CN215949407U - Road coring clamp holder - Google Patents

Abstract

The utility model discloses a road coring gripper, which comprises a lifting main shaft, an upper supporting arm ring, a lower supporting arm ring, two link mechanisms and claw pieces, wherein the claw pieces are provided with a plurality of groups, the upper ends of all the claw pieces are arranged around the lower end of the lifting main shaft, each claw piece is correspondingly provided with one two link mechanism, the upper end of each claw piece is hinged with the lower supporting arm ring, the lower ends of the two link mechanisms are fixed with the claw pieces, the upper ends of the two link mechanisms are hinged with the upper supporting arm ring, and in the downward movement process of the lower supporting arm ring, the lower ends of the claw pieces rotate relative to the upper ends in the direction close to the axis of the lifting main shaft. According to the utility model, the position of the nut is adjusted by adjusting the return spring, so that the opening angle of the claw flap keeps the same size as that of the annular drilling hole, the accurate positioning of the whole clamping device into the hole is facilitated, and the self-locking during the lifting of the core machine can be realized. Therefore, the core sample is not easy to segment or break, and the sampling is complete.

Description

Road coring clamp holder

Technical Field

The utility model belongs to the technical field of road core taking clamps, and particularly relates to a core sample holder of a road core taking machine.

Background

The widely used core machine of getting in the road engineering field at present is because of having the function singleness, and operating time is long, and working cost is high, work efficiency low scheduling problem, and especially these problems are more outstanding when carrying out long distance multiple spot position and get core work. Therefore, the intelligent and automatic road core taking machine has a great development prospect in the future, the common core taking clamping mechanism is manually operated, the automation cannot be realized depending on the experience and the hand feeling of an operator, and meanwhile, a core sample cannot be completely taken out by the clamping structure, so that the core sample is segmented or broken, and the difficulty of subsequent disease identification and core hole backfilling is greatly increased. Meanwhile, the commonly used two-flap type clamp is often incapable of being used normally due to the fact that the clamping piece is deformed due to uneven stress.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: provides a road coring gripper capable of completely taking out a core sample.

In order to solve the technical problem, the utility model comprises a lifting main shaft, an upper supporting arm ring, a lower supporting arm ring, two link mechanisms and claw pieces, wherein the upper supporting arm ring is fixed on the lifting main shaft, the lower supporting arm ring is sleeved on the lifting main shaft in a sliding manner, the lifting main shaft is provided with a driving mechanism for driving the lower supporting arm ring to move downwards, the lifting main shaft is sleeved with a return spring, the lower end of the lifting main shaft is in threaded connection with a return spring adjusting nut, the lower supporting arm ring, the return spring and the return spring adjusting nut are sequentially contacted, the claw pieces are provided with a plurality of groups, the upper ends of all the claw pieces are arranged around the lower end of the lifting main shaft, each claw piece is correspondingly provided with one two link mechanism, the upper end of each claw piece is hinged and connected with the lower supporting arm ring, the lower ends of the two link mechanisms are fixed with the claw pieces, the upper ends of the two link mechanisms are hinged and connected with the upper supporting arm ring, and the lower supporting arm ring moves downwards, the lower end of the claw piece rotates relative to the upper end in the direction close to the axis of the lifting main shaft.

Preferably, the radius of the distribution circle of the hinge holes for hinging the claw pieces on the lower support arm ring is larger than that of the hinge holes for hinging the two link mechanisms on the upper support arm ring.

Preferably, the driving mechanism is an electromagnetic linear actuator, a linear motion part of the electromagnetic linear actuator moves up and down in the axis direction of the lifting spindle and is arranged on the lifting spindle, a limiter of the electromagnetic linear actuator is used for limiting the upper limit of the linear motion part of the electromagnetic linear actuator, and the linear motion part of the electromagnetic linear actuator is pressed on the upper side of the lower support arm ring.

Preferably, the claw lobes are cylindrical panel bodies less than 180 degrees.

Preferably, the claw petals are three groups, the claw petals are cylindrical plate bodies with the angles of 100 degrees and 120 degrees, and when the lower supporting arm ring is positioned at the upper limit position, all the claw petals are coaxially arranged with the lifting spindle. Three lamella formula structures compare in traditional two lamella formulas have easily the location, and fix a position accurate advantage, more are fit for being applied to automation equipment, and the claw lamella is also more even to the power of holding tightly of core appearance simultaneously.

Preferably, 45-degree crossed oblique anti-slip lines are arranged on the inner sides of the claw pieces, and the inner cylindrical surfaces of the claw pieces have a negative draft angle of 1 degree relative to the outer cylindrical surfaces. The lower part of the core sample can be subjected to larger holding force, so that the core sample can be taken out more completely.

Preferably, two link mechanism are tip looks articulated connecting rod and claw lamella linking arm, and the connecting rod is the straight-bar, and claw lamella linking arm is the arc pole, and the lower extreme and the melon lamella of claw lamella linking arm are fixed, and the upper end and the articulated connection of last support arm ring of connecting rod.

The utility model has the beneficial effects that: before coring, the nut position is adjusted by adjusting the reset spring, so that the jaw opening angle keeps the same size as that of the annular drilling hole, the annular drilling hole is convenient to enter, the adjusting difficulty of the jaw opening degree can be greatly simplified by adjusting the nut and the reset spring, and the jaw is always in the optimal opening degree in the state of not being tightly held, so that the accurate positioning of the whole clamping device into the hole is facilitated. After the core machine is put in place, the lower end of the claw clack can be controlled to be opened and closed through the driving mechanism, so that the lower end of the claw clack is inwards folded, the core sample is tightly held, the dead weight of the structure and the core sample is fully utilized, in the upward lifting process, the lifting force is converted into the holding force of the claw clack through the lever formed by the two connecting rod mechanisms and the lower supporting arm, and the self-locking during the lifting of the core machine can be realized by matching the working thrust of the driving mechanism. Therefore, the core sample is not easy to segment or break, and the sampling is complete.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the A-A full section of FIG. 2;

in the figure: the device comprises a lifting main shaft 1, an upper supporting arm ring 2, an electromagnetic linear actuator limiter 3, an electromagnetic linear actuator 4, a return spring 5, a claw 6, a return spring adjusting nut 7, a lower supporting arm ring 8, a claw 9 connecting arm, a connecting rod 10 and a hinge pin 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A road coring gripper as shown in fig. 1-3, comprising a lifting spindle 1, an upper support arm ring 2, an electromagnetic linear actuator limiter 3, an electromagnetic linear actuator 4, a return spring 5, a claw piece 6, a return spring adjusting nut 7, a lower support arm ring 8, a claw piece connecting arm 9, a connecting rod 10 and a hinge pin 11.

The upper supporting arm ring 2, the electromagnetic linear actuator limiter 3, the electromagnetic linear actuator 4, the lower supporting arm ring 8, the reset spring 5 and the reset spring adjusting nut 7 are sequentially arranged on the lifting main shaft 1 from bottom to bottom.

Go up support arm ring 2 and electromagnetism linear actuator stopper 3 and fix on lift main shaft 1, lower support arm ring 8 slides and cup joints on lift main shaft 1, the up-and-down motion is gone up and down in the axis direction of lift main shaft 1 in the rectilinear motion portion of electromagnetism linear actuator 4, electromagnetism linear actuator stopper 3 is used for the last spacing of the rectilinear motion portion of electromagnetism linear actuator 4, the rectilinear motion portion downstream of electromagnetism linear actuator 4 can promote 8 downstream of lower support arm ring, reset spring adjusting nut 7 and the 1 lower extreme threaded connection of lift main shaft, can adjust reset spring 5's pretightning force. The electromagnetic linear actuator 4 adopts the prior art, the electromagnetic linear actuator 4 and the lifting spindle 1 adopt the existing installation mode, and only the linear motion part of the electromagnetic linear actuator 4 can move up and down in the axis direction of the lifting spindle 1.

The number of the claw petals 6 is three, the claw petals 6 are cylindrical panel bodies, the upper ends of all the claw petals 6 are arranged around the lower end of the lifting spindle 1, and in the process that the electromagnetic linear actuator 4 pushes the lower support arm ring 8 to move downwards, the lower end of each claw petal 6 rotates relative to the upper end in the direction close to the axis of the lifting spindle 1. The upper end of each claw 6 is hinged to the lower support arm ring 8, the claw connecting arms 9 are hinged to the ends of the connecting rods 10 to form a two-link mechanism, each claw 6 corresponds to one two-link mechanism, the lower end of each claw connecting arm 9 is fixed to the corresponding claw 6, the upper end of each connecting rod 10 is hinged to the upper support arm ring 2 through a hinge pin 11, and in the downward movement process of the lower support arm ring 8, the lower end of each claw 6 rotates relative to the upper end in the direction close to the axis of the lifting spindle 1. The radius of the distribution circle of the hinge holes for hinging the claw parts 6 on the lower supporting arm ring 8 is larger than that of the hinge holes for hinging the connecting rod 10 on the upper supporting arm ring 2. 45-degree crossed oblique anti-slip lines are arranged on the inner side of each claw piece 6, and a negative draft angle of 1 degree is formed between the inner cylindrical surface and the outer cylindrical surface of each claw piece 6.

The road core taking clamp holder is arranged on an automatic rotary rack of a working platform of an automatic road core taking machine. The road coring clamper is arranged on one of four side surfaces of the rotating platform frame. When the road coring clamp is in work, the rotary table frame drives the road coring clamp to accurately position the drilled hole position and downwards grab a core sample. A ring drill was used to drill the annular borehole prior to sampling.

The core drilling machine transfers the clamping device down to the opening of the annular drill hole, and under the combined action of the return spring and the electromagnetic linear actuator limiting stopper, the opening angle of the claw piece keeps the same size as that of the annular drill hole, so that the clamping device can be accurately inserted into the hole; after the clamp holder reaches a set depth, the control electromagnetic linear actuator pushes the lower support arm ring to move downwards, and initial holding force is applied to the claw piece through a series of lever actions of the connecting rod, the claw piece connecting arm and the upper support arm ring, so that the lower end of the claw piece is folded inwards to hold the core sample.

Under the action of initial holding force, the core-taking machine applies repeated clockwise/anticlockwise shimmy to the whole clamp holder to cut off the connection between the core sample and the road foundation.

After the core sample is cut off, the electromagnetic linear actuator further applies holding force, the core taking machine controls the clamping device to ascend, the claw flaps generate downward resistance under the action of friction force with the core sample, the holding force is further enhanced through the lever system by the resistance, the larger the resistance is, the larger the generated additional holding force is, and therefore the whole device and the core sample are enabled to generate self-locking, and the core sample and the clamping device are enabled to be separated from the sampling hole together.

After the core sample leaves the thief hole, the sample tray stretches into the holder below, electromagnetism linear actuator return upwards, and reset spring promotes the lower support arm ring and shifts up, makes the great angle of three lamella claws fully open, and the core sample is deviate from and fall on the tray, and whole coring work is accomplished.

It should be noted that all the directional indications (such as up, down, left, right, front and rear … …) in the present invention are only used for explaining the relative positional relationship between the components, the motion situation, etc. in a certain posture (as shown in the drawings), and the directional indication is only for convenience of description, and if the posture is changed, the directional indication is also changed accordingly, so that the present invention is not to be construed as being limited.

Claims (7)

1. The utility model provides a road core holder which characterized in that: comprises a lifting main shaft, an upper supporting arm ring and a lower supporting arm ring, the upper support arm ring is fixed on the lifting spindle, the lower support arm ring is sleeved on the lifting spindle in a sliding mode, a driving mechanism for driving the lower support arm ring to move downwards is arranged on the lifting spindle, a reset spring is sleeved on the lifting spindle, a reset spring adjusting nut is connected to the lower end of the lifting spindle in a threaded mode, the lower support arm ring, the reset spring and the reset spring adjusting nut are in contact in sequence, the claw pieces are provided with multiple groups, the upper ends of all the claw pieces are arranged around the lower end of the lifting spindle, a two-link mechanism is correspondingly arranged on each claw piece, the upper end of each claw piece is hinged to the lower support arm ring, the lower end of each two-link mechanism is fixed to each claw piece, the upper end of each two-link mechanism is hinged to the upper support arm ring, and in the downward movement process of the lower support arm ring, the lower end of each claw piece rotates towards the direction close to the axis of the lifting spindle relative to the upper end.

2. The road coring gripper of claim 1, wherein: the radius of a hinge hole distribution circle used for hinging the claw piece on the lower supporting arm ring is larger than that of a hinge hole distribution circle used for hinging the two link mechanisms on the upper supporting arm ring.

3. The road coring gripper of claim 2, wherein: the driving mechanism is an electromagnetic linear actuator, a linear motion part of the electromagnetic linear actuator moves up and down in the axis direction of the lifting spindle and is arranged on the lifting spindle, a limiter of the electromagnetic linear actuator is used for limiting the upper limit of the linear motion part of the electromagnetic linear actuator, and the linear motion part of the electromagnetic linear actuator is pressed on the upper side of the lower support arm ring.

4. The road coring gripper of claim 1, 2 or 3, wherein: the claw piece is a cylindrical panel body with the angle less than 180 degrees.

5. The road coring gripper of claim 1, 2 or 3, wherein: the three groups of claw petals are cylindrical surface plate bodies with the angles of 100 degrees and 120 degrees, and when the lower supporting arm ring is positioned at the upper limit position, all the claw petals are coaxially arranged with the lifting main shaft.

6. The road coring gripper of claim 5, wherein: 45-degree crossed oblique anti-slip lines are arranged on the inner sides of the claw pieces, and the inner cylindrical surfaces of the claw pieces have 1-degree negative draft angles relative to the outer cylindrical surfaces.

7. The road coring gripper of claim 5, wherein: the two link mechanisms are connecting rods and claw section connecting arms, the end portions of the connecting rods are hinged, the connecting rods are straight rods, the claw section connecting arms are arc-shaped rods, the lower ends of the claw section connecting arms are fixed with the melon sections, and the upper ends of the connecting rods are hinged to the upper supporting arm rings.

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