A vibratory joint cutter for roller-compacted concrete

Abstract

This utility model discloses a vibratory joint cutter for roller-compacted concrete, including a plate vibrator and a base structure. The plate vibrator is installed on the top of the base structure. The cutter structure is installed through the base structure and its position can be adjusted along the width direction of the base structure. This device is simple to operate and can align the joints.

Description

Technical Field

[0001] This utility model relates to a vibratory joint cutter for roller-compacted concrete. Background Technology

[0002] The main purpose of cutting grooves (also known as sawing or slitting) after roller-compacted concrete (RCC) construction is to control the location and shape of cracks, and to prevent irregular cracks from forming in the concrete due to temperature changes, drying shrinkage, or load, thereby affecting the integrity and durability of the structure. The specific purpose and principle are as follows:

[0003] 1. The core objective is to induce cracks to occur at predetermined locations. By pre-cutting, regular "artificial cracks" are formed at weak points in the concrete, guiding the cracks to spread along the cut direction and avoiding random cracking (such as alligator cracking, diagonal cracking, etc.).

[0004] 2. Releasing internal stress: During the hardening process of roller-compacted concrete, tensile stress is generated due to temperature shrinkage, drying shrinkage, or load. Cutting can release stress and reduce internal damage.

[0005] The timing for cutting the joint is when the concrete has reached a certain strength but has not fully hardened (generally within 12 to 48 hours after construction).

[0006] In the existing technology, the cutting is done manually because the entry of large equipment will cause surface deformation of the concrete, while manual cutting does not have this problem.

[0007] However, when cutting slits manually, it is impossible to guarantee the neatness of two adjacent slits. Furthermore, the existing slit cutting method is mainly based on sawing. When sawing, the direction of the cutting machine cannot be guaranteed to be straight, resulting in a curved and non-straight slit.

[0008] Based on the above problems, we designed a simple-to-operate, alignable cutter for roller-compacted concrete. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a simple-to-operate, alignable, vibratory cutter for compacted concrete.

[0010] To solve the above problems, the present invention adopts the following technical solution:

[0011] A vibratory joint cutter for roller-compacted concrete includes a plate vibrator and further includes,

[0012] The base structure, wherein the plate vibrator is installed on top of the base structure.

[0013] A cutting blade structure is mounted on the base structure, and the position of the cutting blade structure can be adjusted along the width direction of the base structure.

[0014] Preferably, the base structure includes a base plate, which is rectangular and has grooves machined in two width directions. A mounting seat is fixed on the top of the base plate, and the lower part of the mounting seat is a through cavity. The flat vibrator is installed on the top of the mounting seat, and the cutter structure slides and adjusts along the grooves. Two vertical rods are fixed on the top of the mounting seat, and a hand handle is installed between the tops of the two vertical rods.

[0015] Preferably, the cutting structure includes two interlocking cutting plates. A locking block is provided at the top outer end of each cutting plate. The locking block has a right-angled groove that fits into the base plate. A locking strip is machined on the vertical surface of the right-angled groove. The locking strip cooperates with the groove and can slide along the groove. A through mounting hole is provided on the side of the locking block. A tensioning unit is installed between the two locking blocks. The tensioning unit passes through the mounting hole and through the through cavity. After the locking blocks on both sides are installed, the upper end surface of the cutting plate contacts the bottom surface of the base plate, so that the vibration force generated by the plate vibrator is transmitted to the cutting plate through the base plate.

[0016] Preferably, the lower end of the cutting plate has a blade.

[0017] Preferably, a positioning post is provided at the splicing surface of one of the cutting blades, and a positioning hole for inserting the positioning post is provided at the splicing surface of the other cutting blade.

[0018] Preferably, the tensioning unit includes a pull rod and nuts that fit at both ends of the pull rod. The two ends of the pull rod pass through mounting holes on both sides, and the nuts are fitted after the pull rod passes through the mounting holes. After the nuts are tightened, they press down the locking block.

[0019] The beneficial effects of this utility model are:

[0020] One advantage is that the device is small in size and easy for workers to operate by hand.

[0021] Secondly, the position of the cutting blade structure is adjustable, making it convenient to perform slit cutting operations on locations close to the wall.

[0022] Thirdly, the cutting structure is detachable. After removal, this device can be used as a regular plate vibrator, making it more practical.

[0023] Fourthly, during the second cut, the cutting structure partially inserts into the previously made slit, resulting in a higher degree of neatness in the final slit.

[0024] Fifthly, the straight cutting blade structure can produce a straight cut. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 for Figure 1 A magnified view of a portion at point A;

[0028] Figure 3 This is a schematic diagram of the cutter plate assembly;

[0029] Figure 4 This is a diagram showing the usage status of this device;

[0030] Figure 5 This is another usage state diagram of this device.

[0031] Figure reference numerals:

[0032] Base structure 1, base plate 11, groove 12, mounting base 13, through cavity, vertical rod 14, hand handle 15, cutting structure 2, cutting plate 21, blade 211, positioning post 212, positioning hole 213, locking block 22, right angle groove 23, locking strip 24, mounting hole 25, tensioning unit, tie rod 261, nut 262, plate vibrator 3. Detailed Implementation

[0033] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0034] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0035] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] See Figure 1 The roller-compacted concrete vibratory joint cutter shown includes a plate vibrator 3, and also includes,

[0039] The base structure 1, the plate vibrator 3 is installed on the top of the base structure 1.

[0040] The cutter structure 2 is mounted on the base structure 1 and its position can be adjusted along the width direction of the base structure 1.

[0041] The plate vibrator is a 0.75KW attached plate vibrator 10, weighing 8.6kg, with a vibration force of up to 350kg.

[0042] The plate vibrator is powered by 380V AC. After connecting the power supply and turning on the control switch, the roller-compacted concrete vibratory cutter can start working. Under the excitation force of the plate vibrator, the cutter structure 2 smoothly cuts into the roller-compacted concrete to complete the cutting work.

[0043] See Figure 4 As shown, after removing the cutter structure 2, this device can be used as a conventional flat plate vibration device.

[0044] See Figure 5As shown, the position of the cutter structure 2 can be relatively slidable to accommodate the cutting needs near the wall.

[0045] See Figure 1 and Figure 2 As shown, the base structure 1 includes a base plate 11, which is rectangular. Grooves 12 are machined in two width directions of the base plate 11. A mounting seat 13 is fixed on the top of the base plate 11. The lower part of the mounting seat 13 is a through cavity. The flat vibrator 3 is installed on the top of the mounting seat 13. The cutter structure 2 slides and adjusts along the grooves 12. A vertical rod 14 is fixed on the top of the mounting seat 13. Two vertical rods 14 are arranged in parallel. A hand handle 15 is installed between the tops of the two vertical rods 14.

[0046] The base plate 11 and the mounting base 13 are welded structures and are both made of steel.

[0047] The vertical rod 14 is fixed to the mounting base 13 by screws or welding. In this embodiment, screws are used.

[0048] The hand handle 15 is connected to the vertical bars 14 on both sides by welding.

[0049] The flat vibrator 3 is fixed to the mounting base 13 with bolts.

[0050] In the above technical solution, the plate vibrator 3 is mounted on the mounting base 13 to facilitate the installation of the cutter structure 2.

[0051] See Figure 2 and Figure 3 As shown, the cutter structure 2 includes two cutter plates 21 spliced ​​together. A locking block 22 is provided at the top outer end of each cutter plate 21. The locking block 22 has a right-angle groove 23 that fits the base plate 11. A locking strip 24 is machined on the vertical surface of the right-angle groove 23. The locking strip 24 cooperates with the groove 12 and can slide along the groove 12. A through mounting hole 25 is provided on the side of the locking block 22. A tensioning unit is installed between the two locking blocks 22. The tensioning unit passes through the mounting hole 25 and passes through the through cavity. After the locking blocks 22 on both sides are installed, the upper end surface of the cutter plate 21 contacts the bottom surface of the base plate 11, so that the vibration force generated by the plate vibrator 3 is transmitted to the cutter plate 21 through the base plate 11.

[0052] The cutting plate 21 is made of a 5mm thick steel plate.

[0053] The lower end of the cutting plate 21 has a blade 211.

[0054] The sharp corner of blade 211 is transitioned with a small rounded arc.

[0055] In the above technical solution, two cutting plates 21 are spliced ​​together, which facilitates the fitting of the base plate 11 after assembly.

[0056] The tensioning unit can tighten the locking blocks 22 on both sides, so that the two cutting plates 21 can be spliced ​​together.

[0057] Furthermore, the locking block 22 can slide along the groove to facilitate the position adjustment of the cutter plate 21.

[0058] The upper end face of the cutter plate 21 contacts the bottom of the base plate 11 to facilitate the transmission of vibration force.

[0059] See Figure 3 As shown, a positioning post 212 is provided at the splicing surface of one of the cutting blades 21, and a positioning hole 213 for inserting the positioning post 212 is provided at the splicing surface of the other cutting blade 21.

[0060] This technical solution can increase the alignment and neatness of the two cutting plates 21 after they are spliced ​​together.

[0061] See Figure 2 As shown, the tensioning unit includes a pull rod 261 and nuts 262 that fit at both ends of the pull rod 261. The two ends of the pull rod 261 pass through the mounting holes 25 on both sides respectively. After the pull rod 261 passes through the mounting holes 25, the nuts 262 are fitted. After the nuts 262 are locked, they press down the locking block 22.

[0062] The above technical solution is relatively simple to implement. It only requires loosening the nut 262 to slide and adjust the position of the locking block 22. After the adjustment is completed, the nut 262 is then tightened.

[0063] I. Product Overview

[0064] This product is a specialized piece of equipment for cutting joints in roller-compacted concrete. It uses a plate vibrator to provide vibration force, which drives the cutting mechanism to complete the concrete cutting operation. It has the following features:

[0065] The cut position can be adjusted by sliding laterally.

[0066] The detachable cutter structure allows it to be used as a regular flat vibrator.

[0067] Driven by 380V power supply, it has strong excitation force (350kg) and high cutting efficiency.

[0068] Steel welded structure, sturdy and durable.

[0069] II. Main Technical Parameters

[0070] project parameter model ZQJ-350 Rated power 0.75KW power supply voltage 380V AC power Excitation force 350kg Total weight 28kg (including cutting knife) Cut width 5mm

[0071] III. Component Composition and Functions

[0072] Base structure 1

[0073] Base plate 11: The main supporting body, with grooves 12 on both sides for guiding the cutter.

[0074] Mounting bracket 13: Fixes the vibrator; the lower through cavity allows the tie rod to pass through.

[0075] Vertical bar 14, handrail 15: operating handle

[0076] Cutting structure 2

[0077] Cutting blade 21 (2 pieces): 5mm steel plate, lower blade 211

[0078] Locking block 22: Sliding engagement with the base plate via right-angle groove 23 and locking strip 24.

[0079] Tensioning unit: lever 261 + nut 262, used to fix the cutter position.

[0080] 3-Plate Vibrator

[0081] Model: B-0.75 type attached vibratory compactor

[0082] Excitation frequency: 2800 times / minute

[0083] IV. Installation and Debugging

[0084] Cutter installation steps:

[0085] The two cutting blades 21 are connected via positioning pins 212 and positioning holes 213.

[0086] The locking strip 24 of the locking block 22 is embedded in the groove 12 of the base plate.

[0087] Insert the tie rod 261 and pre-tighten both sides with nuts 262.

[0088] After adjusting the cutter to the desired position, tighten the lock nut.

[0089] Vibrator installation:

[0090] Secure the vibrator 3 to the top of the mounting base 13 using M10 bolts.

[0091] Connect the power cord (grounding protection required).

[0092] V. Operating Instructions

[0093] Seam cutting operation:

[0094] After powering on, hold the operating lever 15 and move the equipment to the cutting position.

[0095] Slowly press down to allow the cutter 21 to cut into the concrete.

[0096] Position adjustment:

[0097] Loosen nut 262, slide the cutter close to the wall, and then tighten it again.

[0098] Vibration mode:

[0099] After removing the cutting structure, it can be used as a regular plate vibrator.

[0100] VI. Precautions

[0101] Pre-use check:

[0102] Confirm that the cutter is securely installed and not loose.

[0103] The power cord is well insulated and reliably grounded.

[0104] Safety Warning:

[0105] Wear insulating gloves during operation

[0106] Do not touch the cutting blade while the equipment is running.

[0107] Maintenance and upkeep:

[0108] Clean the cutter and apply rust-preventive oil after each use.

[0109] Regularly check the tightness of the bolts.

[0110] Replenish the vibrator with grease every 50 hours of operation.

[0111] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0112] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0113] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0114] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0115] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0116] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vibratory joint cutter for roller-compacted concrete, comprising a plate vibrator (3), characterized in that: It also includes, The base structure (1) is on top of the plate vibrator (3). The cutting structure (2) is mounted on the base structure (1) and the position of the cutting structure (2) can be adjusted along the width direction of the base structure (1).

2. The vibratory joint cutter for roller-compacted concrete according to claim 1, characterized in that: The base structure (1) includes a base plate (11), which is rectangular. Grooves (12) are machined in two width directions of the base plate (11). A mounting seat (13) is fixed on the top of the base plate (11). The lower part of the mounting seat (13) is a through cavity. The flat vibrator (3) is installed on the top of the mounting seat (13). The cutter structure (2) slides and adjusts along the groove (12). A vertical rod (14) is fixed on the top of the mounting seat (13). Two vertical rods (14) are arranged in parallel. A hand handle (15) is installed between the tops of the two vertical rods (14).

3. The vibratory joint cutter for roller-compacted concrete according to claim 2, characterized in that: The cutting structure (2) includes two interlocking cutting plates (21). A locking block (22) is provided at the top outer end of each cutting plate (21). The locking block (22) has a right-angle groove (23) that fits the base plate (11). A locking strip (24) is machined on the vertical surface of the right-angle groove (23). The locking strip (24) cooperates with the groove (12) and can slide along the groove (12). A locking strip is provided on the side of the locking block (22). There is a through mounting hole (25), and a tensioning unit is installed between the two clamping blocks (22). The tensioning unit passes through the mounting hole (25), and the tensioning unit (26) passes through the through cavity. After the clamping blocks (22) on both sides are installed, the upper end face of the cutter plate (21) contacts the bottom surface of the base plate (11), so that the vibration force generated by the plate vibrator (3) is transmitted to the cutter plate (21) through the base plate (11).

4. The vibratory joint cutter for roller-compacted concrete according to claim 3, characterized in that: The lower end of the cutting plate (21) has a blade (211).

5. The vibratory joint cutter for roller-compacted concrete according to claim 3, characterized in that: A positioning post (212) is provided at the splicing surface of one of the cutting blades (21), and a positioning hole (213) for inserting the positioning post (212) is provided at the splicing surface of the other cutting blade (21).

6. The vibratory joint cutter for roller-compacted concrete according to claim 3, characterized in that: The tensioning unit includes a pull rod (261) and nuts (262) that fit at both ends of the pull rod (261). The two ends of the pull rod (261) pass through mounting holes (25) on both sides respectively. After the pull rod (261) passes through the mounting holes (25), the nuts (262) are fitted. After the nuts (262) are locked, they press down the locking block (22).

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