Joint cutting device for building construction

Abstract

The utility model relates to the technical field of building construction, and discloses a joint cutting device for building construction, which comprises a vehicle plate, a linear sliding table, a moving plate, a hollow shaft, a rotating arm, a first spline shaft, a first spline sleeve, an electric push rod, a rotating shaft and a cutting blade. During use, after the rotating shafts on the two sides are driven by external force to rotate, the cutting blades on the two sides can be driven to rotate. Then the electric push rod is controlled to work, the rotating arms on the two sides can rotate around the hollow shafts on the two sides in a reciprocating mode along with stretching or retracting of the moving end of the electric push rod, and therefore the rotating shafts on the two sides are driven to descend or ascend. And finally, the cutting blades on the two sides are driven to descend or ascend so as to cut the ground or move out of the ground. And a strip area facilitating impact crushing can be formed in one cutting stroke, so that construction is facilitated. Besides, the linear sliding tables on the two sides are controlled to work, the movable plates on the two sides can be driven to move, and then the distance between the hollow shafts on the two sides is changed. And finally, the distance between the cutting blades on the two sides is changed, so that strip areas with different widths are cut.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a cutting device for building construction. Background Technology

[0002] A cutting device for building construction is disclosed in related technology (Announcement No.: CN219583273U), including a base, a water tank, an engine, a clutch wheel, a blade, a handle, a sleeve, a first push rod, and a second push rod. The water tank and engine are both mounted on the upper side of the base, and the clutch wheel is mounted on the lower side of the base. The handle is fixedly mounted on the water tank, and the blade is mounted on the output shaft of the engine. A dustproof baffle is fixedly installed on the outer side of the blade, and the water tank communicates with the dustproof baffle. The sleeve has a first end and a second end, with a fixing structure provided on the first end. The first push rod is slidably mounted on the first end, and a return spring is installed between the first push rod and the first end. The second push rod is slidably mounted on the second end, and the length of the second push rod is adapted to the diameter of the blade, with an angle greater than 45° between the second push rod and the horizontal ground.

[0003] In the process of implementing the technical solution disclosed herein, at least the following problems were found in the related technologies:

[0004] This construction cutting device, through its design of a sleeve, a first push rod, and a second push rod, allows workers to easily observe the cutting depth of the blade, thus enabling the creation of cracks at a specified depth. However, since it cuts the road surface using only a single blade, a single cutting stroke cannot create a strip area suitable for impact breaking, necessitating further cutting.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. This summary is not a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as an introduction to the detailed explanations that follow.

[0007] This disclosure provides a cutting device for building construction to solve the problems mentioned in the background art.

[0008] In some technical solutions, the cutting device for building construction includes: a platform; linear slides, installed on the top surface of the platform along its width direction and located on both sides of the platform; movable plates, respectively installed on the movable ends of the linear slides on both sides; hollow shafts, rotatably installed on the movable plates on both sides along the width direction of the platform, with the axes of the hollow shafts on both sides coinciding; rotating arms, respectively installed on the outer walls of the hollow shafts on both sides; and first splined shafts, respectively installed along the width direction of the platform. At one end of each of the two rotating arms, the axes of the two first splined shafts coincide; a first splined sleeve is fitted onto the two first splined shafts; an electric push rod is rotatably mounted between the outer wall of the first splined sleeve and the top surface of the vehicle plate; a rotating shaft is rotatably mounted at the other end of each of the two rotating arms along the width direction of the vehicle plate, and the axes of the two rotating shafts coincide; a cutting blade is mounted on each of the two rotating shafts; wherein, the two rotating shafts can be controlled to rotate, so as to drive the two cutting blades to rotate.

[0009] Optionally, it further includes: a second spline sleeve, rotatably mounted on the top surface of the vehicle panel along the width direction of the panel and located on both sides of the panel, the second spline sleeves on both sides being coaxially distributed with the hollow shafts on both sides, and the second spline sleeves on both sides being located between the hollow shafts on both sides; a first synchronous pulley, respectively mounted on the outer wall of the second spline sleeves on both sides; a second synchronous pulley, respectively mounted on the shafts on both sides; a synchronous toothed belt, respectively fitted between the first and second synchronous pulleys on the same side; and a second spline shaft, respectively passing through the second spline sleeve and the hollow shaft on the same side; wherein the second spline shafts on both sides are controllably rotatable to drive the shafts on both sides to rotate.

[0010] Optionally, it further includes: a reducer installed on the top surface of the vehicle body, the reducer including one input end and two output ends; a first coupling installed between the two input ends of the reducer and the two second splined shafts on both sides; wherein the input end of the reducer can be controlled to rotate to drive the two second splined shafts to rotate synchronously.

[0011] Optionally, it further includes: a motor mounted on the top surface of the vehicle body; and a second coupling mounted between the rotating end of the motor and the input end of the reducer.

[0012] Optionally, it further includes: a first seated bearing, which is respectively fitted onto the second splined sleeves on both sides and respectively mounted on the movable plates on both sides.

[0013] Optionally, it also includes: a second bearing mounted on each of the two second splined shafts, and both are mounted on the top surface of the vehicle body.

[0014] Optionally, it also includes: a third bearing mounted on each of the hollow shafts on both sides and mounted on the movable plates on both sides.

[0015] Optionally, it further includes: bearing housings, which are respectively installed on the two rotating arms and respectively sleeved on the two rotating shafts; bearings, which are respectively installed between the two bearing housings and the two rotating shafts.

[0016] Optionally, it also includes: wheels, evenly mounted on the bottom surface of the vehicle platform, all for contact with the ground; and a handrail, mounted on the bottom surface of the vehicle platform for gripping.

[0017] The cutting device for building construction provided by this disclosure can achieve the following technical effects:

[0018] This disclosure provides a cutting device for building construction, comprising a platform, a linear slide, a movable plate, a hollow shaft, a rotating arm, a first splined shaft, a first splined sleeve, an electric push rod, a rotating shaft, and a cutting blade. The linear slide is installed on the top surface of the platform along its width and is located on both sides of the platform. Both linear slides provide driving force to achieve linear movement. The movable plates are respectively installed at the movable ends of the two linear slides and move along the width of the platform under the drive of the two linear slides. The hollow shaft is rotatably installed on the two movable plates along the width of the platform, with the axes of the two hollow shafts coinciding, and can rotate relative to the two rotating arms. The rotating arms are respectively installed on the outer walls of the two hollow shafts and move synchronously with the two hollow shafts. The first splined shaft is installed at one end of each of the two rotating arms along the width of the platform, with the axes of the two first splined shafts coinciding, and both are used to support the sliding first splined sleeve. A first spline sleeve is fitted onto two first spline shafts, both of which can slide relative to the first spline sleeve. An electric actuator is rotatably mounted between the outer wall of the first spline sleeve and the top surface of the vehicle body, and can rotate relative to both the first spline sleeve and the vehicle body to provide driving force. Rotary shafts are rotatably mounted at the other end of two rotating arms along the width direction of the vehicle body, with the axes of the two rotating shafts coinciding, allowing them to rotate relative to the two rotating arms. Cutting blades are mounted on the two rotating shafts and rotate under their respective drives. The rotation of the two rotating shafts can be controlled to drive the rotation of the two cutting blades.

[0019] In operation, the two rotating shafts are driven by external force to rotate, which in turn drives the two cutting blades to rotate. Then, the electric push rods are controlled to operate; as the moving ends of the electric push rods extend or retract, the two rotating arms reciprocate around the two hollow shafts, causing the two rotating shafts to rise or fall. Ultimately, this causes the two cutting blades to rise or fall, cutting the ground or removing it from the ground. One cutting stroke can create a strip area that is easy to impact and break, thus facilitating construction. Furthermore, controlling the linear slides on both sides moves the two moving plates, thereby changing the distance between the two hollow shafts. Since the first spline shafts on both sides can slide relative to the spline sleeves, the distance between the two rotating arms changes accordingly. Ultimately, this changes the distance between the two cutting blades, thus cutting strip areas of different widths.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a schematic diagram of the structure of a cutting device for building construction provided in an embodiment of this disclosure;

[0023] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 yes Figure 1 Enlarged structural diagram at point B;

[0025] Figure 4 yes Figure 1 Enlarged structural diagram at point C;

[0026] Figure 5 yes Figure 1 A magnified structural diagram at point D.

[0027] Figure label:

[0028] 1. Car body; 2. Linear slide; 3. Moving plate; 4. Hollow shaft; 5. Rotary arm; 6. First splined shaft; 7. First splined sleeve; 8. Electric push rod; 9. Rotary shaft; 10. Cutting blade; 11. Second splined sleeve; 12. Synchronous toothed belt; 13. Second splined shaft; 14. Reducer; 15. Motor; 16. First bearing seat; 17. Second bearing seat; 18. Third bearing seat; 19. Bearing housing. Detailed Implementation

[0029] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0030] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure 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 for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0031] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0032] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0037] Combination Figures 1 to 5 As shown, this embodiment of the present disclosure provides a cutting device for building construction, including a platform 1, a linear slide 2, a movable plate 3, a hollow shaft 4, a rotating arm 5, a first spline shaft 6, a first spline sleeve 7, an electric push rod 8, a rotating shaft 9, and a cutting blade 10. The linear slide 2 is installed on the top surface of the platform 1 along its width direction and is located on both sides of the platform 1. Both linear slides 2 provide driving force to achieve linear movement. The movable plates 3 are respectively installed on the movable ends of the two linear slides 2 and move along the width direction of the platform 1 under the drive of the two linear slides 2. The hollow shafts 4 are rotatably installed on the two movable plates 3 along the width direction of the platform 1, with the axes of the two hollow shafts 4 coinciding and each capable of rotating along its axis. The rotating arms 5 are respectively installed on the outer walls of the two hollow shafts 4 and move synchronously with the two hollow shafts 4. The first spline shaft 6 is mounted on one end of each of the two rotating arms 5 along the width direction of the plate 1. The axes of the two first spline shafts 6 coincide, and both are used to support the mounting of the slidable first spline sleeve 7. The first spline sleeve 7 is fitted onto the two first spline shafts 6, and both first spline shafts 6 can slide relative to the first spline sleeve 7. The electric push rod 8 is rotatably mounted between the outer wall of the first spline sleeve 7 and the top surface of the plate 1, and can rotate relative to the first spline sleeve 7 and the plate 1 respectively, to provide driving force. The rotating shaft 9 is rotatably mounted on the other end of each of the two rotating arms 5 along the width direction of the plate 1. The axes of the two rotating shafts 9 coincide, and they can rotate relative to the two rotating arms 5 respectively. The cutting blades 10 are mounted on the two rotating shafts 9 respectively and rotate under the drive of the two rotating shafts 9. The two rotating shafts 9 can be rotated in a controlled manner to drive the two cutting blades 10 to rotate.

[0038] This disclosure provides a cutting device for building construction. When the two rotating shafts 9 are driven by an external force to rotate, they can drive the two cutting blades 10 to rotate. Then, the electric push rod 8 is controlled to operate. As the moving end of the electric push rod 8 extends or retracts, the two rotating arms 5 can reciprocate around the two hollow shafts 4, thereby driving the two rotating shafts 9 to descend or rise. Ultimately, this drives the two cutting blades 10 to descend or rise, cutting the ground or removing them from the ground. One cutting stroke can create a strip area that is easy to impact and break, thus facilitating construction. Furthermore, controlling the two linear slides 2 can drive the two moving plates 3 to move, thereby changing the distance between the two hollow shafts 4. Since the two first spline shafts 6 can slide relative to the spline sleeve, the distance between the two rotating arms 5 will change accordingly. Ultimately, changing the distance between the two cutting blades 10 allows for the cutting of strip areas of different widths.

[0039] Optionally, combined Figures 1 to 4 As shown, the system also includes a second spline sleeve 11, a first synchronous pulley, a second synchronous pulley, a synchronous toothed belt 12, and a second spline shaft 13. The second spline sleeve 11 is rotatably mounted on the top surface of the vehicle plate 1 along its width direction and is located on both sides of the vehicle plate 1. Both sides of the second spline sleeve 11 can rotate along their axes. The two sides of the second spline sleeve 11 are coaxially distributed with the two sides of the hollow shaft 4, and are located between the two sides of the hollow shaft 4. The first synchronous pulleys are respectively mounted on the outer walls of the two sides of the second spline sleeve 11 and rotate under the drive of the two sides of the second spline sleeve 11. The second synchronous pulleys are respectively mounted on the two sides of the rotating shaft 9 and are used to drive the two sides of the rotating shaft 9 to rotate. The synchronous toothed belt 12 is respectively fitted between the first synchronous pulley and the second synchronous pulley on the same side and is used to transmit driving force. The second splined shaft 13 is respectively inserted through the second splined sleeve 11 and the hollow shaft 4 on the same side, and is used to transmit torque to the second splined sleeve 11 on the same side, and to allow the hollow shaft 4 on the same side to rotate relative to it. Among them, the second splined shafts 13 on both sides can be rotated in a controlled manner to drive the rotating shafts 9 on both sides to rotate.

[0040] In this embodiment, the controlled rotation of the two second splined shafts 13 drives the rotation of the two second splined sleeves 11, which in turn drives the rotation of the two first synchronous pulleys. The synchronous toothed belts 12 on both sides drive the rotation of the two second synchronous pulleys, which in turn drives the rotation of the two rotating shafts 9, ultimately achieving the function of rotating the two cutting blades 10. Furthermore, since the two second splined sleeves 11 can slide relative to the two second splined shafts 13, there is no interference when adjusting the spacing of the two cutting blades 10, thus ensuring the normal operation of the device.

[0041] Optionally, combined Figure 1 and Figure 3As shown, the system also includes a reducer 14 and a first coupling. The reducer 14 is mounted on the top surface of the vehicle body 1 and includes one input end and two output ends, used to reduce the rotational speed. The first coupling is respectively installed between the two input ends of the reducer 14 and the two second splined shafts 13 on both sides, used to transmit driving force. The input ends of the reducer 14 can be controlled to rotate, driving the two second splined shafts 13 to rotate synchronously.

[0042] In this embodiment, after the input end of the reducer 14 is driven to rotate by an external force, the two output ends of the reducer 14 can rotate synchronously. Through two couplings, the second spline shafts 13 on both sides can be driven to rotate synchronously, ultimately realizing the function of synchronous rotation of the cutting blades 10 on both sides, thereby enabling simultaneous cutting of the road surface at the same speed.

[0043] Optionally, combined Figure 1 It also includes a motor 15 and a second coupling. The motor 15 is mounted on the top surface of the vehicle plate 1 to provide driving force for rotational motion. The second coupling is installed between the rotating end of the motor 15 and the input end of the reducer 14 to transmit driving force.

[0044] In this embodiment, the control motor 15 operates, and through the second coupling, it can drive the input end of the reducer 14 to rotate, ultimately realizing the function of automatic synchronous rotation of the cutting blades 10 on both sides.

[0045] Optionally, combined Figures 1 to 3 As shown, it also includes a first mounted bearing 16. The first mounted bearing 16 is respectively fitted onto the second splined sleeves 11 on both sides and is respectively mounted on the moving plates 3 on both sides.

[0046] In this embodiment, a first bearing 16 with a mounting plate is further included, which is respectively fitted onto the second spline sleeves 11 on both sides and respectively mounted on the moving plates 3 on both sides. The first bearings 16 with mounting plates on both sides are used to enable the second spline sleeves 11 on both sides to rotate along their axes and to ensure the rotational accuracy of the second spline sleeves 11 on both sides.

[0047] Optionally, combined Figure 1 and Figure 2 As shown, it also includes a second seated bearing 17. The second seated bearing 17 is respectively fitted onto the second splined shafts 13 on both sides, and is mounted on the top surface of the car body 1.

[0048] In this embodiment, a second bearing 17 with mounting brackets is further included, which are respectively fitted onto the second spline shafts 13 on both sides and mounted on the top surface of the vehicle plate 1. The second bearings 17 with mounting brackets on both sides are used to enable the second spline shafts 13 on both sides to rotate along their axes and to ensure the rotational accuracy of the second spline shafts 13 on both sides.

[0049] Optionally, combined Figure 1 and Figure 3As shown, it also includes a third seated bearing 18. The third seated bearing 18 is respectively fitted onto the hollow shafts 4 on both sides and is respectively mounted on the movable plates 3 on both sides.

[0050] In this embodiment, a third bearing 18 is further included, which is respectively fitted onto the hollow shafts 4 on both sides and respectively mounted on the movable plates 3 on both sides. The third bearings 18 on both sides are used to enable the hollow shafts 4 on both sides to rotate along their axes and to ensure the rotational accuracy of the hollow shafts 4 on both sides.

[0051] Optionally, combined Figure 1 and Figure 4 As shown, it also includes bearing housings 19 and bearings. The bearing housings 19 are respectively installed on the two side rotating arms 5 and respectively sleeved on the two side rotating shafts 9. The bearings are respectively installed between the two side bearing housings 19 and the two side rotating shafts 9.

[0052] In this embodiment, bearing housings 19 are respectively installed on the two side rotating arms 5 to support and install the bearings on both sides, and to limit the movement of the bearings on both sides. The two side bearings are respectively used to support and install the two side rotating shafts 9, reducing the frictional force on the two side rotating shafts 9 and improving the rotational accuracy of the two side rotating shafts 9.

[0053] Optionally, combined Figure 1 As shown, it also includes wheels and a handrail. The wheels are evenly mounted on the bottom surface of the platform 1, all for contact with the ground. The handrail is mounted on the bottom surface of the platform 1 for gripping.

[0054] In this embodiment of the disclosure, wheels are used to contact the ground, thereby facilitating the movement of the entire device. A handrail is used for gripping, facilitating manual pushing of the entire device.

[0055] The foregoing description and accompanying drawings have fully illustrated embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A cutting device for building construction, characterized in that, include: Car body; A linear slide is installed on the top surface of the vehicle panel along the width direction of the vehicle panel and located on both sides of the vehicle panel; Movable plates are respectively installed on the movable ends of the linear slides on both sides; Hollow shafts are rotatably mounted on the two movable plates on both sides along the width direction of the vehicle plate, and the axes of the hollow shafts on both sides coincide with each other. The rotating arms are respectively installed on the outer walls of the hollow shafts on both sides; The first spline shaft is installed at one end of each of the two rotating arms along the width direction of the vehicle plate, and the axes of the two first spline shafts coincide with each other. The first spline sleeve is fitted onto the first spline shafts on both sides; An electric push rod is rotatably mounted between the outer wall of the first splined sleeve and the top surface of the vehicle plate; A rotating shaft is rotatably mounted on the other end of the rotating arm on both sides along the width direction of the vehicle plate, and the axes of the rotating shafts on both sides coincide with each other. Cutting blades are respectively installed on the two rotating shafts on both sides; The rotating shafts on both sides can be controlled to rotate, thereby driving the cutting blades on both sides to rotate.

2. The cutting device for building construction according to claim 1, characterized in that, Also includes: The second spline sleeve is rotatably mounted on the top surface of the vehicle panel along the width direction of the vehicle panel and located on both sides of the vehicle panel. The second spline sleeves on both sides are coaxially distributed with the hollow shafts on both sides and are located between the hollow shafts on both sides. The first synchronous pulleys are respectively installed on the outer walls of the second splined sleeves on both sides; The second synchronous pulley is installed on both sides of the rotating shaft; Synchronous toothed belts are respectively fitted between the first synchronous pulley and the second synchronous pulley on the same side; The second spline shaft is respectively inserted through the second spline sleeve and the hollow shaft on the same side; The second spline shafts on both sides can be rotated in a controlled manner to drive the rotating shafts on both sides to rotate.

3. A cutting device for building construction according to claim 2, characterized in that, Also includes: A speed reducer is installed on the top surface of the vehicle body, and the speed reducer includes one input terminal and two output terminals; The first coupling is installed between the two input ends of the reducer and the second splined shafts on both sides; The input end of the reducer can be rotated in a controlled manner to drive the two second splined shafts to rotate synchronously.

4. A cutting device for building construction according to claim 3, characterized in that, Also includes: The motor is mounted on the top surface of the vehicle body; The second coupling is installed between the rotating end of the motor and the input end of the reducer.

5. A cutting device for building construction according to claim 2, characterized in that, Also includes: The first bearing with a mounting seat is respectively fitted onto the second splined sleeve on both sides and is respectively mounted on the movable plates on both sides.

6. A cutting device for building construction according to claim 2, characterized in that, Also includes: The second bearing with a mounting bracket is respectively fitted onto the second splined shaft on both sides, and is mounted on the top surface of the vehicle body.

7. A cutting device for building construction according to any one of claims 1 to 6, characterized in that, Also includes: The third bearing with a mounting bracket is respectively fitted onto the hollow shafts on both sides and respectively mounted on the movable plates on both sides.

8. A cutting device for building construction according to any one of claims 1 to 6, characterized in that, Also includes: Bearing housings are respectively installed on the two sides of the rotating arms and respectively sleeved on the two sides of the rotating shaft; Bearings are respectively installed between the bearing housings on both sides and the rotating shafts on both sides.

9. A cutting device for building construction according to any one of claims 1 to 6, characterized in that, Also includes: The wheels are evenly installed on the bottom surface of the vehicle platform and are all used to contact the ground. A hand-held grip is installed on the bottom surface of the vehicle platform.

Images