Ranging hand-push wheel with fixed point marking function

Abstract

The utility model provides a distance measuring hand-push wheel with a fixed point marking function, which relates to the technical field of measuring equipment and comprises a distance measuring wheel, a distance measuring assembly is mounted on the distance measuring wheel, a support frame is fixed on the distance measuring assembly, and a limiting mechanism for preventing the distance measuring wheel from idling is arranged on the support frame. The supporting frame is provided with a supporting mechanism used for supporting the distance measuring wheel, and the distance measuring assembly is provided with a marking mechanism used for conducting fixed-point marking. According to the distance measuring hand-push wheel with the fixed-point marking function, force in the direction of the distance measuring wheel can be applied to the mounting ring and the first pressure spring through elastic force generated by deformation of the first pressure spring, so that the sliding rod drives the ball universal wheel to abut against the side face of the distance measuring wheel, and a certain degree of pressure is applied to the distance measuring wheel; the condition that the distance measuring wheel idles when encountering obstacles such as pebbles and branches is avoided, the lime rod can be driven by the electric push rod to mark the ground, and the fixed-point marking function is achieved.

Description

Technical Field

[0001] The utility model relates to a hand push wheel, in particular to a distance measuring hand push wheel with a fixed point marking function, belonging to the technical field of measuring equipment. Background Art

[0002] A distance measuring wheel is a handheld measuring tool that measures ground distance by rolling the wheel. It consists of a wheel with a known circumference, a handle and a counter, and is suitable for outdoor measurement in fields such as construction, engineering and agriculture. When operating, the wheel is pushed from the starting point to the end point, and the counter records the number of wheel revolutions, which is then multiplied by the circumference of the wheel to get the distance.

[0003] A hand-pushed roller rangefinder disclosed in Chinese patent disclosure specification CN220153444U has a protective airbag in the protective assembly that automatically intakes and exhausts air through a one-way air intake valve and a one-way air exhaust valve when the device shakes due to a rough road surface, thereby playing a buffering role, thereby preventing the display screen assembly from being damaged by the impact force generated by frequent shaking, and preventing the staff from getting injured by the hands due to long-term operation of the device.

[0004] In actual use, it is found that when the above-mentioned hand-pushed roller distance meter encounters obstacles such as pebbles and branches, the wheels may be lifted up, resulting in idling, which in turn has an adverse effect on the measurement results. At the same time, when encountering unavoidable obstacles during the measurement process, another staff member is required to remove them, reducing the measurement efficiency. For this reason, we provide a distance measuring hand-pushed wheel with a fixed-point marking function. Utility Model Content

[0005] The utility model provides a distance measuring hand wheel with a fixed point marking function, which can effectively reduce the idling of the hand wheel and can support the hand wheel at the same time, so that one worker can complete the purpose of clearing obstacles.

[0006] The utility model is realized by the following technical scheme: comprising a distance measuring wheel, a distance measuring assembly is installed on the distance measuring wheel, a support frame is fixed on the distance measuring assembly, a limiting mechanism for preventing the distance measuring wheel from idling is arranged on the support frame, a supporting mechanism for supporting the distance measuring wheel is arranged on the support frame, and a marking mechanism for fixed point marking is arranged on the distance measuring assembly.

[0007] The limiting mechanism includes a fixed block fixed on the side of the support frame, a first fixed seat and a second fixed seat are fixed on the side of the fixed block, a sliding rod is slidably connected in the reserved holes of the first and second fixed seats, a mounting ring is fixed on the side of the sliding rod, and a first compression spring mounted on the side of the sliding rod is fixed on a side where the mounting ring and the first fixed seat are close to each other.

[0008] The support mechanism comprises a mounting seat fixed to the side of the support frame, a connecting seat is hinged on the mounting seat, a limiting rod is slidably contacted between the connecting seat and the mounting seat, a first stopper is fixed to one end of the limiting rod, a second compression spring is arranged on the inner wall of the other end of the limiting rod, second stops are fixed to both ends of the second compression spring, and a first adjustment rod and a second adjustment rod are hinged on the connecting seat;

[0009] The marking mechanism comprises an electric push rod fixed on the side of the distance measuring component, and a lime rod is fixed on the output end of the electric push rod.

[0010] Specifically, one end of the sliding rod away from the second fixing seat extends to one side of the sliding rod, and the side surface of the sliding rod is slidably connected to the reserved hole of the first fixing seat.

[0011] Specifically, a ball universal wheel is fixed to one end of the slide bar away from the first fixing seat, and a side of the ball universal wheel close to the distance measuring wheel is in sliding contact with the distance measuring wheel, thereby reducing the friction between the slide bar and the distance measuring wheel and avoiding jamming.

[0012] Furthermore, the upper end of the first adjusting rod is hinged with a limit ring, the side surface of the limit ring is threadedly connected to a threaded rod, and the upper end of the second adjusting rod is provided with a hole that is in sliding contact with the threaded rod. The first adjusting rod and the second adjusting rod can be locked by the coordinated setting of the limit ring and the threaded rod.

[0013] Specifically, a knob is fixed at one end of the threaded rod, and the outer contour of the knob is cylindrical. The knob is provided to facilitate the rotation of the threaded rod and provide a reasonable force point.

[0014] Furthermore, handles are fixed to the upper ends of the first adjusting rod and the second adjusting rod, and the handles are provided to facilitate the use of the device.

[0015] Specifically, the two second stoppers have protrusions at their ends close to each other, and the two second stoppers are in sliding contact with the inner wall of the limiting rod through the protrusions to prevent the second compression spring and the second stopper from falling off the limiting rod.

[0016] The utility model provides a distance measuring hand wheel with a fixed point marking function, which has the following beneficial effects:

[0017] 1. The distance measuring hand wheel with fixed-point marking function can exert a force in the direction of the distance measuring wheel on the mounting ring and the first compression spring through the elastic force generated by the deformation of the first compression spring, so that the sliding rod drives the ball universal wheel to press against the side of the distance measuring wheel, and exerts a certain degree of pressure on the distance measuring wheel, so as to avoid the distance measuring wheel being lifted up and causing idling when encountering obstacles such as pebbles and branches. The electric push rod can drive the lime rod to mark the ground, so as to realize the fixed-point marking function.

[0018] 2. The distance measuring hand wheel with a fixed point marking function can deform the second compression spring by pressing the second stopper, thereby causing the two second stoppers to enter the limit rod. At this time, the limit rod is removed through the first stopper, and the connecting seat can drive the first adjusting rod and the second adjusting rod to rotate. The first adjusting rod and the second adjusting rod can also rotate on the connecting seat, thereby supporting the distance measuring wheel so that the staff can clear obstacles alone without affecting the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 For the utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 For the utility model Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 4 For the utility model Figure 1 A magnified schematic diagram of the structure at C in the middle;

[0023] Figure 5 For the utility model Figure 1 A magnified schematic diagram of the structure at D in the middle;

[0024] Figure 6 It is a schematic diagram of the connection between the mounting seat and the limiting rod of the utility model.

[0025] Description of Reference Numerals

[0026] 1. Distance measuring wheel; 2. Distance measuring component;

[0027] 3. Limiting mechanism; 301. Fixed block; 302. First fixed seat; 303. Second fixed seat; 304. Sliding rod; 305. Mounting ring; 306. First compression spring; 307. Ball universal wheel;

[0028] 4. Support mechanism; 401. Mounting seat; 402. Connecting seat; 403. Limit rod; 4031. First stopper; 4032. Second compression spring; 4033. Second stopper; 404. First adjusting rod; 405. Second adjusting rod; 406. Limit ring; 407. Threaded rod; 408. Knob; 409. Handle;

[0029] 5. Marking mechanism; 501. Electric push rod; 502. Lime rod; 6. Support frame. DETAILED DESCRIPTION

[0030] See also Figure 1 to Figure 6The embodiment of the utility model provides a distance measuring hand wheel with a fixed point marking function, including a distance measuring wheel 1, a distance measuring component 2 is installed on the distance measuring wheel 1, the distance measuring component 2 is composed of a counter and a protective shell, and the counter can record the number of rotations of the distance measuring wheel 1, a support frame 6 is fixed on the distance measuring component 2, and a limiting mechanism 3 for preventing the distance measuring wheel 1 from idling is arranged on the support frame 6, and the limiting mechanism 3 includes a fixing block 301 fixed to the side of the support frame 6, and a first fixing seat 3 is fixed to the side of the fixing block 301 02 and the second fixed seat 303, the first fixed seat 302 and the second fixed seat 303 are slidably connected with a sliding rod 304 in the reserved holes, the sliding rod 304 extends from one end of the second fixed seat 303 to one side of the sliding rod 304, the side of the sliding rod 304 is slidably connected with the reserved hole of the first fixed seat 302, the side of the sliding rod 304 is fixed with a mounting ring 305, and the side where the mounting ring 305 and the first fixed seat 302 are close to each other is fixed with a first compression spring 306 mounted on the side of the sliding rod 304.

[0031] Please refer to Figure 2 Specifically, the first compression spring 306 is in a loaded state. Since the slide bar 304 limits the first compression spring 306, the elastic force generated by the first compression spring 306 will apply pressure to the mounting ring 305, so that the mounting ring 305 drives the slide bar 304 to move in the direction of the distance measuring wheel 1, and then the slide bar 304 drives the ball universal wheel 307 to press against the side of the distance measuring wheel 1. Preferably, grooves of different depths are evenly distributed in an annular shape on the side of the distance measuring wheel 1, and the ball universal wheel 307 and the slide bar 304 are pressed against each other. The rod 304 will slide back and forth on the first fixed seat 302 and the second fixed seat 303 under the action of the elastic force of the first compression spring 306, effectively reducing the idling of the distance measuring wheel 1. A ball universal wheel 307 is fixed to the end of the sliding rod 304 away from the first fixed seat 302, and the side of the ball universal wheel 307 close to the distance measuring wheel 1 is in sliding contact with the distance measuring wheel 1, reducing the friction between the sliding rod 304 and the distance measuring wheel 1, avoiding direct contact between the sliding rod 304 and the side of the distance measuring wheel 1, and avoiding the situation of jamming.

[0032] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 6The support frame 6 is provided with a support mechanism 4 for supporting the distance measuring wheel 1. The support mechanism 4 includes a mounting seat 401 fixed to the side of the support frame 6. A connecting seat 402 is hinged on the mounting seat 401. The connecting seat 402 can rotate around the mounting seat 401. The connecting seat 402 and the mounting seat 401 are in sliding contact with a limit rod 403. A first stopper 4031 is fixed to one end of the limit rod 403. A second compression spring 4032 is provided on the inner wall of the other end of the limit rod 403. Both ends of the second compression spring 4032 are fixed There is a second stopper 4033, and one end of the two second stops 4033 close to each other has a protrusion. The two second stops 4033 slide in contact with the inner wall of the limiting rod 403 through the protrusion to prevent the second compression spring 4032 and the second stopper 4033 from falling off the limiting rod 403, thereby limiting the second compression spring 4032 and the second stopper 4033. The first adjusting rod 404 and the second adjusting rod 405 are hinged on the connecting seat 402, and the first adjusting rod 404 and the second adjusting rod 405 can rotate around the connecting seat 402.

[0033] Please refer to Figure 6 Specifically, by pressing the two second stops 4033, the second compression spring 4032 can be deformed, and the two second stops 4033 will slide on the inner wall of the mounting seat 401 until the two second stops 4033 are completely moved into the interior of the mounting seat 401. At this time, the limiting rod 403 can be pulled by the first stop 4031, so that the limiting rod 403 no longer limits the connecting seat 402 and the mounting seat 401, so that the first adjustment rod 404 and the second adjustment rod 405 can be lowered when the distance measuring wheel 1 needs to be supported.

[0034] The upper end of the first adjusting rod 404 is hinged to a limit ring 406, and a threaded rod 407 is threadedly connected to the side of the limit ring 406. A hole that slides in contact with the threaded rod 407 is opened at the upper end of the second adjusting rod 405, and a knob 408 is fixed at one end of the threaded rod 407. The outer contour of the knob 408 is cylindrical. Handles 409 are fixed to the upper ends of the first adjusting rod 404 and the second adjusting rod 405. The first adjusting rod 404 and the second adjusting rod 405 can be limited by rotating the limit ring 406. The threaded rod 407 is easily rotated by the knob 408, providing a reasonable force point. The rotation of the threaded rod 407 will be screwed in and out of the limit ring 406, and the threaded rod 407 can be moved to the hole opened at the upper end of the second adjusting rod 405, and then the first adjusting rod 404 and the second adjusting rod 405 are fixed by the threaded rod 407, so as to avoid the first adjusting rod 404 and the second adjusting rod 405 from being opened when the distance measuring wheel 1 is not needed to be supported.

[0035] Please refer to Figure 1 and Figure 5The distance measuring component 2 is provided with a marking mechanism 5 for fixed point marking. The marking mechanism 5 includes an electric push rod 501 fixed to the side of the distance measuring component 2. A lime rod 502 is fixed to the output end of the electric push rod 501. The start of the electric push rod 501 will drive the lime rod 502 to move toward the ground. Specifically, the lime rod 502 is made of lime, and the white lime powder will remain on the ground and mark the fixed point. The fixed point marking process does not need to damage the ground.

[0036] Working principle: The elastic force generated by the deformation of the first compression spring 306 can apply a force to the mounting ring 305 and the first compression spring 306 in the direction of the distance measuring wheel 1, so that the slide bar 304 drives the ball universal wheel 307 to press against the side of the distance measuring wheel 1, and exerts a certain degree of pressure on the distance measuring wheel 1 to prevent the distance measuring wheel 1 from being lifted up when encountering obstacles such as pebbles and branches, resulting in idling. The electric push rod 501 can drive the lime rod 502 to mark the ground, thereby realizing fixed-point marking.

[0037] When it is necessary to clear the obstacle, the second compression spring 4032 can be deformed by pressing the second stopper 4033, so that the two second stops 4033 enter the limit rod 403. When the second stopper 4033 enters the limit rod 403, the first stopper 4031 is pulled to remove the limit rod 403, and the connecting seat 402 can drive the first adjusting rod 404 and the second adjusting rod 405 to rotate. The first adjusting rod 404 and the second adjusting rod 405 can also rotate on the connecting seat 402 to make the first adjusting rod 404 and the second adjusting rod 405 contact the ground, thereby supporting the distance measuring wheel 1, so that the staff can clear the obstacle alone without affecting the measurement result.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A distance measuring hand wheel with a fixed point marking function, comprising a distance measuring wheel (1), a distance measuring component (2) being mounted on the distance measuring wheel (1), a support frame (6) being fixed on the distance measuring component (2), characterized in that: The support frame (6) is provided with a limiting mechanism (3) for preventing the distance measuring wheel (1) from idling, the support frame (6) is provided with a supporting mechanism (4) for supporting the distance measuring wheel (1), and the distance measuring component (2) is provided with a marking mechanism (5) for marking a fixed point; The limiting mechanism (3) comprises a fixing block (301) fixed on the side of the support frame (6); a first fixing seat (302) and a second fixing seat (303) are fixed on the side of the fixing block (301); a sliding rod (304) is slidably connected in the reserved holes of the first fixing seat (302) and the second fixing seat (303); a mounting ring (305) is fixed on the side of the sliding rod (304); a first compression spring (306) sleeved on the side of the sliding rod (304) is fixed on a side where the mounting ring (305) and the first fixing seat (302) are close to each other; The support mechanism (4) comprises a mounting seat (401) fixed to a side of the support frame (6); a connecting seat (402) is hingedly connected to the mounting seat (401); a limiting rod (403) is slidably contacted between the connecting seat (402) and the mounting seat (401); a first stopper (4031) is fixed to one end of the limiting rod (403); a second compression spring (4032) is provided on the inner wall of the other end of the limiting rod (403); second stops (4033) are fixed to both ends of the second compression spring (4032); and a first adjustment rod (404) and a second adjustment rod (405) are hingedly connected to the connecting seat (402); The marking mechanism (5) comprises an electric push rod (501) fixed on the side of the distance measuring component (2), and a lime rod (502) is fixed to the output end of the electric push rod (501).

2. The distance measuring hand wheel with fixed point marking function according to claim 1, characterized in that: One end of the slide bar (304) away from the second fixing seat (303) extends to one side of the slide bar (304), and the side surface of the slide bar (304) is slidably connected to the reserved hole of the first fixing seat (302).

3. The distance measuring hand wheel with fixed point marking function according to claim 1, characterized in that: A ball universal wheel (307) is fixed to one end of the sliding rod (304) away from the first fixed seat (302), and a side of the ball universal wheel (307) close to the distance measuring wheel (1) is in sliding contact with the distance measuring wheel (1).

4. The distance measuring hand wheel with fixed point marking function according to claim 1, characterized in that: The upper end of the first adjusting rod (404) is hinged with a limit ring (406), the side of the limit ring (406) is threadedly connected with a threaded rod (407), and the upper end of the second adjusting rod (405) is provided with a hole that is in sliding contact with the threaded rod (407).

5. The distance measuring hand wheel with fixed point marking function according to claim 4, characterized in that: A knob (408) is fixed to one end of the threaded rod (407), and the outer contour of the knob (408) is cylindrical.

6. The distance measuring hand wheel with fixed point marking function according to claim 1, characterized in that: A handle (409) is fixed to the upper ends of the first adjustment rod (404) and the second adjustment rod (405).

7. The distance measuring hand wheel with fixed point marking function according to claim 1, characterized in that: The two second stoppers (4033) have a protrusion at one end close to each other, and the two second stoppers (4033) are in sliding contact with the inner wall of the limiting rod (403) via the protrusion.

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