Disclosure of Invention
The invention aims to solve the technical problem of providing a water level measuring device for geotechnical engineering investigation, which can avoid slipping of a connecting rope and has good stability.
In order to solve the technical problems, the invention adopts the technical scheme that the water level measuring device for geotechnical engineering investigation with good stability comprises a frame, a winding drum, a connecting rope and a measuring head;
the winding drum is rotatably arranged on the frame, a spiral winding groove is formed in the surface of the winding drum, a sine wave-shaped balancing groove is formed in the inner wall of the spiral winding groove along the spiral direction, one end of the connecting rope is wound in the spiral winding groove, and the measuring head is arranged at the other end of the connecting rope.
In an alternative embodiment, the cross-sectional shape of the spiral wound groove is trapezoidal, and the balancing groove is provided at the bottom of the spiral wound groove.
In an alternative embodiment, the bottom of the spiral winding groove is an arc surface, and the cross section of the balancing groove is arcuate.
In an alternative embodiment, one end of the spiral winding groove is provided with a rope clamping buckle, the other end of the spiral winding groove is provided with a rope outlet groove, one end of the connecting rope is connected with the rope clamping buckle, and the other end of the connecting rope extends out of the rope outlet groove.
In an alternative embodiment, the bottom of the spiral winding groove is a cambered surface, and the radian of the bottom of the spiral winding groove gradually increases from one end close to the rope clamping buckle to one end close to the rope outlet groove.
In an alternative embodiment, the cross section of the balancing groove is arc-shaped, and the cross section area of the balancing groove gradually increases from one end close to the rope clamping buckle to one end close to the rope outlet groove.
In an alternative embodiment, the device further comprises an unreeling motor, wherein the unreeling motor is arranged on the frame, and the unreeling motor is connected with the winding drum.
In an alternative embodiment, graduation marks are arranged on the connecting rope.
In an alternative embodiment, the device further comprises a guide wheel which is arranged on the frame in a sliding way along an axis, and the axis of the guide wheel is parallel to the axis of the winding drum.
In an alternative embodiment, the surface of the guide wheel is provided with a water-absorbing layer.
The water level measuring device for geotechnical engineering investigation has the advantages that the winding drum is rotatably connected with the frame, the winding drum can be rotated to perform winding and unwinding operations after the frame is fixed, the spiral winding grooves used for limiting and guiding the connecting ropes are formed in the surface of the winding drum, the balance grooves are arranged on the inner walls of the spiral winding grooves in a sine wave shape, when the connecting ropes pass through the balance grooves, the balance conditions of the connecting ropes in the winding and unwinding process are improved through friction forces in different directions, the stability of the winding drum in the axial direction is improved, the plumb property of the connecting ropes is guaranteed, the problems of slipping, abrasion and even dislocation of the connecting ropes can be avoided, the overall balance of the water level measuring device is improved, and the measuring precision is improved.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 2, a water level measuring device for geotechnical engineering investigation with good stability comprises a frame, a winding drum, a connecting rope and a measuring head;
the winding drum is rotatably arranged on the frame, a spiral winding groove is formed in the surface of the winding drum, a sine wave-shaped balancing groove is formed in the inner wall of the spiral winding groove along the spiral direction, one end of the connecting rope is wound in the spiral winding groove, and the measuring head is arranged at the other end of the connecting rope.
The water level measuring device for geotechnical engineering investigation has the advantages that the water level measuring device for geotechnical engineering investigation with good stability is provided, the winding drum is rotatably connected with the frame, the winding drum can be rotated to carry out winding and unwinding operations after the frame is fixed, the surface of the winding drum is provided with the spiral winding groove for limiting and guiding the connecting rope, the projection shape of the balancing groove on the inner wall of the spiral winding groove is sine-wave-shaped, when the connecting rope passes through the balancing groove, the balancing condition of the connecting rope in the winding and unwinding process is improved through friction forces in different directions, the stability of the winding drum in the axial direction is improved, the plumb property of the connecting rope is guaranteed, the problems of slipping, abrasion and even dislocation of the connecting rope can be avoided, the overall balance of the water level measuring device is improved, and the measuring precision is improved.
Further, the cross section of the spiral winding groove is trapezoid, and the balance groove is arranged at the bottom of the spiral winding groove.
It can be seen from the above description that the cross section of the spiral winding groove is designed into a trapezoid shape, so that the connecting rope can be conveniently connected to enter and exit the rope, a certain constraint effect is maintained on the connecting rope, the connecting rope is prevented from being misplaced, the connecting rope is matched with the groove bottom of the spiral winding groove under the action of dead weight and the gravity of the measuring head, and the swinging generated in the winding and unwinding process is balanced through the balancing groove in sine wave arrangement, so that the purpose of improving the measuring precision is finally achieved.
Further, the bottom of the spiral winding groove is an arc surface, and the section of the balancing groove is arc-shaped.
According to the technical scheme, the bottom of the spiral winding groove is designed to be an arc surface, so that the equivalent friction coefficient of the spiral winding groove can be increased, the balance of the connecting rope in the winding and unwinding process is improved, the balance groove is designed to be an arc shape, on one hand, the equivalent friction coefficient of the spiral winding groove is increased, on the other hand, the effect of removing dust and water on the surface of the connecting rope is achieved, and the connecting rope is prevented from slipping.
Further, one end of the spiral winding groove is provided with a rope clamping buckle, the other end of the spiral winding groove is provided with a rope outlet groove, one end of the connecting rope is connected with the rope clamping buckle, and the other end of the connecting rope extends out of the rope outlet groove.
From the above description, the rope clamping buckle plays a role in clamping and fixing the connecting rope, and the rope outlet groove plays a role in guiding and limiting the winding and unwinding connecting rope.
Further, the bottom of the spiral winding groove is an arc surface, and the radian of the bottom of the spiral winding groove gradually increases from one end close to the rope clamping buckle to one end close to the rope outlet groove.
From the above description, when the connecting rope is wound and unwound, the acting force of the spiral winding groove on the connecting rope from one end of the rope clamping buckle to one end of the rope outlet groove is sequentially from tight to loose, so that the radian of the groove bottom of the spiral winding groove is designed to be gradually increased according to the change from tight to loose, namely, the equivalent friction coefficient is gradually reduced, the axial balance capacity of the winding drum during winding and unwinding is improved, and the measurement accuracy is ensured.
Further, the cross section of the balancing groove is arc-shaped, and the cross section area of the balancing groove gradually increases from one end close to the rope clamping buckle to one end close to the rope outlet groove.
From the above description, the cross-sectional area of the balancing groove is gradually increased from the fixed end of the connecting rope to the rope outlet end, so that on one hand, the equivalent friction coefficient of the spiral winding groove can be controlled to be gradually reduced, and on the other hand, the effect of removing dust and water on the surface of the connecting rope is facilitated, and the connecting rope is prevented from slipping.
Further, the machine also comprises an unreeling motor, wherein the unreeling motor is arranged on the frame, and the unreeling motor is connected with the winding drum.
From the above description, the unreeling motor plays a role of controlling the reeling and unreeling speed of the reel.
Furthermore, the connecting rope is provided with scale marks.
From the above description, the scale marks play a role in conveniently observing the winding and unwinding length of the connecting rope.
Further, the device also comprises a guide wheel, wherein the guide wheel is arranged on the frame in a sliding way along the axis, and the axis of the guide wheel is parallel to the axis of the winding drum.
From the above description, the guide wheel pair connecting rope plays a role in auxiliary fixing and guiding, so that the stability of the measuring device is improved.
Further, a water absorption layer is arranged on the surface of the guide wheel.
From the above description, the water absorbing layer plays a role in removing dust and water on the surface of the connecting rope and preventing the connecting rope from slipping.
Referring to fig. 1 to 2, a water level measuring device for geotechnical engineering investigation with good stability comprises a frame 1, a winding drum 2, a connecting rope 3 and a measuring head 4;
The winding drum 2 is cylindrical, the winding drum 2 is rotatably arranged on the frame 1, a spiral winding groove 21 is formed in the surface of the winding drum 2, a sine wave-shaped balance groove 22 is formed in the inner wall of the spiral winding groove 21 along the spiral direction, the grooving width of the balance groove 22 is half of that of the spiral winding groove 21, one end of the connecting rope 3 is wound in the spiral winding groove 21, and the measuring head 4 is arranged at the other end of the connecting rope 3.
The spiral winding groove 21 has an isosceles trapezoid cross section, and the balance groove 22 is provided at the bottom of the spiral winding groove 21. The bottom of the spiral winding groove 21 is an arc surface, and the cross section of the balancing groove 22 is an arc shape. One end of the spiral winding groove 21 is provided with a rope clamping buckle 211, one end of the rope clamping buckle 211 is hinged to the winding drum 2, the winding drum 2 is provided with a buckle for fixing the rope clamping buckle 211, the other end of the spiral winding groove 21 is provided with a rope outlet groove 212, the rope outlet groove 212 is provided with an arc slope, one end of the connecting rope 3 is connected with the rope clamping buckle 211, and the other end of the connecting rope 3 extends out of the rope outlet groove 212. The groove bottom of the spiral winding groove 21 is a cambered surface, and the radian of the groove bottom of the spiral winding groove 21 gradually increases from one end close to the rope clamping buckle 211 to one end close to the rope outlet groove 212. The cross-sectional shape of the balancing groove 22 is arcuate, and the cross-sectional area of the balancing groove 22 gradually increases from one end near the rope clamping buckle 211 to one end near the rope outlet groove 212. The machine further comprises an unreeling motor 5, wherein the unreeling motor 5 is arranged on the frame 1, and the unreeling motor 5 is connected with the winding drum 2 through a coupler. The connecting rope 3 is provided with scale marks. Also comprises a guide wheel 6, wherein the guide wheel 6 is arranged on the frame 1 in a sliding way along the axis, and the axis of the guide wheel 6 is parallel to the axis of the winding drum 2. The surface of the guide wheel 6 is provided with an activated carbon water-absorbing layer.
In summary, the invention provides the water level measuring device for geotechnical engineering investigation, which has good stability, the winding drum is rotationally connected with the frame, the winding drum can be rotated to perform winding and unwinding operations after the frame is fixed, the surface of the winding drum is provided with the spiral winding groove for limiting and guiding the connecting rope, the balance groove is arranged on the inner wall of the spiral winding groove in a sine wave shape, when the connecting rope passes through the balance groove, the balance condition of the connecting rope in the winding and unwinding process is improved through friction forces in different directions, the stability of the winding drum in the axial direction is improved, the plumb property of the connecting rope is ensured, the problems of slipping, abrasion and even dislocation of the connecting rope can be avoided, the overall balance of the water level measuring device is improved, and the measuring precision is improved. The cross section shape of the spiral winding groove is designed to be trapezoidal, so that the connecting rope can be conveniently connected to enter and exit the rope, a certain constraint effect is kept on the connecting rope, the connecting rope is prevented from being misplaced, the connecting rope is matched with the groove bottom of the spiral winding groove under the action of dead weight and the gravity of the measuring head, the swinging generated in the winding and unwinding process is balanced through the balancing groove which is arranged in a sine wave shape, and finally the purpose of improving the measuring precision is achieved. The bottom of spiral coiling groove adopts the cambered surface design, can increase spiral coiling groove's equivalent coefficient of friction to promote the equilibrium of connecting rope at receive and release book in-process, the balancing tank adopts the bow-shaped design, is in order to increase spiral coiling groove's equivalent coefficient of friction on the one hand, on the other hand also can play the effect of getting rid of connecting rope surface dust, water liquid, prevents that connecting rope from skidding. The rope clamping buckle plays a role in clamping and fixing the connecting rope, and the rope outlet groove plays a role in guiding and limiting the winding and unwinding connecting rope. When the connecting rope is wound and unwound, the acting force of the spiral winding groove on the connecting rope from one end of the rope clamping buckle to one end of the rope outlet groove is sequentially from tight to loose, so that the radian of the groove bottom of the spiral winding groove is designed to be gradually increased according to the change from tight to loose, namely, the equivalent friction coefficient is gradually reduced, the axial balance capacity of the winding drum during winding and unwinding is improved, and the measurement accuracy is ensured. The cross-sectional area of the balancing groove adopts the design of gradually increasing from the fixed end of the connecting rope to the rope outlet end, so that on one hand, the equivalent friction coefficient of the spiral winding groove can be controlled to be gradually reduced, and on the other hand, the effect of removing dust and water on the surface of the connecting rope is facilitated, and the connecting rope is prevented from slipping. The unreeling motor plays a role in controlling the reeling and unreeling speed of the reel. The scale marks play a role in conveniently observing the winding and unwinding length of the connecting rope. The guide wheel pair connecting rope plays a role in auxiliary fixing and guiding, so that the stability of the measuring device is improved. The water absorption layer plays a role in removing dust and water on the surface of the connecting rope and prevents the connecting rope from slipping.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.