阅读说明：本技术 一种建筑工程用的钢卷尺 (Steel tape for constructional engineering ) 是由 魏敏 于 2021-10-20 设计创作，主要内容包括：本发明公开了一种建筑工程用的钢卷尺,包括钢卷尺本体,钢卷尺本体设有计数机构、标记机构、控速机构；计数机构能直接读出测量结果,不仅读数准确,还能避免误读；标记机构能方便、准确、清晰地标记出测量点；控速机构能有效控制发条释放能量快慢,能减缓尺条的回缩速度,保护手指不被划破,防止钢卷尺的内部结构遭到损坏；还设有水平仪,能测量水平度,提高了工作效率；还设有卡扣和提绳,方便携带和使用,防止丢失。(The invention discloses a steel tape for constructional engineering, which comprises a steel tape body, wherein the steel tape body is provided with a counting mechanism, a marking mechanism and a speed control mechanism; the counting mechanism can directly read out the measurement result, so that the reading is accurate and the misreading can be avoided; the marking mechanism can conveniently, accurately and clearly mark a measuring point; the speed control mechanism can effectively control the speed of the spring to release energy, slow down the retraction speed of the tape, protect fingers from being scratched and prevent the internal structure of the steel tape from being damaged; the leveller is also arranged, so that levelness can be measured, and the working efficiency is improved; still be equipped with buckle and carry the rope, conveniently carry and use, prevent to lose.)

1. The utility model provides a steel tape measure that building engineering used, includes the chi box, is equipped with the chi strip access & exit and prescribes a limit to the flexible brake spare of chi strip on one side of chi box, and the chi box is inside to be equipped with the axis, and it has the tape measure wheel to wear to overlap on the axis, and the tape measure wheel central cavity is equipped with the clockwork spring, and tape measure wheel periphery is convoluteed there is the chi strip, and the chi strip stretches out outside the chi box from the access & exit, and the chi strip free end is equipped with couple, characterized by: the steel tape also comprises a counting mechanism, a marking mechanism and a speed control mechanism;

the counting mechanism is used for displaying the extending length number of the ruler strip and comprises through holes uniformly arranged on the ruler strip along the length direction, a driving gear and a transmission gear which are rotatably arranged in the ruler box and a mechanical counter exposed out of the ruler box, wherein the teeth of the driving gear are matched with the through holes on the ruler strip, and the transmission gear is in transmission connection with the driving gear and the mechanical counter respectively;

the marking mechanism is used for marking a measuring terminal and comprises a shell, an ink storage container, a pressurizer and a spray head, wherein the shell is arranged at an inlet and an outlet of a ruler strip, a cavity is arranged at the upper part of the shell, a ruler strip inlet and outlet channel is arranged at the middle part of the shell, a slide block is arranged at the lower part of the shell, an elastic piece is arranged on the slide block, the ink storage container is used for storing ink, the ink storage container is arranged in the cavity of the shell, the ink storage container is in a leather bag type, an ink injection port and an ink outlet are arranged on the ink storage container, a sealing plug is arranged on the ink injection port, the pressurizer is arranged in the cavity of the shell and comprises a pressurizing pipe, one end of the pressurizing pipe is provided with a liquid inlet and a liquid outlet, a liquid inlet check valve is arranged on the liquid inlet and is communicated with the ink outlet of the ink storage container, a liquid outlet check valve is arranged on the liquid outlet and is communicated with the spray head, a piston is arranged in the pressurizing pipe, a pressure rod extending out of the shell is arranged on the piston, and a reset spring is arranged on the pressure rod, the liquid spraying head is arranged on the sliding block and stretches along with the sliding of the sliding block;

the speed control mechanism is arranged in the ruler box and used for enabling the clockwork to slowly and uniformly release energy, the speed control mechanism comprises a ratchet wheel, an equal-arm lever, a torsion spring and a retaining post, the ratchet wheel is sleeved on the middle shaft in a penetrating way and connected to the tape winding wheel through a connecting plate, the ratchet wheel rotates along with the tape winding wheel, the direction of the ratchet on the ratchet wheel is opposite to the direction of the tape winding wheel when the tape is drawn outwards, the equal-arm lever is connected to the ruler box through a fulcrum shaft and can rotate on the fulcrum shaft, two ends of the equal-arm lever are respectively provided with a claw hook, the two claw hooks are alternately blocked with the ratchet on the ratchet wheel in a one-way manner, the torsion spring is formed by spirally winding a thin steel wire, the torsion spring is sleeved on the fulcrum shaft, one end of the torsion spring is fixed on the fulcrum shaft, and the other end of the torsion spring is fixed on the equal-arm lever; the number of the stop posts is two, the two stop posts are fixed on the ruler box, and the two stop posts limit the swing amplitude of the equal-arm lever.

2. A construction steel tape as claimed in claim 1, wherein: the counting mechanism further comprises a supporting block, the supporting block is arranged at the bottom in the ruler box, and a groove matched with teeth of the driving gear is formed in the position, opposite to the driving gear, of the supporting block.

3. A construction steel tape as claimed in claim 1, wherein: and a bubble level meter is arranged on the outer wall of the ruler box.

4. A construction steel tape as claimed in claim 1, wherein: the ruler box is made of ABS novel plastic.

5. A construction steel tape as claimed in claim 1, wherein: the ruler box is provided with a buckle which can hang and buckle the steel measuring tape on the waistband.

6. A construction steel tape as claimed in claim 1, wherein: the ruler box is provided with a lifting rope.

Technical Field

The invention belongs to the technical field of constructional engineering measurement, and particularly relates to a steel tape for constructional engineering.

Background

The steel tape is a common measuring tool in constructional engineering, and helps to a great extent project acceptance, project paying-off and project measurement. However, the existing steel tape needs manual reading from the tape, so that the problems of inaccurate reading and misreading are easily caused, and particularly in the building engineering, the tape extends out for a long time, so that misreading is easily caused; in the building engineering, the steel tape needs to be marked after the length is measured, usually, a sharp object is used for marking and recording on a wall surface, so that the mark is easy to lose, the marked position is not accurate enough, and the engineering quality is influenced; when the conventional steel tape retracts, the energy stored by the spiral spring can be released instantly, so that the retraction speed of the tape is too high, the tape bounces, the fingers of a user are easily scratched, other objects are easily hung, the tape cannot retract, and the tape is easily hung by other objects particularly in places with more sundries on a building site.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a steel tape for constructional engineering.

The technical scheme adopted by the invention is as follows: the utility model provides a steel tape measure that building engineering used, includes the chi box, is equipped with the chi strip access & exit and prescribes a limit to the flexible brake spare of chi strip on one side of chi box, and the chi box is inside to be equipped with the axis, and it has the tape measure wheel to wear to overlap on the axis, and the tape measure wheel central cavity is equipped with the clockwork spring, and tape measure wheel periphery is convoluteed there is the chi strip, and the chi strip stretches out outside the chi box from the access & exit, and the chi strip free end is equipped with couple, characterized by: the steel tape also comprises a counting mechanism, a marking mechanism and a speed control mechanism;

the counting mechanism is used for displaying the digital extension length of the ruler strip and comprises through holes uniformly arranged on the ruler strip along the length direction, a driving gear and a transmission gear which are rotatably arranged in the ruler box and a mechanical counter exposed out of the ruler box, wherein the teeth of the driving gear are matched with the through holes on the ruler strip, the transmission gear is respectively in transmission connection with the driving gear and the mechanical counter, the ruler strip is pulled, the ruler strip drives the driving gear to rotate, the driving gear drives the mechanical counter through the transmission gear, and the mechanical counter displays the digital extension length of the ruler strip;

the marking mechanism is used for marking a measuring terminal and comprises a shell, an ink storage container, a pressurizer and a spray head, wherein the shell is arranged at an inlet and an outlet of a ruler strip, a cavity is arranged at the upper part of the shell, a ruler strip inlet and outlet channel is arranged at the middle part of the shell, a slide block is arranged at the lower part of the shell, an elastic piece is arranged on the slide block, the ink storage container is used for storing ink, the ink storage container is arranged in the cavity of the shell, the ink storage container is in a leather bag type, an ink injection port and an ink outlet are arranged on the ink storage container, a sealing plug is arranged on the ink injection port, the pressurizer is arranged in the cavity of the shell and comprises a pressurizing pipe, one end of the pressurizing pipe is provided with a liquid inlet and a liquid outlet, a liquid inlet check valve is arranged on the liquid inlet and is communicated with the ink outlet of the ink storage container, a liquid outlet check valve is arranged on the liquid outlet and is communicated with the spray head, a piston is arranged in the pressurizing pipe, a pressure rod extending out of the shell is arranged on the piston, and a reset spring is arranged on the pressure rod, the liquid spraying head is arranged on the sliding block, the liquid spraying head stretches along with the sliding of the sliding block, when the ruler strip is pulled out, the sliding block slides outwards under the action of the elastic piece, the liquid spraying head extends out of the shell along with the sliding block, the pressing rod is pressed, ink sprayed out by the liquid spraying head marks on the measuring terminal, when the ruler strip is completely retracted, the sliding block slides inwards under the pushing of the ruler hook, and the liquid spraying head retracts into the shell along with the sliding block;

the speed control mechanism is arranged in the ruler box and used for enabling the clockwork to slowly and uniformly release energy, the speed control mechanism comprises a ratchet wheel, an equal-arm lever, a torsion spring and a retaining post, the ratchet wheel is sleeved on the middle shaft in a penetrating way and connected to the tape winding wheel through a connecting plate, the ratchet wheel rotates along with the tape winding wheel, the direction of the ratchet on the ratchet wheel is opposite to the direction of the tape winding wheel when the tape is drawn outwards, the equal-arm lever is connected to the ruler box through a fulcrum shaft and can rotate on the fulcrum shaft, two ends of the equal-arm lever are respectively provided with a claw hook, the two claw hooks are alternately blocked with the ratchet on the ratchet wheel in a one-way manner, the torsion spring is formed by spirally winding a thin steel wire, the torsion spring is sleeved on the fulcrum shaft, one end of the torsion spring is fixed on the fulcrum shaft, and the other end of the torsion spring is fixed on the equal-arm lever; the two stop posts are fixed on the ruler box and limit the swing amplitude of the equal-arm lever; when the ruler strip is pulled outwards, the ruler strip moves the ruler rolling wheel to rotate, the ruler rolling wheel drives the clockwork spring to generate elastic deformation, the clockwork spring stores energy, meanwhile, the ruler rolling wheel also drives the ratchet wheel to rotate, and because the steering direction of the ratchet wheel is opposite to the direction of the ratchet teeth, the claw hook on the equal-arm lever is not blocked by the ratchet teeth on the ratchet wheel, and the equal-arm lever does not influence the pulling-out of the ruler strip; when the ruler strip is loosened, the spring releases energy, the spring strip drives the ruler strip wheel to rotate, the ruler strip wheel drives the ruler strip to retract, meanwhile, the ruler strip wheel also drives the ratchet wheel to rotate, the ratchets on the ratchet wheel are matched with the claws on the equal-arm lever to drive the equal-arm lever to rotate, the equal-arm lever drives the torsion spring to generate elastic deformation, the torsion spring which generates elastic deformation drives the equal-arm lever to rotate back and forth, the equal-arm lever swings back and forth in a circulating mode, the two claws alternately abut against the ratchets of the ratchet wheel, the swing frequency of the equal-arm lever is fixed, the ratchet wheel rotates uniformly, the ratchet wheel restricts the ruler strip wheel to rotate uniformly, the spring slowly and uniformly releases energy, and the ruler strip retracts slowly and uniformly.

Furthermore, the counting mechanism also comprises a supporting block, the supporting block is arranged at the bottom in the ruler box, and a groove matched with the teeth of the driving gear is arranged at the position, opposite to the driving gear, on the supporting block.

Further, the outer wall of the ruler box is provided with a bubble level meter.

Further, the ruler box is made of ABS novel plastic.

Furthermore, the ruler box is provided with a buckle which can hang and buckle the steel measuring tape on the waistband.

Furthermore, a lifting rope is arranged on the ruler box.

The invention has the beneficial effects that: the counting mechanism is arranged, so that a measurement result can be directly read from the counter, the reading is accurate, and the misreading can be avoided; the marking mechanism is arranged, so that measuring points can be conveniently, accurately and clearly marked; the speed control mechanism is arranged, so that the speed of the spring for releasing energy can be effectively controlled, the retraction speed of the ruler strip can be slowed down, fingers are protected from being scratched, and the internal structure of the steel tape is prevented from being damaged; the leveller is arranged, so that levelness can be measured, and the working efficiency is improved; be equipped with the buckle and carry the rope, conveniently carry and use, prevent to lose.

Drawings

Fig. 1 is a schematic diagram of the external structure of the present invention.

FIG. 2 is a longitudinal sectional view of the inner structure of the case of the present invention.

FIG. 3 is another longitudinal sectional view of the inner structure of the tape case of the present invention.

FIG. 4 is a schematic longitudinal sectional view of the marking mechanism of the present invention.

FIG. 5 is a schematic view of another longitudinal section of the marking mechanism of the present invention.

FIG. 6 is a schematic structural diagram of the speed control mechanism of the present invention.

Fig. 7 is a schematic exploded view of the inside of the blade case according to the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, the steel tape for construction engineering comprises a tape box 1, wherein one side edge of the tape box 1 is provided with a tape inlet and a tape outlet and a brake piece 2 for limiting the extension of the tape, a middle shaft 3 is arranged inside the tape box, a tape wheel 4 is sleeved on the middle shaft 3 in a penetrating manner, a spiral spring 5 is arranged in a central cavity of the tape wheel 4, a tape 6 is wound on the periphery of the tape wheel 4, the tape 6 extends out of the tape box 1 from the inlet and the outlet, and a hook 7 is arranged at the free end of the tape 6, and the steel tape is characterized in that: the steel tape further comprises a counting mechanism 100, a marking mechanism 200 and a speed control mechanism 300;

referring to fig. 1, 2, 3 and 7, the counting mechanism 100 is used for displaying the number of the extending length of the ruler strip, the counting mechanism 100 comprises through holes 110 uniformly arranged on the ruler strip along the length direction, a driving gear 120 and a transmission gear 130 rotatably arranged in the ruler box, and a mechanical counter 140 exposed out of the ruler box, wherein the teeth of the driving gear 120 are matched with the through holes 110 on the ruler strip 6, the transmission gear 130 is respectively in transmission connection with the driving gear 120 and the mechanical counter 140, the ruler strip 6 is pulled, the ruler strip 6 drives the driving gear 120 to rotate, the driving gear 120 drives the mechanical counter 140 through the transmission gear 130, and the mechanical counter 140 displays the number of the extending length of the ruler strip;

referring to fig. 1, 4 and 5, the marking mechanism 200 is used for marking a measuring terminal, the marking mechanism 200 includes a housing 210, an ink storage container 220, a pressurizer 230 and a nozzle 240, the housing 210 is disposed at an entrance and an exit of a ruler, a cavity 211 is disposed at an upper portion of the housing 210, a ruler access channel 212 is disposed at a middle portion of the housing 210, a slider 213 is disposed at a lower portion of the housing 210, an elastic member 214 is disposed on the slider 213, the ink storage container 220 is used for storing ink, the ink storage container 220 is disposed in the cavity 211 of the housing, the ink storage container 220 is of a leather bag type, an ink filling port 221 and an ink outlet port 222 are disposed on the ink storage container 220, a sealing plug 223 is disposed on the ink filling port 221, the pressurizer 230 is disposed in the cavity 211 of the housing, the pressurizer 230 includes a pressurizing pipe 231, a liquid inlet and a liquid outlet are disposed at one end of the pressurizing pipe 231, a liquid inlet check valve 232 is disposed on the liquid inlet and is communicated with the ink outlet port 222 of the ink storage container 220, a liquid outlet check valve 233 is arranged on the liquid outlet hole and communicated with the spraying nozzle 240, a piston 234 is arranged in the pressurizing pipe 231, a pressing rod 235 extending out of the shell is arranged on the piston 234, a return spring 236 is arranged on the pressing rod 235, the spraying nozzle 240 is arranged on the sliding block 213, the spraying nozzle 240 stretches along with the sliding of the sliding block 213, when the ruler strip 6 is pulled out, the sliding block 213 slides outwards under the action of the elastic part 214, the spraying nozzle 240 extends out of the shell 210 along with the sliding block 213, the pressing rod 235 is pressed, ink sprayed out by the spraying nozzle 240 marks at the measuring terminal, when the ruler strip 6 is completely retracted, the sliding block 213 slides inwards under the push of the ruler hook 7, and the spraying nozzle 240 retracts back into the shell 210 along with the sliding block 213;

referring to fig. 3, 6 and 7, the speed control mechanism 300 is arranged in the ruler box 1, the speed control mechanism 300 is used for enabling the clockwork spring 5 to slowly and uniformly release energy, the speed control mechanism 300 comprises a ratchet wheel 310, an equal arm lever 320, a torsion spring 330, a stop column 340, the ratchet wheel 310 is sleeved on the middle shaft 3 and connected with the tape reel 4 through the connecting plate 311, so that the ratchet wheel 310 rotates along with the rotation of the tape reel 4, the direction of the ratchet teeth 312 on the ratchet wheel 310 is opposite to the direction of the rotation of the tape reel 4 when the tape is drawn outwards, the equal arm lever 320 is connected on the ruler box 1 through a fulcrum 321, the equal arm lever 320 can rotate on the fulcrum 321, two ends of the equal arm lever 320 are respectively provided with a claw hook 322, two claw hooks 322 are alternatively blocked with the ratchet 312 on the ratchet 310 in a one-way, the torsion spring 330 is formed by spirally winding a thin steel wire, the torsion spring 330 is sleeved on the fulcrum 321 in a penetrating way, one end of the torsion spring 330 is fixed on the fulcrum 321, and the other end of the torsion spring 330 is fixed on the equal-arm lever 320; the number of the stop posts 340 is two, the two stop posts 340 are fixed on the ruler box 1, and the two stop posts 340 limit the swing amplitude of the equal-arm lever 320; when the ruler strip 6 is pulled outwards, the ruler strip 6 drives the ruler rolling wheel 4 to rotate, the ruler rolling wheel 4 drives the clockwork spring 5 to generate elastic deformation, the clockwork spring 5 stores energy, meanwhile, the ruler rolling wheel 4 also drives the ratchet wheel 310 to rotate, as the direction of the ratchet wheel 310 is opposite to the direction of the ratchet 312, the claw hook 322 on the equal-arm lever 320 is not blocked with the ratchet 312 on the ratchet wheel 310, and the equal-arm lever 320 does not influence the drawing-out of the ruler strip 6; when the ruler strip 6 is loosened, the spring 5 releases energy, the spring 5 drives the ruler winding wheel 4 to rotate, the ruler winding wheel 4 drives the ruler strip 6 to retract, meanwhile, the ruler winding wheel 4 also drives the ratchet wheel 310 to rotate, the ratchet 312 on the ratchet wheel 310 is matched with the claw hook 322 on the equal-arm lever 320 to drive the equal-arm lever 320 to rotate, the equal-arm lever 320 drives the torsion spring 330 to generate elastic deformation, the torsion spring 330 which generates elastic deformation drives the equal-arm lever 320 to rotate back and forth, the equal-arm lever 320 swings back and forth in a circulating mode, the two claw hooks 322 are alternatively abutted against the ratchet 312 of the ratchet wheel 310, the swing frequency of the equal-arm lever 320 is fixed, therefore, the ratchet wheel 310 rotates uniformly, the ratchet wheel 310 restricts the ruler winding wheel 4 to rotate uniformly, the spring 5 releases energy slowly and uniformly, and the ruler strip 6 retracts slowly and uniformly.

Referring to fig. 2 and 3, the counting mechanism 100 further comprises a support block 150, the support block 150 is disposed at the bottom of the ruler box, and a groove 151 matched with the teeth of the driving gear is disposed on the support block 150 opposite to the driving gear 120.

Referring to fig. 1, the bubble level gauge 8 is arranged on the outer wall of the ruler box.

The ruler box 1 is made of ABS novel plastic.

The ruler box 1 is provided with a buckle (not shown) which can be used for hanging and buckling the steel measuring tape on a waistband.

Referring to fig. 1, the ruler box 1 is provided with a lifting rope 9.