Two-way plastering trowel stable in installation

Abstract

The utility model discloses a two-way claying knife stable in installation. The two-way claying knife comprises a claying blade. The sliding strip is fixed above the claying blade in the length direction, and a first rack is arranged at the upper end of the sliding strip; the connecting seat is connected above the sliding strip in a sliding manner, and a built-in cavity is formed in the connecting seat; the handle is mounted on one side of the connecting seat; the lifting part is arranged in the built-in cavity, and a second rack is arranged at the lower end of the lifting part; the unlocking piece is installed on the connecting base and has a locking state for driving the lifting piece to descend and enabling the second rack and the first rack to be meshed with each other and an unlocking state for driving the lifting piece to ascend and enabling the second rack to be separated from the first rack upwards. Through meshing of the racks and the design of the sliding strips and the sliding grooves, the position of the connecting base can be fixed in all directions, the structure is very stable after locking, a worker can change the orientation of the claying blade according to the use requirement, operation is convenient, the service life is long, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of construction tools, in particular to a stably installed bidirectional plastering trowel. Background Art

[0002] A plastering trowel is a common construction tool. It primarily consists of a trowel, a handle bracket, and a handle. The handle bracket is welded to the trowel, and the handle is mounted on the handle bracket. Many trowels are equipped with cutting teeth, which help the trowel apply the material more evenly and finely. This is particularly true for laying ceramic tiles and mosaics, where the cutting teeth ensure even distribution of material, improving work efficiency and construction quality.

[0003] To make the same trowel suitable for both left-handed and right-handed workers, eliminating the need to purchase multiple trowels, two-way trowels are now available on the market, allowing workers to adjust the orientation of the blade teeth at any time according to their needs. For example, patent publication CN 210459900U discloses a trowel with a reversible handle. This patent employs an aluminum block fixed to the upper end of the trowel, and the connecting base is designed as two half-shells. To change the orientation of the trowel, the two half-shells are removed from the aluminum block, reversed, and then screwed back together. The half-shells are now clamped to the sides of the aluminum block via locking ribs. However, during use, the above-mentioned clamping method is not stable. Since the trowel needs to continuously apply material laterally, its bearing force is relatively large. After a period of use, the connection between the connecting seat and the connecting aluminum block will loosen. Once loose, the trowel will shake, and the worker will not be able to operate normally. At this time, it is necessary to re-tighten the half shell. After multiple screwing and tightening, the screw connection structure will be structurally damaged, and the frequency of re-tightening will increase, or the worker will simply become unusable, with a short service life, and the tightening process is also relatively cumbersome. In addition, with respect to the above-mentioned trowels, in order to strengthen the connection stability between the connecting seat and the connecting aluminum block, some trowels are equipped with an upper pressure structure. After the connecting seat is clamped and fixed on the connecting aluminum block, the upper pressure structure is used to press the connecting aluminum block. However, since the upper end surface of the connecting aluminum block is flat, the pressing effect is not very ideal and needs to be improved. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a two-way plastering trowel with stable installation.

[0005] The technical solution adopted by the utility model is: a stable bidirectional plastering trowel, comprising:

[0006] Plastering blade, set the extension direction of the plastering blade to the long direction;

[0007] A slide bar is fixed above the plastering blade along the length direction, and the upper end of the slide bar is provided with a first rack arranged along the length direction;

[0008] A connecting base is slidably mounted above the slide bar, wherein a built-in chamber is provided inside the connecting base, and an opening is provided at the lower end of the built-in chamber; a handle is mounted on one side of the connecting base;

[0009] a lifting member disposed in the built-in chamber, wherein a second rack is provided at a lower end of the lifting member along the longitudinal direction, and the lifting member and the opening are located at corresponding upper and lower positions;

[0010] The unlocking member is installed on the connecting seat and has a locking state in which the lifting member is driven to descend and the second rack and the first rack are engaged with each other, and an unlocking state in which the lifting member is driven to ascend and the second rack is upwardly disengaged from the first rack.

[0011] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0012] Preferably, the unlocking member is rotatably mounted on the connecting seat, a driving block is provided on the unlocking member, a through opening is provided on the lifting member, a first abutting end and a second abutting end are provided on the driving block, and in a locked state, the first abutting end abuts against the lower end of the through opening, and in an unlocked state, the first abutting end is detached from the lower end of the through opening, and the second abutting end abuts against the upper end of the through opening.

[0013] Preferably, a first slot hole and a guide slot are provided on one side surface of the connecting seat, the guide slot is arranged around the first slot hole and is connected to the first slot hole, the guide slot is provided with a first positioning block and a second positioning block spaced apart from each other along its own extension path, the unlocking member is provided with a connecting block, the connecting block is provided with a guide block around the connecting block, the connecting block is arranged in the first slot hole, the guide block is arranged in the guide slot, and the guide block is provided with a positioning slot, in the locked state, the first positioning block is clamped in the positioning slot, and in the unlocked state, the second positioning block is clamped in the positioning slot.

[0014] Preferably, a second slot is further provided on the connecting seat, the first slot and the second slot are respectively arranged on the front and rear sides of the built-in chamber, a transfer column is provided on the rear side of the connecting block, the driving block is arranged on the periphery of the transfer column, and the transfer column is rotatably installed in the second slot at one end away from the connecting block.

[0015] Preferably, a second screw hole is provided at the end of the adapter column, and a screw is provided on the rear side of the connecting seat, and the screw rod of the screw is screwed into the second screw hole.

[0016] Preferably, the lower end of the connecting seat is provided with a slide groove arranged along the length direction, the slide bar is slidably connected to the slide groove, the built-in chamber is located above the slide groove, and the built-in chamber is connected to the slide groove.

[0017] Preferably, the front and rear sides of the slide groove are respectively provided with limiting strips, the front and rear sides of the slide strip are respectively provided with limiting grooves, and the limiting strips are slidably connected to the limiting grooves.

[0018] Preferably, a convex ring is provided at one end of the handle, a plug-in hole is provided on one side of the upper end of the connecting seat, a stud is provided in the plug-in hole, a plurality of clamping ribs are provided between the stud and the inner wall of the plug-in hole, a plurality of clamping grooves arranged along the circumference are provided on the convex ring, the convex ring is inserted into the plug-in hole, the stud is located in the ring of the convex ring, the clamping ribs are inserted into the clamping groove, and a long screw for threading the stud is provided on the handle.

[0019] Preferably, a hollow pipe is provided inside the handle, a notch is provided at the tail end of the handle, a through hole is provided between the notch and the hollow pipe, the screw head of the long screw is arranged in the notch, the screw rod of the long screw is arranged in the hollow pipe and the through hole, the tail end of the notch is provided with a tail head for covering the screw head, recesses and protrusions are provided on the outer wall of the handle, an outer shell is sleeved on the outside of the handle, and a clearance opening corresponding to the protrusion is provided on the outer shell.

[0020] More preferably, the first rack is provided with at least one clamping strip arranged along the length direction, and the second rack is provided with at least one wire groove arranged along the length direction, and in the locked state, the clamping strip is clamped in the wire groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When the connecting seat needs to be fixed above the slide bar, it is only necessary to manually rotate the unlocking member to the locking end. At this time, the driving block on the unlocking member follows the unlocking member to rotate, and drives the lifting member located inside the connecting seat to descend through the first abutting end until the second rack at the lower end of the lifting member and the first rack at the upper end of the slide bar engage with each other, thereby achieving the locking of the connecting seat; when the lock needs to be released, it is only necessary to manually rotate the unlocking member to the unlocking end. At this time, the driving member on the unlocking member follows the unlocking member to rotate, and drives the lifting member to rise through the second abutting end. At this time, the second rack disengages from the first rack, thereby achieving the unlocking of the connecting seat. The operation is very convenient. In addition, since the connecting seat is limited and fixed in all directions, the connection between the connecting seat and the slide bar is very stable.

[0023] 2. In both the locked and unlocked states, the unlocking piece is positioned by the positioning groove and the positioning block. Without external force, the unlocking piece will not rotate, thereby ensuring that the connecting seat is stably fixed on the sliding bar;

[0024] 3. In the unlocked state, the direction of the plastering blade can be adjusted. After the adjustment, the position can be re-locked through the unlocking part, so that it can be adapted to the operation of left-handed or right-handed workers according to needs. It is easy to replace, has good structural stability, long service life, and better operating experience for workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is an overall structural diagram of the right side perspective suitable for right-handed users in one embodiment of the present application;

[0027] Figure 2 This is an overall structural diagram from a left perspective suitable for right-handed users in one embodiment of the present application;

[0028] Figure 3 This is an assembly diagram of a plastering blade and a slide bar in one embodiment of the present application;

[0029] Figure 4 This is an overall structural diagram of an embodiment of the present application suitable for left-handed use;

[0030] Figure 5 This is a structural diagram of a connecting socket in one embodiment of the present application;

[0031] Figure 6This is a schematic structural diagram of an unlocking member in an embodiment of the present application;

[0032] Figure 7 This is a structural diagram of a lifting member in one embodiment of the present application;

[0033] Figure 8 This is a schematic structural diagram of an embodiment of the present application after the unlocking member is hidden, and the entire structure is longitudinally cut along the left and right directions;

[0034] Figure 9 This is a front view of an embodiment of the present application in a locked state, after being longitudinally cut along the left and right directions;

[0035] Figure 10 This is a front view of an embodiment of the present application in an unlocked state, after being longitudinally cut along the left and right directions;

[0036] Figure 11 This is a schematic diagram of the structure of the connecting base from a bottom perspective in one embodiment of the present application;

[0037] Figure 12 This is a diagram showing the assembly structure of the connecting base and the handle from the right side after the handle is exploded in one embodiment of the present application;

[0038] Figure 13 This is a diagram of the assembly structure of the connecting base and the handle from the left side after the handle is exploded in one embodiment of the present application;

[0039] Figure 14 This is a structural diagram of a lifting member provided with a wire groove in one embodiment of the present application;

[0040] Figure 15 Schematic diagram of the structure of a slide bar provided with a clamping bar in one embodiment of the present application.

[0041] The markings in the accompanying drawings are: 1- plastering blade, 11-tooth mouth, 2-slide, 21-first rack, 22-limiting groove, 23-card strip, 3-connecting seat, 31-slide, 32-limiting strip, 33-built-in chamber, 331-opening, 34-first slot, 35-guide groove, 351-first positioning block, 352-second positioning block, 36-second slot, 37-first screw hole, 38-plug hole, 39-card rib, 4-handle, 41-handle body, 411-convex ring, 4 12-clamping groove, 413-recess, 414-protrusion, 415-notch, 416-through hole, 417-hollow pipe, 42-outer shell, 421-allowance, 43-tail head, 5-lifting member, 51-through port, 52-second rack, 53-wire slot, 6-unlocking member, 61-connecting block, 62-guide block, 621-positioning groove, 63-adapter column, 631-second screw hole, 64-driving block, 641-first abutting end, 642-second abutting end, 65-screw.

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] Furthermore, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the technical solutions of various embodiments may be combined, but only if they are achievable by persons of ordinary skill in the art. If a combination of technical solutions contradicts or is unachievable, such combination shall be deemed non-existent and outside the scope of protection claimed by this utility model.

[0046] Specific implementation plan: see Figures 1-13 The utility model is a stably installed bidirectional plastering trowel, comprising:

[0047] The plastering blade 1 is set to extend in the longitudinal direction;

[0048] The slide bar 2 is fixed above the plastering blade 1 along the length direction, and the upper end of the slide bar 2 is provided with a first rack 21 arranged along the length direction;

[0049] The connecting base 3 is slidably mounted above the slide bar 2. The connecting base 3 has a built-in chamber 33 therein, and an opening 331 is provided at the lower end of the built-in chamber 33. The handle 4 is mounted on one side of the connecting base 3.

[0050] The lifting member 5 is arranged in the built-in chamber 33. The lower end of the lifting member 5 is provided with a second rack 52 arranged along the length direction. The upper and lower positions of the lifting member 5 and the opening 331 correspond to each other.

[0051] The unlocking member 6 is installed on the connecting seat 3 and has a locking state in which the lifting member 5 is driven to descend and the second rack 52 and the first rack 21 are engaged with each other, and an unlocking state in which the lifting member 5 is driven to ascend and the second rack 52 is upwardly disengaged from the first rack 21.

[0052] See also Figure 1-Figure 4 It can be seen that in this embodiment, the blade is square, and a plurality of teeth 11 are provided on one of the long sides and one of the wide sides of the blade. In addition, the lifting member 5 will pass through the opening 331 when it descends.

[0053] As a preferred implementation of this embodiment, please refer to Figure 5-Figure 7 It can be seen that the unlocking member 6 is rotatably installed on the connecting seat 3, the unlocking member 6 is provided with a driving block 64, the lifting member 5 is provided with a through opening 51, and the driving block 64 is provided with a first abutting end 641 and a second abutting end 642. In the locked state, the first abutting end 641 abuts against the lower end of the through opening 51. In the unlocked state, the first abutting end 641 is separated from the lower end of the through opening 51, and the second abutting end 642 abuts against the upper end of the through opening 51.

[0054] Then, see Figure 5 and Figure 6 It can be seen that in this embodiment, a first slot hole 34 and a guide slot 35 are provided on one side surface of the connecting seat 3. The guide slot 35 is arranged around the first slot hole 34 and is connected to the first slot hole 34. The guide slot 35 is provided with a first positioning block 351 and a second positioning block 352 spaced apart from each other along its own extension path. The unlocking member 6 is provided with a connecting block 61. The connecting block 61 is provided with a guide block 62 around the connecting block 61. The connecting block 61 is arranged in the first slot hole 34, and the guide block 62 is arranged in the guide slot 35. The guide block 62 is provided with a positioning slot 621. In the locked state, the first positioning block 351 is clamped in the positioning slot 621, and in the unlocked state, the second positioning block 352 is clamped in the positioning slot 621.

[0055] Here, since the first positioning block 351, the second positioning block 352 and the guide block 62 are all made of plastic, they can be slightly deformed. When the guide block 62 rotates to the position of the first positioning block 351 or the second positioning block 352, it can be slightly deformed so that the first positioning block 351 is snapped into the positioning groove 621, or the second positioning block 352 is snapped into the positioning groove 621.

[0056] Here, the design of the guide groove 35 and the guide block 62 is mainly used to cooperate to complete the positioning and fixation of the unlocking member 6 in the locked state and the unlocked state. In the locked state, the unlocking member 6 is positioned by the clamping of the positioning block and the first positioning groove 621. In the unlocked state, the unlocking member 6 is positioned by the clamping of the positioning block and the second positioning groove 621. In the absence of external force, the unlocking member 6 will not rotate, thereby ensuring that the connecting seat 3 is stably fixed above the slide bar 2.

[0057] Next, in this embodiment, a second slot hole 36 is also provided on the connecting seat 3, and the first slot hole 34 and the second slot hole 36 are respectively arranged on the front and rear sides of the built-in chamber 33. A transfer column 63 is provided on the rear side of the connecting block 61, and the driving block 64 is arranged on the periphery of the transfer column 63. The end of the transfer column 63 away from the connecting block 61 is rotatably installed in the second slot hole 36.

[0058] See also Figure 2 、 Figure 5 、 Figure 6 and Figure 8 It can be seen that in this embodiment, a second screw hole 631 is provided at the end of the adapter column 63, and a screw 65 is provided on the rear side of the connecting seat 3, and the screw rod of the screw 65 is screwed into the second screw hole 631.

[0059] The installation principle of the unlocking member 6 is as follows: a connecting block 61 is provided on one side of the unlocking member 6, to which a transfer post 63 is fixed. A driving block 64 is provided around the transfer post 63. The connecting base 3 is provided with a first slot 34 and a second slot 36, which are respectively located on the front and rear sides of the built-in chamber 33. Therefore, when installing the unlocking member 6 on the connecting base 3, the end of the transfer post 63 is inserted into the second slot 36. At this time, the rear end of the driving block 64 abuts against the rear wall of the built-in chamber 33. The driving block 64 is located in the built-in chamber 33, the connecting block 61 is located in the first slot 34, and the guide block 62 located around the connecting block 61 is located in the guide groove 35.

[0060] Working principle of unlocking element 6: see Figure 4 and Figure 9When the connecting seat 3 needs to be fixed above the slide bar 2, it is only necessary to manually rotate the unlocking member 6 to the locking end (in this embodiment, it is counterclockwise rotation). At this time, the driving block 64 on the unlocking member 6 rotates with the unlocking member 6 and drives the lifting member 5 located inside the connecting seat 3 to descend through the first abutting end 641 until the second rack 52 at the lower end of the lifting member 5 and the first rack 21 at the upper end of the slide bar 2 engage with each other, thereby achieving the locking of the connecting seat 3; when the lock needs to be released, it is only necessary to manually rotate the unlocking member 6 to the unlocking end (in this embodiment, it is clockwise rotation). At this time, the driving member on the unlocking member 6 rotates with the unlocking member 6 and drives the lifting member 5 to rise through the second abutting end 642. At this time, the second rack 52 disengages from the first rack 21, thereby achieving the unlocking of the connecting seat 3.

[0061] See also Figure 1 and Figure 4 It can be seen that when the direction of the plastering blade 1 needs to be changed (to suit left-handed or right-handed work), it is only necessary to rotate the unlocking member 6 to unlock the connection between the connecting base 3 and the slide bar 2, and then slide the connecting base 3 out of the slide bar 2 in the left and right directions. Then, after changing the direction of the plastering blade 1, the connecting base 3 is slid into the appropriate position of the slide bar 2, and the unlocking member 6 is rotated to complete the locking between the connecting base 3 and the slide bar 2.

[0062] Note that to better press down on the lifter 5, in this embodiment, the first abutting end 641 is horizontal. In the locked state, the first abutting end 641 completely abuts the lower end of the opening 51. When switching from the locked state to the unlocked state, the drive block 64 undergoes a certain degree of compression and deformation, allowing the drive block 64 to smoothly rotate with the adapter post 63. When the second abutting end 642 contacts the upper end of the opening 51, the lifter 5 is driven upward.

[0063] See also Figure 1 and Figure 3 It can be seen that in this embodiment, the lower end of the connecting seat 3 is provided with a slide groove 31 arranged along the length direction, the slide bar 2 is slidably connected to the slide groove 31, the built-in chamber 33 is located above the slide groove 31, and the built-in chamber 33 is connected to the slide groove 31.

[0064] Then, the front and rear sides of the sliding groove 31 are respectively provided with limiting strips 32 , and the front and rear sides of the sliding bar 2 are respectively provided with limiting grooves 22 , and the limiting strips 32 are slidably connected in the limiting grooves 22 .

[0065] Here, the design of the sliding groove 31 allows the connecting seat 3 to slide smoothly onto the slide bar 2. In addition, the design of the limiting strip 32 and the limiting groove 22 can make the sliding connection between the connecting seat 3 and the slide bar 2 more stable, and the connecting seat 3 will not vertically separate from the slide bar 2. In this way, through the engagement of the horizontally arranged first rack 21 and the second rack 52, the vertical position, front-back position, and left-right position of the connecting column can be completely fixed, thereby making the overall structure very stable.

[0066] Next, see Figure 12 and Figure 13 A convex ring 411 is provided at one end of the handle 4, and a plug-in hole 38 is provided on one side of the upper end of the connecting seat 3. A stud is provided in the plug-in hole 38, and a plurality of clamping ribs 39 are provided between the stud and the inner wall of the plug-in hole 38. A plurality of clamping grooves 412 arranged along the circumferential direction are provided on the convex ring 411. The convex ring 411 is inserted into the plug-in hole 38, the stud is located in the ring of the convex ring 411, and the clamping ribs 39 are inserted into the clamping grooves 412. A long screw 65 for threading the stud is provided on the handle 4.

[0067] Then, in this embodiment, a hollow pipe 417 is provided inside the handle 4, a notch 415 is provided at the tail end of the handle 4, a through hole 416 is provided between the notch 415 and the hollow pipe 417, the screw head of the long screw 65 is arranged in the notch 415, the screw rod of the long screw 65 is arranged in the hollow pipe 417 and the through hole 416, the tail end of the notch 415 is provided with a tail head 43 for covering the screw head, a recess 413 and a protrusion 414 are provided on the outer wall of the handle 4, and an outer shell 42 is connected to the outside of the handle 4, and the outer shell 42 is provided with a makeshift opening 421 corresponding to the protrusion 414.

[0068] The installation principle of the connecting base 3 and the handle 4 is as follows: When installing the handle 4, the raised ring 411 of the handle 4 is inserted into the insertion hole 38. At this time, the snap-in rib 39 in the insertion hole 38 snaps into the snap-in groove 412 on the raised ring 411 and screws into the ring of the raised ring 411. Then, the long screw 65 is inserted from the rear end of the handle 4. After the screw rod of the long screw 65 passes through the through hole 416 and the hollow pipe 417, it is screwed into the second screw hole 631 on the stud. After the screw connection is completed, the screw head of the long screw 65 is located in the notch 415. Finally, the rear end of the notch 415 is sealed with the tail seal 43.

[0069] Furthermore, the recessed area 413 on the handle 4 enhances the grip of the handle 4. Furthermore, the soft rubber outer shell 42 attached to the handle 4 further enhances the grip of the handle 4. The raised area 414 on the handle 4 and the recessed area 421 on the outer shell 42 define the relative position of the handle 4 and the outer shell 42.

[0070] For more details, see Figure 14 and Figure 15 It can be seen that in this embodiment, the first rack 21 is provided with at least one clamping strip 23 arranged along the length direction, and the second rack 52 is provided with at least one wire groove 53 arranged along the length direction. In the locked state, the clamping strip 23 is clamped in the wire groove 53.

[0071] In this embodiment, there is one clamping strip 23, which is located on the front-to-back midline of the first rack 21, and one wire groove 53, which is located on the front-to-back midline of the second rack 52. The design of the clamping strip 23 and wire groove 53 further enhances the front-to-back position limit between the connecting base 3 and the slide bar 2 after the first rack 21 and the second rack 52 are engaged (in a locked state), making the overall installation structure more stable.

[0072] The above description of a stably installed bidirectional plastering trowel of the present invention is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A stable bidirectional trowel, characterized in that: include: Plastering blade, set the extension direction of the plastering blade to the long direction; A slide bar is fixed above the plastering blade along the length direction, and the upper end of the slide bar is provided with a first rack arranged along the length direction; A connecting seat is slidably mounted above the slide bar, wherein a built-in chamber is provided inside the connecting seat, and an opening is provided at the lower end of the built-in chamber; A handle is installed on one side of the connecting base; a lifting member disposed in the built-in chamber, wherein a second rack is provided at a lower end of the lifting member along the longitudinal direction, and the lifting member and the opening are located at corresponding upper and lower positions; The unlocking member is installed on the connecting seat and has a locking state in which the lifting member is driven to descend and the second rack and the first rack are engaged with each other, and an unlocking state in which the lifting member is driven to ascend and the second rack is upwardly disengaged from the first rack.

2. A stably installed bidirectional trowel according to claim 1, characterized in that: The unlocking member is rotatably mounted on the connecting seat, the unlocking member is provided with a driving block, the lifting member is provided with a through opening, the driving block is provided with a first abutting end and a second abutting end, in a locked state, the first abutting end abuts against the lower end of the through opening, in an unlocked state, the first abutting end is detached from the lower end of the through opening, and the second abutting end abuts against the upper end of the through opening.

3. A stably installed bidirectional trowel according to claim 2, characterized in that: A first slot and a guide slot are provided on one side surface of the connecting seat, the guide slot is arranged outside the first slot and is connected to the first slot, the guide slot is provided with a first positioning block and a second positioning block spaced apart from each other along its own extension path, the unlocking member is provided with a connecting block, the connecting block is provided with a guide block outside the connecting block, the connecting block is arranged in the first slot, the guide block is arranged in the guide slot, and the guide block is provided with a positioning slot, in the locked state, the first positioning block is clamped in the positioning slot, and in the unlocked state, the second positioning block is clamped in the positioning slot.

4. A stably installed bidirectional trowel according to claim 3, characterized in that: A second slot is also provided on the connecting seat, and the first slot and the second slot are respectively arranged on the front and rear sides of the built-in chamber. A transfer column is provided on the rear side of the connecting block, and the driving block is arranged on the periphery of the transfer column. The end of the transfer column away from the connecting block is rotatably installed in the second slot.

5. A stably installed bidirectional trowel according to claim 4, characterized in that: A second screw hole is provided at the end of the adapter column, and a screw is provided on the rear side of the connecting seat, and the screw rod of the screw is screwed into the second screw hole.

6. A stably installed bidirectional plastering trowel according to any one of claims 1 to 5, characterized in that: The lower end of the connecting seat is provided with a slide groove arranged along the length direction, the slide bar is slidably connected to the slide groove, the built-in chamber is located above the slide groove, and the built-in chamber is communicated with the slide groove.

7. A stably installed bidirectional plastering trowel according to claim 6, characterized in that: Limiting bars are respectively provided on the front and rear sides of the slide, and limiting grooves are respectively provided on the front and rear sides of the slide, and the limiting bars are slidably connected in the limiting grooves.

8. A stably installed bidirectional plastering trowel according to any one of claims 1 or 7, characterized in that: A convex ring is provided at one end of the handle, and a plug-in hole is provided on one side of the upper end of the connecting seat. A stud is provided in the plug-in hole, and a plurality of clamping ribs are provided between the stud and the inner wall of the plug-in hole. The convex ring is provided with a plurality of clamping grooves arranged along the circumference, the convex ring is inserted into the plug-in hole, the stud is located in the ring of the convex ring, the clamping ribs are inserted into the clamping groove, and the handle is provided with a long screw for threading the stud.

9. The stably installed bidirectional trowel according to claim 8, characterized in that: A hollow pipe is provided inside the handle, a notch is provided at the tail end of the handle, a through hole is provided between the notch and the hollow pipe, the screw head of the long screw is arranged in the notch, the screw rod of the long screw is arranged in the hollow pipe and the through hole, a tail seal head is provided at the tail end of the notch for covering the screw head, a recess and a protrusion are provided on the outer wall of the handle, an outer shell is sleeved on the outside of the handle, and a clearance opening corresponding to the protrusion is provided on the outer shell.

10. The stably installed bidirectional plastering trowel according to claim 1, characterized in that: The first rack is provided with at least one clamping strip arranged along the length direction, and the second rack is provided with at least one wire groove arranged along the length direction. In the locked state, the clamping strip is clamped in the wire groove.

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