Adjustable punching device for building template

Abstract

The utility model belongs to the technical field of building template trepanning, and particularly relates to a building template adjustable trepanning device which comprises a rotating shaft, one end of the rotating shaft is connected with a first grip, the first grip is provided with a first motor, the first motor is connected with the rotating shaft through a first gear transmission mechanism, and the other end of the rotating shaft is provided with a drill bit. The sleeve is sleeved with a second handle, the second handle is provided with a second motor, the second motor is connected with a saw blade installation base through a second gear transmission mechanism, the saw blade installation base is provided with a telescopic sleeve in the radial direction, one end of the telescopic sleeve is connected with the saw blade installation base, the other end of the telescopic sleeve is connected with a saw blade, and the telescopic sleeve is provided with a locking component for locking the length of the telescopic sleeve. Through the arrangement of the saw blade mounting seat, the telescopic sleeve and the saw blade in the telescopic sleeve, the diameter of the tapper can be changed at will under the condition that the tapper is not replaced, so that tapping is carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to building template opening technical field, concretely relates to a building template adjustable opening device. BACKGROUND

[0002] In the construction process of building wall, sometimes various pipes need to be set, these pipes will extend out of the wall, in actual construction, various sleeves need to be pre-buried, especially in the construction of civil air defense wall, first, the wall reinforcement is supported, then the formwork is supported on both sides of the wall reinforcement, the formwork is opened, the pipes and sleeves are used to pass through the wall, after the wall is poured, various pipes are passed into the sleeves.

[0003] The existing formwork opening mode is mostly that the opening device with fixed diameter is manually held to open, because the pipe diameters are different, the diameters of the holes needed to be punched on the formwork are also different, after the opening of a certain specification opening device, another specification opening device is replaced and opened, the operation is complicated. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a building template adjustable opening device to solve the problems in the above background.

[0005] To achieve the above technical purposes, the technical scheme of the utility model is:

[0006] A building template adjustable opening device, including pivot, one end of pivot is connected with first handle, first handle is equipped with first motor, first motor is connected with pivot through first gear transmission mechanism, the other end of pivot is installed with drill bit;

[0007] Pivot sleeve is installed with sleeve, the outside of sleeve is slidably sleeved with second handle, second handle is equipped with second motor, second motor is connected with saw blade mounting seat through second gear transmission mechanism, the outside of sleeve is slidably sleeved with sliding sleeve, saw blade mounting seat is rotationally sleeved on the outside of sliding sleeve, saw blade mounting seat is equipped with telescopic sleeve along the radial direction, one end of telescopic sleeve is connected with saw blade mounting seat, the other end is connected with saw blade, and the telescopic sleeve is equipped with locking part that locks the length of telescopic sleeve.

[0008] As a further improvement, the telescopic sleeve includes a first square tube connected to the saw blade mounting seat, a second square tube slidably inserted into the first square tube, and a third square tube slidably inserted into the second square tube. The end of the third square tube away from the saw blade mounting seat is connected to one end of the saw blade.

[0009] The locking part includes a first locking bolt threaded through a wall of the first square tube, a second locking bolt threaded through a wall of the second square tube, and a third locking bolt threaded through a wall of the third square tube.

[0010] As a further improvement, the saw blade mounting seat is provided with a hinged mounting groove, a first square tube is connected in the hinged mounting groove through a hinge shaft, the first square tube is provided with a hinge shaft mounting hole and a locking hole, the length extension direction of the locking hole is parallel to the axial direction of the hinge shaft mounting hole;

[0011] The saw blade mounting seat is provided with a first opening locking mechanism, the first opening locking mechanism comprises a locking frame, a locking rod is slidably arranged in the locking frame, one end of the locking rod is a screwing end, the screwing end is provided with a handle, the other end is a locking end, the locking end is matched with the locking hole, the locking rod is fixedly provided with a baffle and a card, a clamping plate is fixedly arranged in the locking frame;

[0012] A second compression spring is sleeved between the baffle and the locking end of the locking rod, one end of the second compression spring abuts against the baffle, and the other end abuts against the inner wall of the locking frame, and the card is arranged on the side of the baffle away from the second compression spring.

[0013] As a further improvement, the second gear transmission mechanism comprises a second driving gear rotatably mounted on the second handle and a second driven gear rotatably mounted on the sleeve, the second driven gear is fixedly connected with the saw blade mounting seat, and the second driving gear is connected with the second motor.

[0014] As a further improvement, a clamping block mounting cylinder is fixedly arranged on the sleeve near the drill bit, a first clamping groove is arranged on the outer surface of the clamping block mounting cylinder, and a clamping block is hingedly arranged in the first clamping groove.

[0015] An end of the clamping block mounting cylinder away from the drill bit is provided with a clamping sleeve, the clamping sleeve is slidably sleeved on the outside of the sleeve, a push rod is fixedly arranged on one end of the clamping sleeve close to the drill bit, one end surface of the clamping block close to the clamping sleeve is a semicircular surface, and the clamping block is provided with a gear tooth on the semicircular surface; a rack is arranged on one end of the push rod close to the clamping block, and the rack of the push rod is matched with the gear tooth of the clamping block.

[0016] As a further improvement, a fixing sleeve and a first compression spring are further sleeved on the outside of the sleeve, the first compression spring is arranged between the fixing sleeve and the clamping sleeve, one end of the first compression spring abuts against the fixing sleeve, and the clamping sleeve is provided with a second opening locking mechanism.

[0017] As a further improvement, a second opening locking mechanism is slidably connected to the top of the clamping sleeve, the second opening locking mechanism comprises a rack slide piece fixedly arranged on the outside of the sleeve along the axial direction of the sleeve, a rack slide rod is slidably connected to the rack slide piece in a direction perpendicular to the rack slide piece, a switch regulator clamping groove is fixedly arranged on the outer side wall of the clamping sleeve, the top of the rack slide rod is slidably connected in the inside of the switch regulator clamping groove, a switch regulator is threadedly connected to the top of the switch regulator clamping groove, the rack slide rod penetrates through the side wall of the clamping sleeve and is matched with the rack slide piece, and the bottom of the switch regulator abuts against the top of the rack slide rod.

[0018] As a further improvement, the clamping block is semicircular near one end of the clamping sleeve, and the clamping block semicircular part is provided with a gear;

[0019] The push rod is provided with a gear near one end of the clamping block, and the push rod gear part is matched with the clamping block gear part.

[0020] As a further improvement, the inner wall of the clamping sleeve is provided with a second clamping groove, and the outer wall of the sleeve is provided with a clamping block which is slidingly connected in the second clamping groove.

[0021] As a further improvement, the clamping sleeve is provided with a plurality of guide rods, and the outer wall of the clamping block mounting cylinder is provided with a plurality of guide grooves, and the plurality of guide rods and the plurality of guide grooves are one-to-one corresponding and matched.

[0022] As a further improvement, the second square tube slidingly inserted in the first square tube can be adjusted in extension and retraction along the inner wall of the first square tube.

[0023] The third square tube slidingly inserted in the second square tube can be adjusted in extension and retraction along the inner wall of the second square tube.

[0024] The saw blade can rotate around the hinge point of the third square tube and the saw blade, and the saw blade can be rotated and retracted into the inner wall of the third square tube.

[0025] Due to the adoption of the above technical scheme, the building template adjustable opening device has the following beneficial effects:

[0026] The building template adjustable opening device provided by the utility model can adjust the relative position of the first square tube, the second square tube and the third square tube according to the required opening diameter, adjust the distance between the saw blade and the central axis of the rotating shaft, and adapt to the requirements of different opening diameters.

[0027] The relative position of the first square tube, the second square tube and the third square tube is fixed through the first locking bolt and the second locking bolt.

[0028] After the template passes through the drill bit and reaches the clamping block mounting cylinder, the second opening locking mechanism is opened, the clamping sleeve is driven to slide towards the end close to the drill bit under the elastic force of the first compression spring, the gear on the push rod is engaged with the gear of the clamping block semicircular part, the clamping sleeve continues to slide towards the end of the drill bit, the push rod pushes the clamping block to rotate, the end of the clamping block away from the push rod protrudes out of the first clamping groove, the template is limited, the building template adjustable opening device is fixed on the template through the clamping sleeve, and the building template adjustable opening device is prevented from moving randomly on the template during the opening process, so that the opening path is deviated. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the overall structure schematic view of the utility model;

[0030] Figure 2 is the front view of the utility model;

[0031] Figure 3 is the assembly schematic view of the saw blade mounting seat and the telescopic sleeve of the utility model;

[0032] Figure 4 is the assembly schematic view of the clamp block mounting cylinder and the clamping sleeve of the utility model;

[0033] Figure 5 is the structure schematic view of the second clamping sleeve slot of the utility model;

[0034] Figure 6 is the structure schematic view of the first opening locking mechanism of the utility model;

[0035] Figure 7 is the structure schematic view of the second opening locking mechanism of the utility model;

[0036] Figure 8 is the structure schematic view of the saw blade mounting seat and the first square tube of the utility model;

[0037] Figure 9 is the structure schematic view of the first motor of the utility model;

[0038] Figure 10 is the structure schematic view of the second motor.

[0039] Wherein: 1-rotating shaft, 101-sleeve, 1011-clamping block, 102-sliding sleeve, 2-first handle, 201-first motor, 2011-first gear transmission mechanism, 3-drill bit, 4-second handle, 401-second motor, 4011-second gear transmission mechanism, 40111-second driving gear, 40112-second driven gear, 5-saw blade mounting seat, 501-telescopic sleeve, 5011-first square tube, 5012-second square tube, 5013-third square tube, 5014-saw blade, 5015-locking component, 50151-first locking bolt, 50152-second locking bolt, 50153-third locking bolt, 502-hinged mounting groove, 50211-hinge shaft mounting hole, 50212-locking hole, 503-first opening locking mechanism, 5031-locking frame, 50311-clamping plate, 5032-locking rod, 50321-baffle, 50322-clamping piece, 5033-second compression spring, 6-clamp block mounting cylinder, 601-first clamping slot, 602-clamp block, 603-guide groove, 604-clamping rod, 7-clamping sleeve, 701-push rod, 702-second clamping slot, 703-second opening locking mechanism, 7031-switch regulator, 7032-switch regulator clamping slot, 7033-rack slide rod, 7034-rack slide piece, 704-guide rod, 8-first compression spring, 9-fixing sleeve. DETAILED DESCRIPTION

[0040] The technical solutions of the utility model will be described clearly and completely in combination with the specific embodiments below, but the person skilled in the art will understand that the following described embodiments are part of the embodiments of the utility model, instead of all the embodiments, and are only used for illustrating the utility model, and should not be regarded as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model. The unmarked specific conditions in the embodiments are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used are not marked with the manufacturer, and are all conventional products that can be obtained by market purchase.

[0041] As shown in Figures 1-10 A building template adjustable opening device, including pivot 1, one end of pivot 1 is rotatably connected with first handle 2, first handle 2 is equipped with first motor 201, first motor 201 is connected with pivot 1 through first gear transmission mechanism 2011, the other end of pivot 1 is installed with drill bit 3, when first motor 201 is started, first motor 201 drives pivot 1 to rotate through first gear transmission mechanism 2011, thereby driving drill bit 3 at the other end to rotate, drill bit 3 passes through template and positions the position needing to be opened on template.

[0042] Pivot 1 is rotatably sleeved with sleeve 101 on the outside, sleeve 101 is fixedly connected with first handle 2, second handle 4 is slidably sleeved and installed on the outside of sleeve 101, second handle 4 is equipped with second motor 401, second motor 401 is connected with saw blade mounting seat 5 through second gear transmission mechanism 4011, sliding sleeve 102 is slidably sleeved on the outside of sleeve 101, saw blade mounting seat 5 is rotatably sleeved on the outside of sliding sleeve 102, saw blade mounting seat 5 is equipped with telescopic sleeve pipe 501 along the radial direction, telescopic sleeve pipe 501 can be lengthened or shortened, one end of telescopic sleeve pipe 501 is connected with saw blade mounting seat 5, the other end is connected with saw blade 5014, telescopic sleeve pipe 501 is equipped with locking member 5015 for locking the length of telescopic sleeve pipe 501, according to the size of the hole diameter needing to be opened, lengthen or shorten telescopic sleeve pipe 501 to adapt to the needs of different hole diameters, then the length of telescopic sleeve pipe is fixed through locking member 5015, second motor 401 drives saw blade mounting seat 5 to rotate through second gear transmission mechanism 4011, thereby driving telescopic sleeve pipe 501 and saw blade 5014 to rotate, in the process of rotating saw blade mounting seat 5, second handle 4, sliding sleeve 102, saw blade mounting seat 5 and telescopic sleeve pipe 501 are simultaneously pushed towards the side close to template, realizing the opening of template.

[0043] In the embodiment, the telescopic sleeve 501 comprises a first square tube 5011 connected with the saw blade mounting seat 5, a second square tube 5012 slidingly inserted into the first square tube 5011, and a third square tube 5013 slidingly inserted into the second square tube 5012, and the third square tube 5013 is connected with the saw blade 5014 at an end away from the saw blade mounting seat 5;

[0044] The locking component 5015 comprises a first locking bolt 50151 threaded through and mounted on the wall of the first square tube 5011, a second locking bolt 50152 threaded through and mounted on the wall of the second square tube 5012, and a third locking bolt 50153 threaded through and mounted on the wall of the third square tube 5013. Specifically, when the template is being holed, the first locking bolt 50151 on the wall of the first square tube 5011 is tightly abutted against the outer wall of the second square tube 5012 through the inner wall of the first square tube 5011, and the second locking bolt 50152 on the wall of the second square tube 5012 is tightly abutted against the outer wall of the third square tube 5013 through the inner wall of the second square tube 5012, so as to fix the length of the telescopic sleeve 501.

[0045] The saw blade 5014 is hinged with the third square tube 5013, and a nut matched with the third locking bolt 50153 is fixedly arranged on the saw blade 5014. When not in use, the saw blade can be retracted into the third square tube. When in use, the saw blade is rotated to be perpendicular to the third square tube, and then the third locking bolt 50153 is screwed with the nut on the saw blade through the inner wall of the third square tube 5013, so as to fix the saw blade.

[0046] In the embodiment, the second square tube 5012 slidingly inserted into the first square tube 5011 can be adjusted in length along the inner wall of the first square tube 5011.

[0047] The third square tube 5013 slidingly inserted into the second square tube 5012 can be adjusted in length along the inner wall of the second square tube 5012.

[0048] The saw blade 5014 can be rotated around the hinge point of the third square tube 5013 and the saw blade 5014, and the saw blade 5014 can be retracted into the inner wall of the third square tube 5013. By adjusting the relative positions of the first square tube 5011, the second square tube 5012 and the third square tube 5013, the diameter of the hole can be changed.

[0049] In the embodiment, the saw blade mounting seat 5 is provided with a hinged mounting groove 502, the first square tube 5011 is connected with the hinged mounting groove 502 through a hinge shaft, the first square tube 5011 is provided with a hinge shaft mounting hole 50211 and a locking hole 50212, and the length extension direction of the locking hole 50212 is parallel to the axial direction of the hinge shaft mounting hole 50211.

[0050] The saw blade mounting seat 5 is provided with a first opening locking mechanism, the first opening locking mechanism comprises a locking frame 5031, the locking frame 5031 is provided with a locking rod 5032 penetratingly and slidingly, one end of the locking rod 5032 is a screwing end, the screwing end is provided with a handle, the other end is a locking end, the locking end is matched with a locking hole 50212, the locking rod 5032 is fixedly provided with a baffle 50321 and a card 50322;

[0051] The locking frame 503 is fixedly provided with a clamping plate 50311, the clamping plate 50311 is matched with the card 50322;

[0052] The locking rod 5032 is sleeved with a second compression spring 5033 between the baffle 50321 and the locking end, one end of the second compression spring 5033 abuts against the baffle 50321, the other end abuts against the inner wall of the locking frame 5031, and the card 50322 is arranged on the side of the baffle 50321 away from the second compression spring.

[0053] When not in use, the telescopic sleeve 501 is parallel to the axis of the rotating shaft, when in use, the telescopic sleeve 501 is rotated to be perpendicular to the axis of the rotating shaft, and the telescopic sleeve is fixed through the first opening locking mechanism, specifically, in the initial state, the clamping plate 50311 is located between the card 50322 and the baffle 50321, when it is necessary to fix the telescopic sleeve 501, the locking rod 5032 is pushed along the length extension direction of the locking frame 5031, the locking end of the locking rod 5032 enters the locking hole 50212, and at the same time, the second compression spring 5033 is compressed, when the card 50322 moves to the side of the clamping plate 50311 close to the locking end of the locking rod 5032, the handle is rotated to make the card 50322 abut against the clamping plate 50311, so that the telescopic sleeve 501 is locked and the rotation of the telescopic sleeve 501 is prevented.

[0054] In the embodiment, the second gear transmission mechanism 4011 comprises a second driving gear 40111 rotatably installed on the second handle 4 and a second driven gear 40112 rotatably installed on the sleeve 101, the second driven gear 40112 is fixedly connected with the saw blade mounting seat 5, and the second driving gear 40111 is connected with the second motor 402, specifically, when the second motor 401 is started, the second motor 401 drives the second driving gear 40111 to rotate, and further drives the second driven gear 40112, the saw blade mounting seat 5 and the telescopic sleeve 501 to rotate.

[0055] In the embodiment, the sleeve 101 is fixedly provided with a clamping block mounting cylinder 6 close to the position of the drill bit 3, the clamping block mounting cylinder 6 is provided with a first clamping groove 601 on the outer surface, the first clamping groove 601 is hingedly connected with a clamping block 602 through a hinge shaft, the outer diameter of the clamping block mounting cylinder is slightly smaller than the outer diameter of the drill bit, and when the clamping block is parallel to the axial direction of the clamping block mounting cylinder, the distance from the outer side surface of the clamping block to the axial center of the clamping block mounting cylinder is also slightly smaller than the outer diameter of the drill bit.

[0056] The clamping sleeve 7 is sleeved on the outside of the sleeve 101, and the end of the clamping sleeve 7 close to the drill bit 3 is fixedly provided with a push rod 701. The end face of the clamping block 602 close to the clamping sleeve 7 is a semicircular arc face, and the semicircular arc face of the clamping block is provided with a gear tooth. The end of the push rod 701 close to the clamping block 602 is provided with a rack, and the rack of the push rod is matched with the gear tooth of the clamping block. Specifically, the axis of the semicircular arc face of the clamping block is coaxially arranged with the hinge shaft. When the push rod moves towards the clamping block, the rack of the push rod is engaged with the gear tooth at the end of the clamping block, so that the clamping block rotates, the other end of the clamping block is raised, and the distance between the outer side face of the clamping block and the axis of the clamping block mounting cylinder is greater than the outer diameter of the drill bit.

[0057] The outside of the sleeve 101 is also sleeved with a fixing sleeve 9 and a first compression spring 8. The first compression spring 8 is arranged between the fixing sleeve 9 and the clamping sleeve 7. One end of the first compression spring 8 abuts against the fixing sleeve 9, and the other end abuts against the clamping sleeve 7. The clamping sleeve 7 is provided with a second opening locking mechanism 703. In the initial state, the first compression spring is in a compressed state. After the drill bit 3 passes through the template, the template moves to the end of the clamping block mounting cylinder 6 close to the clamping sleeve 7, the second opening locking mechanism 703 at the top of the clamping sleeve 7 is opened, so that the clamping sleeve 7 is driven to move towards the side close to the drill bit 3 under the pushing of the first compression spring 8, and then the push rod 701 moves. The clamping block 602 is provided with a clamping rod hole at the semicircular arc face, and the clamping block 602 is connected with the clamping block mounting cylinder 6 through a clamping rod 604. When the push rod 701 moves towards the side close to the drill bit 3, the gear tooth of the push rod 701 is engaged with the gear tooth of the clamping block 602, so that the clamping block 602 rotates around the clamping rod 604. The end of the clamping block 602 away from the push rod protrudes from the first clamping groove 601, so as to fix the template between the clamping block 602 and the clamping sleeve 7 and limit the template.

[0058] In the embodiment, the second opening locking mechanism 703 comprises a rack slide 7034 fixedly arranged outside the sleeve 101 along the axis direction of the sleeve 101, the rack slide 7034 is slidingly connected with a rack slide rod 7033 perpendicular to the direction of the rack slide 7034, the clamping sleeve 7 is fixedly provided with a switch adjuster clamping groove 7032, the top of the rack slide rod 7033 is slidingly connected inside the switch adjuster clamping groove 7032, the top of the switch adjuster clamping groove 7032 is threadedly connected with a switch adjuster 7031, the rack slide rod 7033 penetrates through the clamping sleeve 7 and cooperates with the rack slide 7034, the bottom of the switch adjuster 7031 abuts against the top of the rack slide rod 7033, specifically, the switch adjuster 7031 in the switch adjuster clamping groove 7032 is rotated to the bottom, so that the switch adjuster 7031 tightly abuts against the rack slide rod 7033, thereby embedding the rack slide rod 7033 and the rack slide 7034, so as to fix the position of the clamping sleeve 7 on the sleeve 101, when the switch adjuster 7031 in the switch adjuster clamping groove 7032 is rotated out, the switch adjuster 7031 cannot abut against the rack slide rod 7033, thereby driving the clamping sleeve 7 to move along one side of the drill bit 3 under the pushing of the first compression spring 8, at the same time, the rack slide rod 7033 is lifted up.

[0059] In the embodiment, the connection part of the rack slide rod 7033 and the rack slide 7034 is provided with a rack, when the rack slide rod 7033 and the rack slide 7034 interact, the rack increases the interaction force of the two, thereby making the rack slide rod 7033 and the rack slide 7034 cooperate better.

[0060] In the embodiment, the inner wall of the clamping sleeve 7 is provided with a second clamping groove 702, the outer side wall of the sleeve 101 is provided with a clamping block 1011, the clamping block 1011 is slidingly connected in the second clamping groove 702, through the cooperation of the second clamping groove 702 and the clamping block 1011 on the outer side wall of the sleeve 101, the sliding direction of the clamping sleeve 7 is further limited.

[0061] In the embodiment, the clamping sleeve 7 is provided with a plurality of guide rods 704, the outer side wall of the clamping block mounting cylinder 6 is provided with a plurality of guide grooves 603, the plurality of guide rods 704 correspond to the plurality of guide grooves 603 and cooperate with each other, when the clamping block 602 and the push rod 701 interact, the existence of the guide rod 704 limits the mutual movement direction of the clamping block 602 and the push rod 701.

[0062] In the embodiment, the telescopic sleeve and the saw blade can be provided with multiple groups and are uniformly distributed on the circumference of the saw blade mounting seat, the opening effect is better.

[0063] The push rod 701 and the clamping block 602 are also provided with multiple, the multiple push rods correspond to the multiple clamping blocks and cooperate with each other.

[0064] In use, the first motor is started to drive the rotating shaft and the drill bit to rotate, the drill bit penetrates the template, the clamping sleeve 7 is pushed towards the template, the push rod is driven to move, the push rod 701 drives the clamping block to rotate around the clamping rod 604, the clamping block 602 protrudes from the first clamping groove 601 at one end away from the push rod 701, the clamping sleeve is continuously pushed to limit the template between the clamping block 602 and the clamping sleeve 7, in the process, the second opening locking mechanism 703 can be adjusted, the switch adjuster 7031 is rotated to be separated from the rack slide rod 7033, under the elastic force of the first compression spring 8, the clamping sleeve 7 slides towards the side of the drill bit, the rack slide rod 7033 is lifted up at the same time, the position of the clamping sleeve is adjusted, the clamping block 602 and the clamping sleeve 7 clamp the template;

[0065] The telescopic sleeve 501 is rotated to be perpendicular to the axis of the rotating shaft, then the length of the telescopic sleeve 501 is adjusted according to the size of the hole to be opened, the saw blade is rotated out to be parallel to the axis of the rotating shaft, and is locked by the locking part;

[0066] Then the second motor is driven, the second motor 401 drives the saw blade mounting seat 5, the telescopic sleeve 501 and the saw blade 5014 to rotate, the second handle 4, the saw blade mounting seat 5 and the sliding sleeve 102 are pushed to slide towards the end of the drill bit, and the template is opened.

[0067] The specific implementation of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An adjustable opening device for a building form, comprising a pivot, characterised in that, One end of the rotating shaft is connected with a first handle, the first handle is provided with a first motor, the first motor is connected with the rotating shaft through a first gear transmission mechanism, the other end of the rotating shaft is provided with a drill bit; The rotating shaft sleeve is provided with a sleeve, the outer side of the sleeve is provided with a second handle, the second handle is provided with a second motor, the second motor is connected with a saw blade mounting seat through a second gear transmission mechanism, the outer side of the sleeve is provided with a sliding sleeve, the saw blade mounting seat is rotatably arranged on the outer side of the sliding sleeve, the saw blade mounting seat is provided with an extension sleeve along the radial direction, one end of the extension sleeve is connected with the saw blade mounting seat, the other end of the extension sleeve is connected with a saw blade, the extension sleeve is provided with a locking member for locking the length of the extension sleeve.

2. An adjustable opening device for a building formwork according to claim 1, wherein, The extension sleeve comprises a first square tube connected with the saw blade mounting seat, a second square tube is slidably inserted into the first square tube, a third square tube is slidably inserted into the second square tube, one end of the third square tube away from the saw blade mounting seat is hingedly connected with the saw blade; The locking member comprises a first locking bolt threadedly penetrating and mounted on the wall of the first square tube, a second locking bolt threadedly penetrating and mounted on the wall of the second square tube, and a third locking bolt threadedly penetrating and mounted on the wall of the third square tube.

3. An adjustable opening device for a building formwork according to claim 2, wherein, The saw blade mounting seat is provided with a hinged mounting groove, the first square tube is connected with the hinged mounting groove through a hinge shaft, the first square tube is provided with a hinge shaft mounting hole and a locking hole, the length of the locking hole extends in a direction parallel to the axial direction of the hinge shaft mounting hole; The saw blade mounting seat is provided with a first opening locking mechanism, the first opening locking mechanism comprises a locking frame, the locking frame is provided with a locking rod which penetrates and slides, one end of the locking rod is a screwing end, the screwing end is provided with a handle, the other end of the locking rod is a locking end, the locking end is matched with the locking hole, the locking rod is fixedly provided with a baffle and a card, the locking frame is fixedly provided with a clamping plate; A second compression spring is sleeved on the locking rod between the baffle and the locking end, one end of the second compression spring abuts against the baffle, the other end of the second compression spring abuts against the inner wall of the locking frame, the card is arranged on the side of the baffle away from the second compression spring.

4. An adjustable opening device for a building formwork according to claim 1, wherein, The second gear transmission mechanism comprises a second driving gear rotatably mounted on the second handle and a second driven gear rotatably mounted on the sleeve, the second driven gear is fixedly connected with the saw blade mounting seat, the second driving gear is connected with the second motor.

5. An adjustable aperture device for a building formwork according to any one of claims 1 to 4, wherein, The sleeve is fixedly provided with a clamping block mounting cylinder near the position of the drill bit, the clamping block mounting cylinder is provided with a first clamping groove on the circumferential surface, and the clamping block is hingedly connected in the first clamping groove; One end of the clamping block mounting cylinder away from the drill bit is provided with a clamping sleeve, the clamping sleeve is slidably arranged on the outside of the sleeve, one end of the clamping sleeve near the drill bit is fixedly provided with a push rod, one end surface of the clamping block near the clamping sleeve is a semicircular arc surface, and the semicircular arc surface of the clamping block is provided with a gear tooth; one end of the push rod near the clamping block is provided with a rack, and the rack of the push rod is matched with part of the gear tooth of the clamping block.

6. An adjustable hole device for a building formwork according to claim 5, wherein, The outer part of the sleeve is sleeved with a fixing sleeve and a first compression spring, one end of the first compression spring is in abutment with the fixing sleeve, and the other end is in abutment with the clamping sleeve, and the clamping sleeve is provided with a second opening locking mechanism.

7. An adjustable hole device for a building formwork according to claim 6, wherein, The second opening locking mechanism comprises a rack slide fixedly arranged on the outer part of the sleeve along the axial direction of the sleeve, a rack slide rod slidingly connected to the rack slide perpendicularly to the direction of the rack slide, a switch adjuster clamping groove fixedly arranged on the outer side wall of the clamping sleeve, the top of the rack slide rod slidingly connected in the switch adjuster clamping groove, a switch adjuster threadedly connected to the top of the switch adjuster clamping groove, the rack slide rod penetrating through the side wall of the clamping sleeve and matched with the rack slide, and the bottom of the switch adjuster in abutment with the top of the rack slide rod.

8. An adjustable opening device for a building formwork according to claim 5, wherein, The inner wall of the clamping sleeve is provided with a second clamping groove, and the outer side wall of the sleeve is provided with a clamping block slidingly connected in the second clamping groove.

9. An adjustable hole device for a building formwork according to claim 5, wherein, The clamping sleeve is provided with a plurality of guide rods, and the outer side wall of the clamping block mounting cylinder is provided with a plurality of guide grooves, and the plurality of guide rods and the plurality of guide grooves correspond to each other and cooperate with each other.

10. An adjustable hole device for a building formwork according to claim 2, wherein, The second square tube slidingly inserted in the first square tube can be telescopic adjusted along the inner wall of the first square tube; The third square tube slidingly inserted in the second square tube can be telescopic adjusted along the inner wall of the second square tube; The saw blade can rotate around the hinge point of the third square tube and the saw blade, and the saw blade can be rotated and retracted into the inner wall of the third square tube.

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