阅读说明：本技术 一种林业规划用定点放线规划尺 (Forestry planning is with fixed point unwrapping wire planning chi ) 是由 石惟天 金勇� 鲁亚非 秦光霞 许韶源 韩璐 赵永刚 刘腾宇 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种林业规划用定点放线规划尺,包括外壳和辅助标记机构,所述外壳内安装有刻度尺带,且刻度尺带内开有开口,所述外壳外侧安装有用于刻度尺带限位的自锁机构,用于规划定点进行标记的所述辅助标记机构安装于外壳外侧对应刻度尺带出口处,本发明通过设计的辅助标记机构及自锁机构的相互配合,从而使得人员在找到规划指定点后,通过自锁机构的卡死,能够同步带动辅助标记机构进行标记划线,从而划线更加方便,也使得标记更加精准。(The invention discloses a fixed-point pay-off planning ruler for forestry planning, which comprises a shell and an auxiliary marking mechanism, wherein a graduated scale belt is arranged in the shell, an opening is formed in the graduated scale belt, a self-locking mechanism for limiting the graduated scale belt is arranged on the outer side of the shell, and the auxiliary marking mechanism for planning fixed-point marking is arranged on the outer side of the shell and corresponds to an outlet of the graduated scale belt.)

1. The utility model provides a forestry planning is with fixed point unwrapping wire planning chi which characterized in that includes:

the scale belt limiting device comprises a shell (1), wherein a scale belt (2) is installed in the shell (1), an opening is formed in the scale belt (2), and a self-locking mechanism (3) used for limiting the scale belt (2) is installed on the outer side of the shell (1);

and the auxiliary marking mechanism (4) is used for planning fixed-point marking, and the auxiliary marking mechanism (4) is arranged at the outlet of the outer side of the shell (1) corresponding to the graduated scale belt (2).

2. The fixed point line laying planning ruler for forestry planning of claim 1, wherein: the auxiliary marking mechanism (4) comprises a Z-shaped mounting plate (5) fixed at the position of the outer side of the shell (1) corresponding to the outlet of the scale belt (2), an adjusting opening (6) matched with the self-locking mechanism (3) is formed in one end, close to the shell (1), of the Z-shaped mounting plate (5), a U-shaped frame (7) is fixed at the bottom of the adjusting opening (6) corresponding to the Z-shaped mounting plate (5), guide columns (8) are fixed at two ends in the U-shaped frame (7), a connecting plate (9) is sleeved outside the guide columns (8), return springs (10) abutting against the connecting plate (9) and the bottom of the U-shaped frame (7) are sleeved outside the two guide columns (8), a trapezoidal plate (11) is fixed on one side of the connecting plate (9), a sliding opening (12) is formed in the bottom of the trapezoidal plate (11), adjusting rods (13) are inserted at two ends of the sliding opening (12), and a clamping piece (14) is fixed at the outer end of the adjusting rods (13), trapezoidal plate (11) surface mounting has mark subassembly (15), detection piece (16) with scale belt (2) looks adaptation are installed to Z type mounting panel (5) outer end.

3. The fixed point line laying planning ruler for forestry planning of claim 2, wherein: the clamping piece (14) comprises a clamping piece (14) and two clamping plates (17), wherein a moving opening (18) is formed in each of the two clamping plates (17), the inclined plane end of the Z-shaped mounting plate (5) is provided with two inclined openings (19) used for adjusting the movement of the rod (13), the outer end of the rod (13) penetrates through the inclined openings (19) in a sliding manner and is inserted into the moving opening (18), two moving columns (20) are fixed in the clamping plates (17), the tops of the moving columns (20) are fixed with mounting plates (21) fixed to the inner sides of the clamping plates (17), clamping sleeves (22) are sleeved on the outer sides of the moving columns (20) in a sliding manner, extrusion springs (23) abutting against the clamping plates (17) and the clamping sleeves (22) are sleeved on the outer sides of the bottoms of the two moving columns (20), guide blocks (24) are fixed to the bottoms of the two clamping plates (17), and a moving groove (25) connected with the guide blocks (24) in a sliding manner is formed in the surface of the Z-shaped mounting plate (5), and the Z-shaped mounting plate (5) is internally provided with a socket (26) corresponding to the two clamping sleeves (22).

4. The fixed point line laying planning ruler for forestry planning of claim 2, wherein: detect piece (16) including fixing two curb plates (27) in Z type mounting panel (5) outer end, two be equipped with rectangle spirit level (28) between curb plate (27), and rectangle spirit level (28) both ends rotate with two curb plates (27) respectively through the pivot and be connected, rectangle spirit level (28) both ends all are fixed with L template (29), and spliced pole (30) are installed to two L template (29) internal rotations.

5. The fixed point line laying planning ruler for forestry planning of claim 2, wherein: the marking assembly (15) comprises a marking arm (31), a marking groove (32) used for the marking arm (31) to move is formed in the trapezoidal plate (11), a limiting groove (33) matched with the inclined surface of the trapezoidal plate (11) is formed in the inner walls of two sides of the marking groove (32), an adjusting plate (34) is fixed to one end of the marking arm (31), a limiting column (35) matched with the limiting groove (33) is fixed to the bottom end of the adjusting plate (34), a marking opening (36) used for the adjusting plate (34) to move is formed in the surface of the Z-shaped mounting plate (5), a guide groove (37) is formed in the inner walls of two sides of the marking opening (36), the top of the adjusting plate (34) is slidably inserted into the marking opening (36), a guide column (38) is fixed to the top end of the adjusting plate (34), an inlet groove (39) communicated with the guide groove (37) is formed in the inner wall of two sides of the marking opening (36), and a marking pen (40) is rotatably arranged at the bottom of the marking arm (31).

6. The site pay-off planning ruler for forestry planning of claim 5, wherein: the self-locking mechanism (3) comprises a self-locking block (41) which is inserted in a sliding mode and arranged on the outer side of the shell (1), a chute (42) is formed in the outer side of the self-locking block (41), a self-locking column (43) is inserted in the chute (42) in a sliding mode, a supporting plate (44) is fixed to the outer end of the self-locking column (43), and a pushing plate (45) matched with the supporting plate (44) is fixed to the top of the adjusting plate (34).

7. The fixed point line laying planning ruler for forestry planning of claim 6, wherein: the inclination of the inclined groove (42) is consistent with that of the inclined surface of the trapezoidal plate (11).

8. The fixed point line laying planning ruler for forestry planning of claim 1, wherein: and a guide opening frame (46) is fixed on the outer side of the shell (1) corresponding to the outlet of the scale belt (2).

9. The set point line laying planning ruler for forestry planning of claim 3, wherein: the inner side of the clamping sleeve (22) is of a semicircular structure, and the bottoms of the two clamping plates (17) are provided with arc openings matched with the clamping sleeve.

Technical Field

The invention relates to the technical field of fixed-point paying-off tools, in particular to a fixed-point paying-off planning ruler for forestry planning.

Background

The forestry ecological engineering planning design aims to establish an effective ecological barrier by matching forestry measures with other bioengineering measures, optimize a land utilization form, adjust an industrial structure and an economic structure, solve the problems of reasonable land utilization and water and soil loss in the area or the watershed and promote the comprehensive development of agriculture, forestry and animal husbandry.

At present, when forestry planning is carried out, a plurality of equipment tools are needed to be matched for use, wherein when the area is subjected to pay-off measurement, a person is required to hold a measuring tape by hand, the measuring distance is pulled open, when a specified distance point is found, the person records the point in a marking mode, so that the fixed point is planned, however, due to the fact that the part of the area and the ground are uneven, when the person uses the measuring tape to measure, the measuring tape is attached to the ground, the measurement is easy to be inaccurate, meanwhile, after the person finds the specified point, when marking is carried out, the other hand needs to be used for positioning by means of a marking pen or inserting a positioning nail, the whole operation is troublesome, meanwhile, when marking and inserting the nail, due to the fact that the single-hand operation is carried out, the marking is easy to be askew, the phenomenon that the inserting nail is easy to be misaligned with a scale line on the measuring tape occurs, so that the fixed point has errors, and the later planning measurement is influenced, therefore, a fixed-point paying-off planning ruler for forestry planning is provided.

Disclosure of Invention

The invention aims to provide a fixed-point pay-off planning ruler for forestry planning, which can automatically mark and improve the marking accuracy during fixed-point pay-off so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a forestry planning is with fixed point unwrapping wire planning chi, includes shell and supplementary mark mechanism, install the scale area in the shell, and the interior division of scale area has the opening, install in the shell outside and be used for the spacing self-locking mechanism in scale area for the planning fixed point is carried out the mark supplementary mark mechanism is installed and is corresponded scale area exit in the shell outside.

Preferably, the auxiliary marking mechanism comprises a Z-shaped mounting plate fixed at the position, corresponding to the position of the scale belt, of the outer side of the shell, the Z-shaped mounting plate is close to one end of the shell and provided with an adjusting opening matched with the self-locking mechanism, a U-shaped frame is fixed at the bottom of the adjusting opening corresponding to the Z-shaped mounting plate, guide pillars are fixed at two ends of the U-shaped frame, a connecting plate is sleeved at the outer side of each guide pillar, a reset spring which is abutted against the bottom of the connecting plate and the bottom of the U-shaped frame is sleeved on each guide pillar, a trapezoidal plate is fixed on one side of the connecting plate, a sliding opening is formed in the bottom of the trapezoidal plate, adjusting rods are inserted into two ends of each sliding opening, a clamping piece is fixed at the outer end of each adjusting rod, a marking assembly is mounted on the surface of the trapezoidal plate, a detection piece matched with the scale belt is mounted at the outer end of the Z-shaped mounting plate, and the marks are realized through the auxiliary marking mechanism.

Preferably, the clamping piece comprises two clamping plates, moving openings are formed in the two clamping plates, and the inclined plane end of the Z-shaped mounting plate is provided with two inclined openings for moving the adjusting rod, the outer end of the adjusting rod penetrates through the inclined openings in a sliding manner, and is inserted into the moving port, two moving columns are fixed in the clamping plate, a mounting plate fixed with the inner side of the clamping plate is fixed at the top of each moving column, a clamping sleeve is sleeved on the outer side of each moving column in a sliding manner, and the outer sides of the bottoms of the two moving columns are sleeved with extrusion springs which are propped against the clamping plates and the clamping sleeves, the bottoms of the two clamping plates are both fixed with guide blocks, and Z type mounting panel surface is opened there is the shifting chute with guide block sliding connection, it has the socket to open corresponding two centre gripping cover positions department in the Z type mounting panel, realizes the supplementary centre gripping to the location nail through the holder, and the personnel of being convenient for are nailed into it.

Preferably, the detection piece is including fixing two curb plates in Z type mounting panel outer end, two be equipped with the rectangle spirit level between the curb plate, and the rectangle spirit level both ends rotate with two curb plates respectively through the pivot and be connected, the rectangle spirit level both ends all are fixed with the L template, and two L template internal rotations install the spliced pole, realize whether being in the horizontality to scale area both ends point through the detection piece and detect.

Preferably, the mark subassembly includes the mark arm, it has the mark groove that is used for the mark arm to remove to open in the trapezoidal plate, and mark groove both sides inner wall open have with the spacing groove of trapezoidal plate inclined plane looks adaptation, the mark arm is located mark groove one end and is fixed with the regulating plate, and the regulating plate bottom mounting have with the spacing post of spacing groove looks adaptation, Z type mounting panel surface is opened has the mark mouth that is used for the regulating plate to remove, and mark mouth both sides inner wall open has the guide groove, regulating plate top slip grafting and mark intraorally, and the regulating plate top is fixed with the guide post, mark mouth both sides inner wall end department opens has the import groove that is linked together with the guide groove, the mark pen is installed in the rotation of mark arm bottom, realizes automatic reference numeral through the mark subassembly, improves the accuracy of reference numeral.

Preferably, the self-locking mechanism comprises a self-locking block which is inserted in a sliding mode and is arranged on the outer side of the shell, a chute is formed in the outer side of the self-locking block, a self-locking column is inserted in the chute in a sliding mode, a supporting plate is fixed to the outer end of the self-locking column, a pushing plate matched with the supporting plate is fixed to the top of the adjusting plate, and the self-locking mechanism can achieve self-locking of the scale belt and can assist in inserting of the positioning nail and aligning of the mark.

Preferably, the inclination of chute is unanimous with the inclination of trapezoidal board inclined plane for personnel can drive the pushing board removal in step when removing the board, realize the mark.

Preferably, a guide opening frame is fixed at the position, corresponding to the position of the outlet of the graduated scale belt, of the outer side of the shell, and the graduated scale belt is pulled out more smoothly due to the guide opening frame.

Preferably, the inner sides of the clamping sleeves are of semicircular structures, and the bottoms of the two clamping plates are provided with arc openings matched with the clamping sleeves, so that the positioning nails can be conveniently inserted.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the mutual matching of the designed auxiliary marking mechanism and the self-locking mechanism, after a person finds a planned appointed point, the auxiliary marking mechanism can be synchronously driven to mark and mark through the blocking of the self-locking mechanism, so that the marking is more convenient, and the marking is more accurate.

2. According to the invention, the graduated scale belt can be horizontally detected through the detection piece in the auxiliary marking mechanism, so that the conditions that the graduated scale belt between two specified points is inclined and the like are avoided, and the measurement is not accurate.

3. The clamping pieces in the auxiliary marking mechanism can be tightly attached to each other along with the locking of the self-locking mechanism, so that the positioning nail can be conveniently and accurately inserted.

Drawings

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

FIG. 2 is another perspective view of the present invention;

FIG. 3 is a schematic view of the auxiliary marking mechanism of the present invention;

FIG. 4 is a schematic view of a partial cross-sectional structure of an auxiliary marking mechanism according to the present invention;

FIG. 5 is a schematic view of a clip according to the present invention;

FIG. 6 is a schematic view of the structure of the detecting member of the present invention;

FIG. 7 is a schematic structural view of the relationship between the connecting plate and the adjusting opening;

FIG. 8 is a schematic view of a marking assembly according to the present invention;

FIG. 9 is an enlarged view taken at A in FIG. 8;

FIG. 10 is a schematic view of the relationship between the position-limiting post and the position-limiting groove according to the present invention;

fig. 11 is a schematic structural view of the self-locking mechanism of the present invention.

In the figure: 1-a housing; 2-a graduated tape; 3-a self-locking mechanism; 4-an auxiliary marking mechanism; a 5-Z-shaped mounting plate; 6-adjusting the port; 7-U-shaped frame; 8-guide column; 9-a connecting plate; 10-a return spring; 11-trapezoidal plate; 12-a sliding port; 13-adjusting the rod; 14-a clamp; 15-a marker component; 16-a detection member; 17-a clamping plate; 18-a mobile port; 19-bevel connection; 20-moving the column; 21-mounting a plate; 22-a clamping sleeve; 23-a compression spring; 24-a guide block; 25-a moving slot; 26-a socket; 27-side plate; 28-rectangular level; 29-L type plate; 30-connecting column; 31-a marker arm; 32-a marker slot; 33-a limiting groove; 34-an adjusting plate; 35-a limiting column; 36-mark port; 37-a guide groove; 38-a guide post; 39-inlet tank; 40-a marker pen; 41-self-locking block; 42-chute; 43-self-locking post; 44-a resisting plate; 45-pushing plate; 46-leading port frame.

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.

Example 1

Referring to fig. 1-4 and 7-11, a fixed point pay-off planning ruler for forestry planning in the figures includes a housing 1 and an auxiliary marking mechanism 4, a scale tape 2 is installed in the housing 1, an opening is formed in the scale tape 2, a self-locking mechanism 3 for limiting the scale tape 2 is installed on the outer side of the housing 1, the auxiliary marking mechanism 4 for planning fixed point marking is installed on the outer side of the housing 1 corresponding to an outlet of the scale tape 2, wherein a guide opening frame 46 is fixed on the outer side of the housing 1 corresponding to the outlet of the scale tape 2 in order to make the drawing-out of the scale tape 2 smoother.

Wherein the auxiliary marking mechanism 4 comprises a Z-shaped mounting plate 5 which is fixed at the outer side of the shell 1 and corresponds to the outlet of the graduated scale belt 2, one end of the Z-shaped mounting plate 5 close to the shell 1 is provided with an adjusting port 6 matched with the self-locking mechanism 3, a U-shaped frame 7 is fixed at the bottom of the Z-shaped mounting plate 5 corresponding to the adjusting opening 6, guide posts 8 are fixed at both ends in the U-shaped frame 7, and the outer sides of the guide posts 8 are sleeved with connecting plates 9, the outer sides of the two guide posts 8 are sleeved with return springs 10 which are abutted against the connecting plates 9 and the bottoms of the U-shaped frames 7, one side of each connecting plate 9 is fixed with a trapezoidal plate 11, the bottom of the trapezoidal plate 11 is provided with a sliding port 12, two ends of the sliding port 12 are inserted with adjusting rods 13, a clamping piece 14 is fixed at the outer end of the adjusting rod 13, a marking assembly 15 is arranged on the surface of the trapezoidal plate 11, and a detecting piece 16 matched with the scale belt 2 is arranged at the outer end of the Z-shaped mounting plate 5;

the marking assembly 15 comprises a marking arm 31, a marking groove 32 used for the marking arm 31 to move is formed in the trapezoidal plate 11, limit grooves 33 matched with inclined surfaces of the trapezoidal plate 11 are formed in inner walls of two sides of the marking groove 32, an adjusting plate 34 is fixed to one end, located on the marking groove 32, of the marking arm 31, a limit column 35 matched with the limit groove 33 is fixed to the bottom end of the adjusting plate 34, a marking opening 36 used for the adjusting plate 34 to move is formed in the surface of the Z-shaped mounting plate 5, guide grooves 37 are formed in inner walls of two sides of the marking opening 36, the top of the adjusting plate 34 is inserted into the marking opening 36 in a sliding mode, a guide column 38 is fixed to the top end of the adjusting plate 34, inlet grooves 39 communicated with the guide grooves 37 are formed in end heads of inner walls of two sides of the marking opening 36, and a marking pen 40 is rotatably installed at the bottom of the marking arm 31;

in addition, self-locking mechanism 3 includes the self-locking piece 41 of slip grafting and shell 1 outside, open the self-locking piece 41 outside has chute 42, and the chute 42 slides in and pegs graft and have self-locking post 43, self-locking post 43 outer end is fixed with supports 44, and the regulating plate 34 top is fixed with the slurcam 45 with supporting 44 looks adaptation, simultaneously, in order to make to support 44 to remove can more effectual drive slurcam 45's removal, the inclination of design chute 42 is unanimous with the inclination of trapezoidal plate 11 inclined plane.

When a distance is measured between two planned fixes, or when the measured distance finds a specified planned fix: firstly, a person inserts a positioning nail into the bottom surface, then draws out the scale belt 2, so that an opening in the scale belt 2 is sleeved outside the positioning nail, then draws out the scale belt 2 to a proper distance or moves to the next positioning point, at the moment, the person moves the shell 1 first, so that the scale belt 2 is in a horizontal state when being detected by the detection piece 16, then keeps the height of the shell 1, so that the scale belt 2 is in the horizontal state, then, the person pushes the self-locking block 41, so that the self-locking block 41 clamps the scale belt 2 to be in a downward movement at the self-locking block 41, simultaneously extrudes the connecting plate 9 in the adjusting port 6, drives the connecting plate 9 to move downward, so that the trapezoidal plate 11 moves downward, drives the adjusting plate 34 to move downward, so that the guide pillar 38 at the top end of the adjusting plate 34 enters the guide groove 37 through the inlet groove 39, and the supporting plate 44 is matched with the pushing plate 45, at the moment, a person pushes the abutting plate 44 to drive the pushing plate 45 to move horizontally, so that the trapezoidal plate 11 continues to move downwards, the marking pen 40 firstly moves downwards to be in contact with the ground, then the ground is marked along with the horizontal movement of the marking arm 31, the whole marking action is carried out along with the self-locking action, the person does not need to draw by hand with the help of the marking pen, the marking is more accurate and stable, the operation is more convenient and simpler, and meanwhile, the precision is improved;

in this scheme, because marker 40 can be dismantled through rotating the installation to make marker 40 when finishing using, can follow and trade, can follow simultaneously and trade different marker 40 and use different environment and mark.

Example 2

Referring to fig. 5, in this embodiment, as further described in embodiment 1, the auxiliary marking mechanism 4 in the figure includes a Z-shaped mounting plate 5 fixed at an outlet of the housing 1 corresponding to the scale tape 2, an adjusting opening 6 adapted to the self-locking mechanism 3 is formed at one end of the Z-shaped mounting plate 5 close to the housing 1, a U-shaped frame 7 is fixed at the bottom of the adjusting opening 6 corresponding to the Z-shaped mounting plate 5, guide pillars 8 are fixed at both ends of the U-shaped frame 7, a connecting plate 9 is sleeved outside the guide pillars 8, return springs 10 abutting against the connecting plate 9 and the bottom of the U-shaped frame 7 are sleeved outside the two guide pillars 8, a trapezoidal plate 11 is fixed at one side of the connecting plate 9, a sliding opening 12 is formed at the bottom of the trapezoidal plate 11, adjusting rods 13 are inserted at both ends of the sliding opening 12, a clamping member 14 is fixed at the outer end of the adjusting rod 13, a marking assembly 15 is installed on the surface of the trapezoidal plate 11, the outer end of the Z-shaped mounting plate 5 is provided with a detection piece 16 matched with the scale belt 2;

wherein the clamping member 14 comprises two clamping plates 17, two moving openings 18 are formed in the two clamping plates 17, two inclined openings 19 for moving the adjusting rod 13 are formed in the inclined surface end of the Z-shaped mounting plate 5, the outer end of the adjusting rod 13 slidably penetrates through the inclined openings 19 and is inserted into the moving openings 18, two moving columns 20 are fixed in the clamping plates 17, mounting plates 21 fixed to the inner sides of the clamping plates 17 are fixed to the tops of the moving columns 20, clamping sleeves 22 are slidably sleeved on the outer sides of the two moving columns 20, extrusion springs 23 abutting against the clamping plates 17 and the clamping sleeves 22 are sleeved on the outer sides of the bottoms of the two moving columns 20, guide blocks 24 are fixed to the bottoms of the two clamping plates 17, moving grooves 25 slidably connected with the guide blocks 24 are formed in the surface of the Z-shaped mounting plate 5, inserting holes 26 are formed in the positions of the Z-shaped mounting plate 5 corresponding to the two clamping sleeves 22, and in addition, in order to facilitate the insertion of the positioning nail, the inner side of the clamping sleeve 22 is designed to be of a semicircular structure, and the bottoms of the two clamping plates 17 are provided with arc openings matched with the clamping sleeves.

In this embodiment, after the housing 1 moves to the designated position, a person presses the self-locking mechanism 3 to cause the scale tape 2 to be locked, while the self-locking mechanism 3 moves downward, the connecting plate 9 and the trapezoidal plate 11 are driven to move downward, the two adjusting rods 13 are driven to move along the bevel opening 19 and the moving opening 18, so as to move the clamping plates 17 inward, so that the two clamping sleeves 22 are fastened, at this time, the person inserts a positioning nail, the positioning nail is limited by the two clamping sleeves 22, then the nail end is knocked by means of tools such as a hammer head, while the nail is inserted, the clamping sleeves 22 are driven to move downward, so that the bottom of the nail penetrates through the socket 26 and the opening on the scale tape 2, the insertion ground positions the designated position, then, the person loosens the self-locking mechanism 3, and the connecting plate 9 moves upward and the two clamping plates 17 move outward through the mutual matching of the return spring 10 and the extrusion spring 23, thereby personnel are lifting up the separation from of scale area 2 realization and location nail this moment, through self-locking mechanism 3's removal to the insertion of assistance-localization real-time nail, it is more convenient to make the location, uses more in a flexible way.

Example 3

Referring to fig. 6, in this embodiment, for further explanation of other embodiments, the auxiliary marking mechanism 4 in the figure includes a Z-shaped mounting plate 5 fixed at an outlet of the housing 1 corresponding to the scale tape 2, an adjusting opening 6 adapted to the self-locking mechanism 3 is formed at one end of the Z-shaped mounting plate 5 close to the housing 1, a U-shaped frame 7 is fixed at the bottom of the adjusting opening 6 corresponding to the Z-shaped mounting plate 5, guide pillars 8 are fixed at both ends of the U-shaped frame 7, a connecting plate 9 is sleeved outside the guide pillars 8, return springs 10 abutting against the connecting plate 9 and the bottom of the U-shaped frame 7 are sleeved outside the two guide pillars 8, a trapezoidal plate 11 is fixed at one side of the connecting plate 9, a sliding opening 12 is formed at the bottom of the trapezoidal plate 11, adjusting rods 13 are inserted at both ends of the sliding opening 12, a clamping member 14 is fixed at the outer end of the adjusting rod 13, a marking assembly 15 is installed on the surface of the trapezoidal plate 11, and the outer end of the Z-shaped mounting plate 5 is provided with a detection piece 16 matched with the scale belt 2.

Wherein, the detection piece 16 is including fixing two curb plates 27 in Z type mounting panel 5 outer end, two be equipped with rectangle spirit level 28 between the curb plate 27, and rectangle spirit level 28 both ends rotate with two curb plates 27 respectively through the pivot and be connected, rectangle spirit level 28 both ends all are fixed with L template 29, and the spliced pole 30 is installed to two L template 29 internal rotations.

In the embodiment, in order to keep the scale tape 2 horizontal, the designed rectangular level gauge 28 is matched with the connecting column 30 to realize butt joint of the scale tape 2, and when the scale tape 2 inclines, the connecting column 30 can be driven to move, so that the rectangular level gauge 28 inclines, and accurate detection can be realized;

in the principle of the rectangular level gauge 28 for level detection, by observing the position of the bubble in the rectangular level gauge 28, if the bubble is not in the middle position, it can be determined that the scale tape 2 is not level.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.