a second vertical groove 15; a connecting rod 16; a reinforcing plate 17; an adjustable air cylinder 18; a cylinder block 181; a cylinder 182; a piston rod 183; a kidney-shaped hole 19; a control panel 20; a display panel 21.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The specific implementation manner of the utility model is as follows:
as shown in fig. 1, 2, 5, and 6, the present invention provides a friction force testing device between lifting table legs, which includes a clamping assembly, a lifting assembly and a sensor 11, wherein the clamping assembly is configured to clamp a first pipe (also an outer pipe 7 in this embodiment), and the lifting assembly is configured to drive the clamping assembly and the first pipe to lift, so that the first pipe and a second pipe (also an inner pipe 8 in this embodiment) slide relatively; sensor 11 is set up between clamping assembly and the lifting unit and is carried clamping assembly by sensor 11, and sensor 11 is configured as acquireing the frictional force that produces when first tubular member and second tubular member relative slip.
This frictional force testing arrangement between lift table leg is applied to the rigging equipment of lift stand, specifically speaking:
the rigging equipment of lift stand includes:
a vertical frame 1 configured as a main body support of the apparatus;
the first clamping mechanism 2 is arranged at the upper part of the vertical frame 1 and is driven to lift by a first lifting mechanism 3; the first clamping mechanism 2 is configured to clamp the outer tube 7 and drive the outer tube 7 to lift;
the first lifting mechanism 3 is arranged on the vertical rack 1 and connected with the first clamping mechanism 2;
a second clamping mechanism 4 arranged at the lower part of the vertical frame 1 and configured to clamp the inner pipe 8;
the positioning and locking mechanism 5 is arranged on the vertical rack 1 and is positioned between the first clamping mechanism 2 and the second clamping mechanism 4; the positioning and locking mechanism 5 is driven by a second lifting mechanism 6 to lift, and the positioning and locking mechanism 5 is configured to clamp a sliding sheet (not shown) on the inner tube 8 and prevent the sliding sheet from falling off from the inner tube 8;
the second lifting mechanism 6 is arranged on the vertical rack 1 and connected with the positioning locking mechanism 5;
the first clamping mechanism 2 descends to enable the outer pipe 7 to be sleeved on the inner pipe 8, and then the first clamping mechanism is lifted to drive the outer pipe 7 and the inner pipe 8 to slide relatively;
and the sensor 11 is arranged on the first clamping mechanism 2 and is configured to acquire the friction force when the inner pipe 8 and the outer pipe 7 slide and transmit the friction force to the display screen for display.
The clamping component is the first clamping mechanism 2, and the lifting component is the first lifting mechanism 3.
Specifically, as shown in fig. 1, 3 and 4, the vertical frame 1 includes a vertical cabinet type supporting box 101, a vertical plate 102 and a bottom plate 103, the supporting box 101 is an external integral frame and is used as a main body support of the whole equipment, the supporting box 101 is opened forward, the vertical plate 102 and the bottom plate 103 are also arranged inside the supporting box 101, and the working components are both arranged on the vertical plate 102 and the bottom plate 103.
The bottom plate 103 is horizontally arranged, and the vertical plate 102 is vertically arranged on the bottom plate 103; the first clamping mechanism 2, the first lifting mechanism 3, the positioning and locking mechanism 5 and the second lifting mechanism 6 are all arranged on the vertical plate 102, and the second clamping mechanism 4 is arranged on the bottom plate 103; the first clamping mechanism 2 and the positioning and locking mechanism 5 are arranged on the front surface of the vertical plate 102, the first lifting mechanism 3 and the second lifting mechanism 6 are arranged on the back surface of the vertical plate 102, and the second lifting mechanism 6 is positioned beside the first lifting mechanism 3; two guide rails 12 which are arranged vertically and are spaced left and right and parallel to each other are further arranged on the front surface of the vertical plate 102, the sections of the guide rails 12 are approximately in an I shape, and the first clamping mechanism 2 and the positioning and locking mechanism 5 are both arranged on the two guide rails 12 in a sliding manner; the first clamping mechanism 2 and the positioning locking mechanism 5 are both provided with a slide block 13 which is in sliding fit with the guide rail 12; the first clamping mechanism 2 and the slide block 13 thereof are located at the upper end part of the guide rail 12 in the initial state of operation, and the positioning and locking mechanism 5 and the slide block 13 thereof are located at the middle lower part of the guide rail 12.
As shown in fig. 4, 5, and 10, the first lifting mechanism 3 is connected to the first clamping mechanism 2 through a first vertical slot 14 formed on the vertical plate 102, the second lifting mechanism 6 is connected to the positioning and locking mechanism 5 through a second vertical slot 15 formed on the vertical plate 102, and similarly, the second vertical slot 15 is located beside the first vertical slot 14, and the two are arranged one by one, specifically, the first lifting mechanism 3 is located on the left side of the second lifting mechanism 6, and the first vertical slot 14 is also located on the left side of the second vertical slot 15.
The first lifting mechanism 3 and the second lifting mechanism 6 are both screw rod and nut mechanisms driven by a motor, the stroke of the first lifting mechanism 3 is greater than that of the second lifting mechanism 6, and similarly, the length of the first vertical groove 14 in the vertical direction is greater than that of the second vertical groove 15 in the vertical direction; the nuts of the first lifting mechanism 3 and the second lifting mechanism 6 are respectively provided with a connecting rod 16, the connecting rod 16 on the first lifting mechanism 3 passes through the first vertical groove 14 to be connected with the first clamping mechanism 2, and the connecting rod 16 on the second lifting mechanism 6 passes through the second vertical groove 15 to be connected with the positioning and locking mechanism 5; the nut and the rear end of the connecting rod 16 are fixedly connected together through a screw, and the first clamping mechanism 2, the positioning and locking mechanism 5 and the front end of the two connecting rods 16 are fixedly connected together through a screw.
The stroke of the first lifting mechanism 3 is greater than that of the second lifting mechanism 6 because the first lifting mechanism 3 needs to drive the first clamping mechanism 2 and the outer pipe 7 to perform friction force test on the inner pipe 8, and the friction force test needs to test and record data of each position of the pipe fitting as comprehensively as possible, so that the stroke of the first lifting mechanism 3 is greater, and the second lifting mechanism 6 drives the positioning and locking mechanism 5 to lift, and mainly fixes the sliding sheet when the outer pipe 7 is sleeved on the inner pipe 8, so that the sliding sheet can smoothly enter the outer pipe 7.
As shown in fig. 5-8, the first clamping mechanism 2 includes an upper seat plate 201, a first connecting plate 202, a top plate 203 and a first clamping assembly, the first connecting plate 202 is vertically disposed and fixedly connected to the connecting rod 16 and the sliding block 13, the connecting rod 16 and the sliding block 13 are disposed on the back of the first connecting plate 202, the top plate 203 is connected to the first connecting plate 202 and located in front of the first connecting plate 202, and the first clamping assembly is mounted below the upper seat plate 201; the sensor 11 is located between the top plate 203 and the upper seat plate 201, specifically, the sensor 11 is connected to the first clamping mechanism 2 through a set of connecting assembly, the connecting assembly includes a connecting seat 111 and four guide rods 112 vertically arranged on the connecting seat 111, the guide rods 112 are uniformly distributed around the sensor 11, and the lower ends of the guide rods 112 are inserted on the connecting seat 111 and fixedly connected with the connecting seat 111; the top plate 203 is connected with the upper seat plate 201 through a connecting assembly, the connecting seat 111 is connected with the upper surface of the upper seat plate 201, the upper end part of the guide rod 112 is inserted into the top plate 203, four linear bearings 113 are correspondingly arranged on the top plate 203, and the guide rod 112 is inserted into the linear bearings 113; the sensor 11 is installed between the top plate 203 and the coupling seat 111.
The sensor 11 is an S-shaped pulling pressure sensor 11, the upper end of the sensor 11 is fixedly connected with the top plate 203, and the lower end of the sensor 11 is fixedly connected with the connecting seat 111; and the guide rod 112 is not stressed, only the sensor 11 is stressed, so that the sensor 11 can completely obtain the friction force generated when the outer pipe 7 ascends and descends on the inner pipe 8 when the friction force test is carried out.
Furthermore, a plurality of strip-shaped reinforcing plates 17 are arranged between the first connecting plate 202 and the top plate 203, and the reinforcing plates 17 are vertically arranged and fixed with the connecting plate and the top plate 203 respectively; the first connecting plate 202 is vertically arranged, the top plate 203 is horizontally arranged, the connection stability between the first connecting plate and the top plate 203 is poor, the top plate 203 is not easy to keep horizontal, and particularly the top plate 203 needs to support the first clamping assembly and the outer tube 7; therefore, the reinforcing plate 17 is provided between the first connecting plate 202 and the top plate 203, and the reinforcing plate 17 reinforces the stability between the first connecting plate 202 and the top plate 203 so that the top plate 203 can be kept horizontal.
The first clamping assembly comprises a first clamping block 204 and an adjustable air cylinder 18, the adjustable air cylinder 18 is mounted on the upper seat plate 201 through an air cylinder seat 181, the air cylinder seat 181 protrudes downwards out of the upper seat plate 201, and the first clamping block 204 is arranged on the adjustable air cylinder 18 and is driven by the adjustable air cylinder 18 to move; the first clamping block 204 and the adjustable cylinder 18 are arranged along the left-right direction, and the adjustable cylinder 18 is configured to be capable of adjusting the position of the first clamping block 204 along the left-right direction; specifically, the adjustable cylinder 18 includes a cylinder body 182 and a piston rod 183 adjustable in length in the left-right direction, both left and right ends of the piston rod 183 protrude from the cylinder body 182, and the position of the first clamping block 204 in the left-right direction is adjusted by adjusting the length of both left and right ends of the piston rod 183, so as to laterally adjust the outer tube 7 clamped by the first clamping block 204.
The number of the first clamping blocks 204 is two, correspondingly, the number of the adjustable cylinders 18 is two, and the two adjustable cylinders 18 can control the two first clamping blocks 204 to clamp the upper end of the outer pipe 7 left by right; the first clamping block 204 comprises a head part and a tail part, the tail part is connected with the piston rod 183, the head part is provided with a notch facing the outer pipe 7, the shape of the notch is matched with the shape of the outer pipe 7, namely the clamping block can be replaced, when the pipe fitting is a square pipe, the clamping block with the square notch can be replaced, and when the pipe fitting is a circular pipe, the clamping block with the circular notch can be replaced.
The upper seat plate 201 is provided with a waist-shaped hole 19, the upper seat plate 201 passes through the waist-shaped hole 19 through a screw to be connected with the connecting seat 111, the second clamping component is configured to be capable of adjusting the position along the front-back direction, the waist-shaped hole 19 can be used for adjusting the position of the inner tube 8 in the front-back direction, and the adjustable air cylinder 18 can adjust the position of the inner tube 8 in the left-right direction, so that the inner tube 8 and the outer tube 7 can be kept coaxial after adjustment even if the inner tube 8 and the outer tube 7 are not coaxial in the initial state.
As shown in fig. 9, the second clamping mechanism 4 includes a lower seat plate 401 and a second clamping assembly, the lower seat plate 401 is horizontally installed on the bottom plate 103, and the second clamping assembly is installed on the upper surface of the lower seat plate 401; the lower seat plate 401 is also provided with a waist-shaped hole 19, the lower seat plate 401 is connected with the bottom plate 103 through a bolt arranged in the waist-shaped hole 19, and the position of the second clamping assembly can be adjusted along the front-back direction; similarly, the second clamping assembly comprises a second clamping block 402 and an adjustable air cylinder 18, wherein the second clamping block 402 is arranged on the adjustable air cylinder 18 and is driven by the adjustable air cylinder 18 to move; the second clamping block 402 and the adjustable cylinder 18 are arranged along the left-right direction, and the adjustable cylinder 18 is configured to be capable of adjusting the position of the second clamping block 402 along the left-right direction; the features of the second clamping block 402 are the same as the first clamping block 204, and are not described herein.
The lower base plate 401 is further provided with a base 403, and the middle of the base 403 is provided with a containing groove 404 matching the shape of the pipe, and the base 403 can be replaced under the condition of pipe with different shapes.
As shown in fig. 10 and 11, the positioning and locking mechanism 5 includes a second connecting plate 501, an annular seat plate 502, and a third clamping assembly, the annular seat plate 502 is horizontally disposed on the second connecting plate 501, the back surface of the second connecting plate 501 is connected to the slider 13 and the connecting rod 16 of the second lifting mechanism 6, and the third clamping assembly is mounted on the lower surface of the second connecting plate 501; a circular window 504 capable of avoiding the inner pipe 8 is formed in the annular seat plate 502, and a V-shaped opening 505 is formed in the annular seat plate 502 in front of the window 504; a reinforcing plate 17 is also provided between the second connecting plate 501 and the annular seat plate 502.
The third clamping assembly comprises a third clamping head and push-pull air cylinders 506, the number of the third clamping head and the push-pull air cylinders 506 is four, the four third clamping heads are arranged around the pipe fitting at intervals of 90 degrees, the third clamping head also has a tail part and a head part, and the head part of the third clamping head also has a notch matched with the shape of the pipe fitting.
The first clamping block 204, the second clamping block 402 and the third clamping block 503 all have an unlocking state and a locking state; in a locked state, the clamping blocks clamp the pipe, the first clamping block 204, the second clamping block 402 and the third clamping block 503 are all located on the same vertical axis, and the first clamping block 204, the second clamping block 402 and the third clamping block 503 are made of acrylic rubber.
The supporting box 101 is further provided with a control panel 20 and a display panel 21 with a display screen, the control panel 20 is provided with buttons for controlling the equipment to work, and the display panel 21 can display that the friction force obtained by the sensor 11 is vertical.
The working process of the equipment is as follows:
the inner tube 8 provided with the sliding piece and the lining 10 is placed on a base 403, the adjustable cylinder 18 of the second clamping mechanism 4 pushes the second clamping block 402 to clamp the lower end part of the inner tube 8, the push-pull cylinder 506 of the positioning and locking mechanism 5 pushes the third clamping block 503 to clamp the upper end part of the inner tube 8, namely the position of the sliding piece, and the sliding piece is pressed on the inner tube 8 by the third chuck to prevent the sliding piece from falling off the inner tube 8 during tube loading; at this time, the upper end of the outer tube 7 is placed between the two first clamping blocks 204, so that the adjustable cylinder 18 of the first clamping mechanism 2 pushes the first clamping blocks 204 to clamp the upper end of the outer tube 7; then, the first lifting mechanism 3 drives the first clamping mechanism 2 and the outer pipe 7 to move downwards, after the outer pipe 7 moves downwards to the position where the sliding sheet is located, the push-pull air cylinder 506 drives the third clamping block 503 to be away from the inner pipe 8, at the moment, the outer pipe 7 can continuously move downwards, a worker holds the lining 10, the lining 10 is clamped into the pipe orifice of the outer pipe 7, and at the moment, the pipe installing work is completed.
After the pipe loading work is finished, the outer pipe 7 is lifted after continuously descending, and the complete lifting stroke of the lifting table during working is simulated for one time, so that the sliding sheet, the lining 10 and the pipe fitting are in running-in; at this time, the outer tube 7 can be shaken by the staff to confirm whether a large gap exists between the inner tube 8 and the outer tube 7; if the outer pipe is qualified, performing a friction force test, driving the outer pipe 7 to slide downwards on the inner pipe 8 by the first lifting mechanism 3, and displaying the friction force of each position of the pipe wall on the display panel 21 in a curve form when the outer pipe 7 slides downwards by the sensor 11; when the outer pipe 7 is driven by the first lifting mechanism 3 to slide upwards on the inner pipe 8, and the sensor 11 finds that the outer pipe 7 slides upwards, the friction force of each position of the pipe wall is displayed on the display panel 21 in a curve form; finally, the qualification of the friction force test is carried out, namely whether the friction force curve obtained on the display panel 21 is in a qualified range or not is judged, namely whether the friction force of each point of the pipe wall exceeds the qualified range or not is judged during working, and if the friction force curve is in the qualified range, the pipe loading is finished and the friction force test is passed; the first clamp block 204 and the second clamp block 402 release the tubular and the operator removes the installed casing.
Some inner tubes 8 are provided with an upper group of sliding sheets and a lower group of sliding sheets, after the sliding sheets are arranged for the first time, the second lifting mechanism 6 drives the positioning locking mechanism 5 to move downwards to the position of the second group of sliding sheets, the second group of sliding sheets are tightly pushed on the inner tubes 8, the first lifting mechanism 3 drives the first clamping mechanism 2 to descend to the position of the second group of sliding sheets, and after the third clamping block 503 is removed, the first clamping mechanism 2 continues to descend for subsequent work.
The working process omits the action of pressing the button.
Claims (8)
1. The utility model provides a frictional force testing arrangement between lift table leg which characterized in that includes:
a gripping assembly configured to grip a first tubular;
the lifting assembly is configured to drive the clamping assembly to lift and lower the first pipe fitting so as to enable the first pipe fitting and the second pipe fitting to slide relatively;
and the sensor is arranged between the clamping component and the lifting component and is used for bearing the clamping component, and the sensor is configured to acquire the friction force generated when the first pipe fitting and the second pipe fitting slide relatively.
2. A device for testing friction between table legs as claimed in claim 1, wherein: and a plurality of guide rods are also arranged around the sensor and are uniformly distributed around the sensor along the axial direction.
3. A device for testing friction between table legs as claimed in claim 2, wherein: the guide rod is fixedly connected with one of the clamping assembly or the lifting assembly, and the guide rod is arranged with the other of the clamping assembly or the lifting assembly in a sliding manner.
4. A device for testing friction between table legs as claimed in claim 3, wherein: each guide rod is arranged in a linear bearing, and the linear bearing is arranged on a clamping assembly or a lifting assembly which is arranged in a sliding manner with the guide rod.
5. A device for testing friction between table legs as claimed in claim 1, wherein: the sensor is a pull pressure sensor.
6. A device for testing friction between two lifting legs as claimed in claim 1, wherein: the lifting assembly comprises a lifting driving piece and a connecting structure, the connecting structure is arranged above the sensor, and the clamping assembly is located below the sensor.
7. A device for testing friction between table legs as claimed in claim 6, wherein: the lifting driving piece is a screw rod and nut assembly driven by a motor, the connecting structure comprises a first connecting plate and a top plate, the first connecting plate is vertically arranged, the top plate is horizontally arranged, the first connecting plate is connected with the lifting driving piece, the top plate is fixedly connected with the first connecting plate, and the sensor is arranged below the top plate.
8. A device for testing friction between table legs as claimed in claim 7, wherein: a plurality of strip-shaped reinforcing plates are arranged between the first connecting plate and the top plate, and the reinforcing plates are vertically arranged and are respectively fixed with the connecting plate and the top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222970804.7U CN218781930U (en) | 2022-11-03 | 2022-11-03 | Friction force testing device between lifting table legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222970804.7U CN218781930U (en) | 2022-11-03 | 2022-11-03 | Friction force testing device between lifting table legs |
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| Publication Number | Publication Date |
|---|---|
| CN218781930U true CN218781930U (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222970804.7U Active CN218781930U (en) | 2022-11-03 | 2022-11-03 | Friction force testing device between lifting table legs |
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| CN (1) | CN218781930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115625503A (en) * | 2022-11-03 | 2023-01-20 | 永艺家具股份有限公司 | Assembly equipment for a lifting column |
| CN116105911A (en) * | 2023-04-12 | 2023-05-12 | 苏州英维特精密机械有限公司 | Testing and adjusting device for sliding friction force of telescopic protection tube |
-
2022
- 2022-11-03 CN CN202222970804.7U patent/CN218781930U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115625503A (en) * | 2022-11-03 | 2023-01-20 | 永艺家具股份有限公司 | Assembly equipment for a lifting column |
| CN116105911A (en) * | 2023-04-12 | 2023-05-12 | 苏州英维特精密机械有限公司 | Testing and adjusting device for sliding friction force of telescopic protection tube |
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